130 
behind and below eye, on opercle, between branchiostegal rays, 
in groups along isthmus, along ventral edge, between ventrals 
and anal, above and behind anal, above and behind pectorals. 
Spiny ridges on head and belly. A strong praeopercular spine. 
Gape of mouth vertical, rather small, bordered above by the 
slender intermaxillaries, which are followed by the posteriorly 
broadened maxillaries. Mandibles received within the upper 
jaw. Eye very large, snout very short. Origin of dorsal nearly 
midway in length of body, preceded by a short bifid spine. 
A low adipose fin present. Origin of anal at the beginning 
of last '/, of length. Pectorals low down, long; ventrals short. 
Caudal forked. Minute teeth in bands on intermaxillary and 
mandible, in a series on maxilla. Similar teeth on vomer. 
Gillopening wide, gillmembranes free {rom the isthmus, deli- 
cately connected. g—11 short branchiostegal rays. Pseudo- 
branchiae present. Gillrakers rather long. 
I. Polyipnus spinosus Gthr. 
Polyipnus spinosus Giinther, Challenger Rep. Deep-sea Fishes, 1887, p. 170. 
Polyipnus spinosus Alcock, Ann. Mag. Nat. Hist. (6). IV. 1889, p. 398. — Descr. 
Cat. Indian Deep Sea Fishes, 1899, p. 137. 
Polyipnus spinosus Brauer, Deutsche Tiefsee-Exp. Tiefseefische, 1906, p. 120. 
Polyipnus spinosus Max Weber, Siboga-Exp. Fische, 1913, p. 22. 
Fig. 47. Polyipnus spinosus Gthr. 
B. g9—11; D. 12—13; A. 15—17; P. 12—14; V. 5. 
Height 1'/,—1*/,, head 3, much higher than long; eye 2'/,. 
Vertical diameter of eye '/, or somewhat more of length of 
head. Snout very short, less than pupil. On dorsal part of 
