Family AULOPIDAE 
Body moderately to slenderly elongate, little com¬ 
pressed or subcylindrleal. Eyes lateral. Mouth slightly 
protractile, terminal, rather wide. Maxillary long, reaches 
hind eye edge or beyond. Vomerine teeth forms single trans¬ 
verse series. Branchiostegals long, curved, numerous. Mo 
air vessel. Vertebrae 52. Scales moderate or small. Some¬ 
times rows of luminous spots or photophores along belly. 
Dorsal premedian or median. Anal postmedian. Pectoral rather 
low. Ventrals widely separated, rays 9, inserted below or 
little behind pectorals. 
Although Regan has placed the Ateleopoidea as a suborder 
of the Iniomi, chiefly on certain osteological resemblences 
with Aulopus, especially its shoulder girdle, it does not 
appear to me closely related. Its peculiar physiognomy, even 
if only superficial, certainly recalls the jugular ventrals 
of the brotulids, macrurids, or such groups, Hacristium, 
which Regan also places as probably related to Aulopsis is 
arranged with the clupeoids near the Alepocephalldae by Jordan. 
Analysis of genera 
1 
a . Body moderately long; no photophores; dorsal 
premedian 
Aulopus. 
a^. Body very slender and elongate; 3 ventral 
rows of photophores each side; dorsal med- 
Scopelosaurus. 
ian. 
