similarities to specimens they identified as M. crassus. Both
perforatus and their crass us however are widely different
from the type-species, Bathytroctes rostratus Gunther,
1878, which is most like species of Holtbyrnia and should be
included in that genus. Work in progress indicates that M.
perforatus is properly referred to the genus Pellisolus Parr,
1951 .
65.6 Pellisolus perforatus
(Sazonov & Trunov, 1978)
Mentodus perforatus Sazonov & Trunov, 1978: 93 , Fig. 4 (off west coast
of South Africa) .
D 18-21; A 16-18; P 13-18; V 8-9; GR (7-8)+(19-21) = 27- 28. Depth
4.3-4.6, head 2.7-3.0. Body moderately compressed; snout longer than
eye ; white tissue around eye .
Attains 23 cm. Tropical/subtropical eastern Atlantic;
southern hemisphere (5°-33°S) with 1 record in North
Atlantic. Bathypelagic.
65.6 Pellisolus "Mentodus " perforatus: 23 em SL.
Genus Persparsia Parr, 1951
Monotypic.
65.7 Persparsia kopua
(Phillips, 1942)
Bathytroctes kopua Phillips, 1942: 49, Fig. 1 (Cook Strait, New Zealand). Persparsia kopua: Parr, 1960: 48* ; Hulley , 1972: 203*; 1972: 237 ;
Sazonov & Trunov, 1978: 87 .
D 19-22; A 13-14; P 19-21; V 8-9 ; GR (10-12)+(26-30) = 38-40.
Attains 14 cm. Eastern Atlantic to New Zealand, mostly
between 30° and 50
0
S. Mesopelagic.
65.7 Persparsia kopua: 7 em (after Hulley, 1972).
66: LEPTOCHILICHTHYIDAE (LEPTOCHILICHTHYIDS)
Genus Sagamichthys Parr, 1953
Three species, 1? in our area.
65.8 ? Sagamichthys schnakenbecki
(Krefft, 1953)
Searsia schnakenbecki Krefft, 1953: 259, Fig. I (Iceland - Faroe Ridge) .
(?) Sagamichthys schnakenbecki: Karrer, 1975: 67; Sazonov & Trunov,
1978: 87.
D 16; A 15; P 18; V 9; GR 5+ 17 (from Sazonov & Trunov, 1978).
Except for reverse-imbricated scales, Sazonov and Trunov (1978) failed
to mention any other diagnostic character identifying Sagamichthys. The
low GR and V ray counts indicate that their specimen (from 23°S, 13°E) is
not schnakenbecki; GR 27-32 and V rays usually 10 in S. schnakenbecki
from North Atlantic. Karrer (1975) reported S. schnakenbecki from
18°45'S, l1~5'E , at 380 m but gave no description.
65.8 Sagamichthys schnakenbecki: 9.5 em (after Quero, 1970).
Family No. 66: LEPTOCHILICHTHYIDAE
by D.F. Markle
Leptochilichthyids
Leptochilichthiede
Body compressed, oblong; with moderately large cycloid
scales; head naked. Maxilla a deep thin bone without teeth;
premaxilla toothless; a conspicuous notch between premaxillae. Vomer and palatines with teeth. Tongue absent.
No shoulder organ. Dorsal fin origin posterior to middle of
body and in front of anal fin origin. No adipose fin. Pectoral
fins low on body; pelvic fins abdominal.
A rare group comprising one genus with two species of
moderate-sized fishes found between about 800 and
3 100 m. Leptochilichthyids are close relatives of alepocephaJids and platytroctids; they are recognised as a separate family on the basis of a unique complex of feedingrelated specialisations.
Genus Leptochilichthys Garman, 1899
Two species; 1 in our area. L. agassizii Garman, 1899,
with D 11-15 and A 11-13, is known only from the eastern
North Atlantic and eastern Pacific in 2 000 and 3100 m.
225
perforatus and their crass us however are widely different
from the type-species, Bathytroctes rostratus Gunther,
1878, which is most like species of Holtbyrnia and should be
included in that genus. Work in progress indicates that M.
perforatus is properly referred to the genus Pellisolus Parr,
1951 .
65.6 Pellisolus perforatus
(Sazonov & Trunov, 1978)
Mentodus perforatus Sazonov & Trunov, 1978: 93 , Fig. 4 (off west coast
of South Africa) .
D 18-21; A 16-18; P 13-18; V 8-9; GR (7-8)+(19-21) = 27- 28. Depth
4.3-4.6, head 2.7-3.0. Body moderately compressed; snout longer than
eye ; white tissue around eye .
Attains 23 cm. Tropical/subtropical eastern Atlantic;
southern hemisphere (5°-33°S) with 1 record in North
Atlantic. Bathypelagic.
65.6 Pellisolus "Mentodus " perforatus: 23 em SL.
Genus Persparsia Parr, 1951
Monotypic.
65.7 Persparsia kopua
(Phillips, 1942)
Bathytroctes kopua Phillips, 1942: 49, Fig. 1 (Cook Strait, New Zealand). Persparsia kopua: Parr, 1960: 48* ; Hulley , 1972: 203*; 1972: 237 ;
Sazonov & Trunov, 1978: 87 .
D 19-22; A 13-14; P 19-21; V 8-9 ; GR (10-12)+(26-30) = 38-40.
Attains 14 cm. Eastern Atlantic to New Zealand, mostly
between 30° and 50
0
S. Mesopelagic.
65.7 Persparsia kopua: 7 em (after Hulley, 1972).
66: LEPTOCHILICHTHYIDAE (LEPTOCHILICHTHYIDS)
Genus Sagamichthys Parr, 1953
Three species, 1? in our area.
65.8 ? Sagamichthys schnakenbecki
(Krefft, 1953)
Searsia schnakenbecki Krefft, 1953: 259, Fig. I (Iceland - Faroe Ridge) .
(?) Sagamichthys schnakenbecki: Karrer, 1975: 67; Sazonov & Trunov,
1978: 87.
D 16; A 15; P 18; V 9; GR 5+ 17 (from Sazonov & Trunov, 1978).
Except for reverse-imbricated scales, Sazonov and Trunov (1978) failed
to mention any other diagnostic character identifying Sagamichthys. The
low GR and V ray counts indicate that their specimen (from 23°S, 13°E) is
not schnakenbecki; GR 27-32 and V rays usually 10 in S. schnakenbecki
from North Atlantic. Karrer (1975) reported S. schnakenbecki from
18°45'S, l1~5'E , at 380 m but gave no description.
65.8 Sagamichthys schnakenbecki: 9.5 em (after Quero, 1970).
Family No. 66: LEPTOCHILICHTHYIDAE
by D.F. Markle
Leptochilichthyids
Leptochilichthiede
Body compressed, oblong; with moderately large cycloid
scales; head naked. Maxilla a deep thin bone without teeth;
premaxilla toothless; a conspicuous notch between premaxillae. Vomer and palatines with teeth. Tongue absent.
No shoulder organ. Dorsal fin origin posterior to middle of
body and in front of anal fin origin. No adipose fin. Pectoral
fins low on body; pelvic fins abdominal.
A rare group comprising one genus with two species of
moderate-sized fishes found between about 800 and
3 100 m. Leptochilichthyids are close relatives of alepocephaJids and platytroctids; they are recognised as a separate family on the basis of a unique complex of feedingrelated specialisations.
Genus Leptochilichthys Garman, 1899
Two species; 1 in our area. L. agassizii Garman, 1899,
with D 11-15 and A 11-13, is known only from the eastern
North Atlantic and eastern Pacific in 2 000 and 3100 m.
225