150 S. STILLMAN BERRY. 



Genus Ancistroteuthis Gray, 1849. (No photogenic species known.) 



1 species. 



Genus Moroteuthis Verrill, 1881. (No photogenic species known.) 



3 species. 

 Family LYCOTEUTHID^E. 



Genus LYCOTEUTHIS Pfeffer, 1900. (Photogenic organs on eyes, in stalks of 

 tentacles, and in pallial chamber.) 



2 species: diadema, jattai; possibly identical. 



Genus NEMATOLAMPAS Berry, 1913. (Photogenic organs on eyes, in arms, in 



stalks of tentacles, in pallial chamber, and at posterior tip of body.) 

 i species: regalis. 

 Family LAMPADIOTEUTHID^:. 



Genus LAMPADIOTEUTHIS Berry, 1916. (Photogenic organs on eyes, in stalks 



of tentacles, and in pallial chamber.) 

 I species: megaleia. 

 Family ENOPLOTEUTHID^. 



Genus ENOPLOTEUTHIS d'Orbigny, 1844. (Photogenic organs on eyes and in 

 the integument of mantle, funnel, head, and arms, but almost entirely 

 confined to ventral aspect.) 



3 species: leptura, chunii, galaxias. 



Genus ABRALIA Gray, 1849. (Photogenic organs on eyes and in the integu- 

 ment of arms, head, funnel and mantle, but almost entirely confined to 

 ventral aspect.) 

 7 species: andamanica, armata, astrolineata, astrosticta, steindachneri, 



trigonura, veranyi. 



Genus ABRALIOPSIS Joubin, 1896. (Photogenic organs on eyes, at tips of 

 ventral arms, and in the integument of arms, head, funnel, and mantle, 

 but almost entirely confined to ventral aspect.) 

 5 + species: affinis, hoylei, lineata, morisii, owenii, pfefferi. 

 Genus WATASENIA Ishikawa, 1914. (Photogenic organs as in Abraliopsis.) 



i species: scintillans. 



Genus ENOPLOION Pfeffer, 1912. (Larval form; photogenic organs on ten- 

 tacle stalks and ventral integument of ventral arms, head, funnel, and 

 mantle.) 



i species: eustictum. 

 Genus ASTHENOTEUTHION Pfeffer, 1912. (Larval form; photogenic organs on 



eyes.) 



I species: planctonicum. 



Genus ANCISTROCHEIRUS Gray, 1849. (Photogenic organs in ventral integu- 

 ment of mantle.) 

 i species: lesueurii. 

 Genus THELIDIOTEUTHIS Pfeffer, 1900. (Photogenic organs on tentacle stalks 



and ventral integument of head and mantle.) 

 i recognized species: alessandrinii. 



Genus PTERYGIOTEUTHIS H. Fischer, 1896. (Photogenic organs on eyes, in 

 tentacle stalks, and in pallial chamber.) 



4 species: gemmata, giardi, hoylei, microlampas. 



Genus PYROTEUTHIS Hoyle, 1904. (Photogenic organs on eyes, in tentacle 



stalks, and in pallial chamber.) 

 3 species: aurantiaca, margaritifera, oceanica, + several named larval forms. 



