64.9 Herwigia kreffti
(Nielsen & Larsen, 1970)
Bathylaco kreffti Nielsen & Larsen, 1970: 35, Figs. 5-6 (WOl'S,
47°39'W). Herwigia kreffti: Nielsen, 1972: 32*; Sazonov & Ivanov, 1980:
18*; Markle & Quero, 1984: 243*.
D 15-18; A 13-15; P 16-18; V 7-8 plus a splint bone; GR (7-8)+(13-17);
pyloric caeca 9-10 .
Attains 40 cm SL. Continental slope off southeast Africa
and Mozambique in 1250 -1450 m; eastern Atlantic, Indian
and mid-Pacific oceans. Bathypelagic.
64.9 Herwigia kreffti: adult? (after Markle & Quero, 1984).
Genus Leptoderma Vaillant, 1886
About 5 species; 1 known from our area; several species
are poorly known and the genus is in need of revision.
64.10 Leptoderma macrops
Vaillant, 1886
Leptoderma macrops Vaillant , 1886: 1239 (off Morocco); Vaillant ,
1888: 166*; Karrer, 1973: 203; Markle & Quero, 1984: 244* .
D 57-67 ; A 78-85; P 7-9; V 5-6; GR (0-1)+(11-14). D and A confluent
with C.
Attains 24 cm SL. Known from 66 specimens collected at
"Galathea" Station 137, 20
0
04'S, 11°56'E, in 550 - 585 m;
widespread in North and South Atlantic in about 500 - 2 000
m. Benthopelagic.
64_10 Leptoderma macrops: 15 em SL.
Genus Mirognathus Parr, 1951
One species; M. normani Parr, 1951 is known only from 2
eastern North Atlantic localities and 1 western South
Atlantic locality at depths of 2 000 - 3 000 m. Bathypelagic.
Genus Narcetes Alcock, 1890
Three to 5 species; 2 in our area.
64: ALEPOCEPHALIDAE (SLICKHEADS)
64.11 Narcetes lIoydi
Fowler, 1934
Narcetes Iloydi Fowler, 1934: 253, Fig. 16 (east coast of Luzon, Philippines in 565 fms); Sazonov & Ivanov, 1980: 22* .
D 18-22; A 15-18; P 8-11; V 6-10; GR (5-6)+(14-17); pyloric caeca 8-17;
cephalic lateralis pores prominent ; interorbital distance 5.6-8.5% SL.
Attains 50 cm SL. Captured between 24°55'-30 0 11'S and
31°30'-35°45'E in 920 - 1 050 m; also from South China Sea,
Arabian Sea and Indian Ocean ridges. Benthopelagic.
64_11 Narcetes /loydi: adult? (after Sazonov & Ivanov, 1980).
64.12 Narcetes stomias
(Gilbert, 1890)
Bathytroctes stomias Gilbert, 1890: 53 (ca . 47°N 125°W) . Narcetes
stomias: Sazonov & Ivanov , 1980: 20* ; Markle & Quero, 1984: 246*.
D 18-20; A 14-17; P 9-11; V 8-9; GR (4-6)+(10-14); pyloric caeca 6-11;
cephalic lateralis pores not prominent; interorbital distance 4.1-5.7% SL.
Attains 53 cm SL. Widely distributed in Atlantic, Indian
and eastern Pacific oceans in 1 500 - 2 300 m, usually more
narrowly restricted between 1 800 and 2 100 m. Absence
from our area most likely due to insufficient sampling.
Benthopelagic.
~~--,::"-------c. . . , , . . . . . , .
..... :
64.12 Narcetes stomias: adult? (drawn after Sazonov & Ivanov, 1980).
Genus Photostylus Beebe, 1933
One species, P. pycnopterus Beebe, 1933; relatively rare
though circumglobal between about 65°N and 35°S at
depths of 1 000 - 2 000 m. Bathypelagic. Presently unknown
from our area.
Genus Rinoctes Parr, 1952
One species, R. nasutus (Koefoed, 1927), known only
from deep basins in North Atlantic; abyssobenthic.
Genus Rouleina Jordan, 1923
About 5 species; 3 in our area.
