64: ALEPOCEPHALIDAE (SLICKHEADS)
KEY TO SPECIES
la No photophores; LL 43-48 ......................................... R. attrita
Ib Nodular photophores present, most abundant on
ventral aspect of body; LL 50-70 ........................................... 2
2a LL 50-56; A 20-22 ............................................. R. maderensis
2b LL about 70; A 16-19 .............. ......................... R. squamilatera
64.13 Rouleina attrita
(Vaillant, 1888)
Bathytroctes attritus Vaillant, 1888: 158, PI. 12, Fig. 2 (37°35'N,
29°26'W). Rouleina attrita: Markle, 1978: 79*; Sazonov & Ivanov , 1980:
66*; Markle & Sazonov, 1984: 249*.
D 18-21; A 18-21; P 6-7; V 6-7; LL 43-48; GR (8-9)+(15-20). No photophores; 43-46 vertebrae.
Attains 42 em SL. Off Madagascar and Mozambique;
widely distributed in Atlantic, Indian and Pacific oceans,
primarily between 1 400 and 2 100 m. Benthopelagic.
64.13 Rouleinaattrita: 31 em SL.
64.14 Rouleina maderensis
Maul,1948
Rouleina maderensis Maul, 1948: 7, Fig. 1 (Madeira); Markle, 1978:
79*; Sazonov & Ivanov, 1980: 64*; Markle & Quero, 1984: 249*.
D 20-22; A 20-22; P 5-7; V 5-6; LL 50-56; GR (7-9)+(15-21). Photophores present; 47-50 vertebrae.
Attains 32 em SL. Three specimens from off South
Africa; known from North Atlantic, Mascarene Plateau
and tropical Pacific at depths of 595 - 1 450 m. Benthopelagic.
64.14 Rouleina·maderensis: 22 em SL.
64.15 Rouleina squamilatera
(Alcock, 1898)
Xenodermichthys squamilaterus Alcock, 1898: 148 (off Andaman Ids.).
Rouleina squamilatera: Sazonov, 1978: 761 *; Sazonov & Ivanov, 1980:
57*
222
D 18-21; A 16-19; P 7-8; V 6-7; LL about 70; GR (7-10)+(18-20).
Photophores present; about 50 vertebrae.
Attains 38 cm SL. Twelve specimens from Madagascar
Ridge; also known from Okhotsk Sea, Great Australian
Bight, southwest Pacific and Indian Ocean in 790 - 1000 m.
Benthopelagic.
64.15 Rouleina squamilatera: 75.5 em SL (after Sazonov, 1978).
Genus Talismania Goode & Bean, 1896
Seven species; 2 in our area.
64.16 Talismania kotlyari
Sazonov & Ivanov, 1980
Talismania kotlyari Sazonov & Ivanov, 1980: 49, Fig. 13 (03°46'N
95°E).
D 22-24; A 23-25; P 10-13; V 7-8; GR (6-7)+(16-17). Head length
usually less than 34 % SL; 68-80 transverse scale rows above LL.
Attains 23 em SL. One specimen from 24°55'S, 35°40'E in
980 - 1 050 m; only known from Indian Ocean. Benthopelagic.
64.16 Talismania kotlyari: adult? (after Sazonov & Ivanov, 1980).
64.17 Talismania longifilis
(Brauer, 1902)
Bathytroctes longifilis Brauer, 1902: 277 (13°02'08"N, 46°41'06"E).
Talismania longifilis Parr, 1952: 269; Sazonov & Ivanov, 1980: 46*.
D 20-25; A 19-25; P 11-14; V 7-9; GR (6-9)+(13-17). Head length
usually more than 34% SL; 97-137 transverse scale rows above LL.
Attains 46 em SL. Two specimens from Mozambique
Ridge; eastern Atlantic, Indian Ocean and western tropical
Pacific. Benthopelagic.
