1503 
1 T-> 
d . Notosudinae. Eyes moderate or well 
•- «»b i n , nmwmm t n —k «ii ip 
developed; fin rays not prolonged; 
dorsal median. Notosudis. 
2 _ 
d . Bathypterlnae. Eyes very small or 
entirely absent; outer caudal and 
lowest ventral fin rays sometimes 
excessively extended, 
e . Eyes amall, distinct; caudal and 
paired fins with extended mod¬ 
ified rays; vent nearly median, 
r . Pectoral Inserted very high on 
shoulder girdle, normal. 
Benthosaurus. 
p 
f . Pectoral with rays formed in 2 
distinctly separated groups on 
each side. Bathypterois. 
2 
e . Eyes vestigeal and covered by 
scales or entirely absent; fin 
rays not prolonged; vent pre¬ 
median. 
g\ Eyes vestigeal, covered by 
scales of normal size. 
Bathymicrops. 