221
(Nielsen & Larsen, 1970)
Bathylaco kreffti Nielsen & Larsen, 1970: 35, Figs. 5-6 (WOl'S,
47°39'W). Herwigia kreffti: Nielsen, 1972: 32*; Sazonov & Ivanov, 1980:
18*; Markle & Quero, 1984: 243*.
D 15-18; A 13-15; P 16-18; V 7-8 plus a splint bone; GR (7-8)+(13-17);
pyloric caeca 9-10 .
Attains 40 cm SL. Continental slope off southeast Africa
and Mozambique in 1250 -1450 m; eastern Atlantic, Indian
and mid-Pacific oceans. Bathypelagic.
64.9 Herwigia kreffti: adult? (after Markle & Quero, 1984).
Genus Leptoderma Vaillant, 1886
About 5 species; 1 known from our area; several species
are poorly known and the genus is in need of revision.
64.10 Leptoderma macrops
Vaillant, 1886
Leptoderma macrops Vaillant , 1886: 1239 (off Morocco); Vaillant ,
1888: 166*; Karrer, 1973: 203; Markle & Quero, 1984: 244* .
D 57-67 ; A 78-85; P 7-9; V 5-6; GR (0-1)+(11-14). D and A confluent
with C.
Attains 24 cm SL. Known from 66 specimens collected at
"Galathea" Station 137, 20
0
04'S, 11°56'E, in 550 - 585 m;
widespread in North and South Atlantic in about 500 - 2 000
m. Benthopelagic.
64_10 Leptoderma macrops: 15 em SL.
Genus Mirognathus Parr, 1951
One species; M. normani Parr, 1951 is known only from 2
eastern North Atlantic localities and 1 western South
Atlantic locality at depths of 2 000 - 3 000 m. Bathypelagic.
Genus Narcetes Alcock, 1890
Three to 5 species; 2 in our area.
64: ALEPOCEPHALIDAE (SLICKHEADS)
64.11 Narcetes lIoydi
Fowler, 1934
Narcetes Iloydi Fowler, 1934: 253, Fig. 16 (east coast of Luzon, Philippines in 565 fms); Sazonov & Ivanov, 1980: 22* .
D 18-22; A 15-18; P 8-11; V 6-10; GR (5-6)+(14-17); pyloric caeca 8-17;
cephalic lateralis pores prominent ; interorbital distance 5.6-8.5% SL.
Attains 50 cm SL. Captured between 24°55'-30 0 11'S and
31°30'-35°45'E in 920 - 1 050 m; also from South China Sea,
Arabian Sea and Indian Ocean ridges. Benthopelagic.
64_11 Narcetes /loydi: adult? (after Sazonov & Ivanov, 1980).
64.12 Narcetes stomias
(Gilbert, 1890)
Bathytroctes stomias Gilbert, 1890: 53 (ca . 47°N 125°W) . Narcetes
stomias: Sazonov & Ivanov , 1980: 20* ; Markle & Quero, 1984: 246*.
D 18-20; A 14-17; P 9-11; V 8-9; GR (4-6)+(10-14); pyloric caeca 6-11;
cephalic lateralis pores not prominent; interorbital distance 4.1-5.7% SL.
Attains 53 cm SL. Widely distributed in Atlantic, Indian
and eastern Pacific oceans in 1 500 - 2 300 m, usually more
narrowly restricted between 1 800 and 2 100 m. Absence
from our area most likely due to insufficient sampling.
Benthopelagic.
~~--,::"-------c. . . , , . . . . . , .
..... :
64.12 Narcetes stomias: adult? (drawn after Sazonov & Ivanov, 1980).
Genus Photostylus Beebe, 1933
One species, P. pycnopterus Beebe, 1933; relatively rare
though circumglobal between about 65°N and 35°S at
depths of 1 000 - 2 000 m. Bathypelagic. Presently unknown
from our area.
Genus Rinoctes Parr, 1952
One species, R. nasutus (Koefoed, 1927), known only
from deep basins in North Atlantic; abyssobenthic.
Genus Rouleina Jordan, 1923
About 5 species; 3 in our area.
221