~ . ~~
/ 1\ . \- )
64.17 Talismania longifilis: adult? (after Sazonov & Ivanov, 1980).
KEY TO SPECIES
la No photophores; LL 43-48 ......................................... R. attrita
Ib Nodular photophores present, most abundant on
ventral aspect of body; LL 50-70 ........................................... 2
2a LL 50-56; A 20-22 ............................................. R. maderensis
2b LL about 70; A 16-19 .............. ......................... R. squamilatera
64.13 Rouleina attrita
(Vaillant, 1888)
Bathytroctes attritus Vaillant, 1888: 158, PI. 12, Fig. 2 (37°35'N,
29°26'W). Rouleina attrita: Markle, 1978: 79*; Sazonov & Ivanov , 1980:
66*; Markle & Sazonov, 1984: 249*.
D 18-21; A 18-21; P 6-7; V 6-7; LL 43-48; GR (8-9)+(15-20). No photophores; 43-46 vertebrae.
Attains 42 em SL. Off Madagascar and Mozambique;
widely distributed in Atlantic, Indian and Pacific oceans,
primarily between 1 400 and 2 100 m. Benthopelagic.
64.13 Rouleinaattrita: 31 em SL.
64.14 Rouleina maderensis
Maul,1948
Rouleina maderensis Maul, 1948: 7, Fig. 1 (Madeira); Markle, 1978:
79*; Sazonov & Ivanov, 1980: 64*; Markle & Quero, 1984: 249*.
D 20-22; A 20-22; P 5-7; V 5-6; LL 50-56; GR (7-9)+(15-21). Photophores present; 47-50 vertebrae.
Attains 32 em SL. Three specimens from off South
Africa; known from North Atlantic, Mascarene Plateau
and tropical Pacific at depths of 595 - 1 450 m. Benthopelagic.
64.14 Rouleina·maderensis: 22 em SL.
64.15 Rouleina squamilatera
(Alcock, 1898)
Xenodermichthys squamilaterus Alcock, 1898: 148 (off Andaman Ids.).
Rouleina squamilatera: Sazonov, 1978: 761 *; Sazonov & Ivanov, 1980:
57*
222
D 18-21; A 16-19; P 7-8; V 6-7; LL about 70; GR (7-10)+(18-20).
Photophores present; about 50 vertebrae.
Attains 38 cm SL. Twelve specimens from Madagascar
Ridge; also known from Okhotsk Sea, Great Australian
Bight, southwest Pacific and Indian Ocean in 790 - 1000 m.
Benthopelagic.
64.15 Rouleina squamilatera: 75.5 em SL (after Sazonov, 1978).
Genus Talismania Goode & Bean, 1896
Seven species; 2 in our area.
64.16 Talismania kotlyari
Sazonov & Ivanov, 1980
Talismania kotlyari Sazonov & Ivanov, 1980: 49, Fig. 13 (03°46'N
95°E).
D 22-24; A 23-25; P 10-13; V 7-8; GR (6-7)+(16-17). Head length
usually less than 34 % SL; 68-80 transverse scale rows above LL.
Attains 23 em SL. One specimen from 24°55'S, 35°40'E in
980 - 1 050 m; only known from Indian Ocean. Benthopelagic.
64.16 Talismania kotlyari: adult? (after Sazonov & Ivanov, 1980).
64.17 Talismania longifilis
(Brauer, 1902)
Bathytroctes longifilis Brauer, 1902: 277 (13°02'08"N, 46°41'06"E).
Talismania longifilis Parr, 1952: 269; Sazonov & Ivanov, 1980: 46*.
D 20-25; A 19-25; P 11-14; V 7-9; GR (6-9)+(13-17). Head length
usually more than 34% SL; 97-137 transverse scale rows above LL.
Attains 46 em SL. Two specimens from Mozambique
Ridge; eastern Atlantic, Indian Ocean and western tropical
Pacific. Benthopelagic.
~ . ~~
/ 1\ . \- )
64.17 Talismania longifilis: adult? (after Sazonov & Ivanov, 1980).