334 



3 ! / 2 3 3 / 4 , more than i'/ 2 times broader than long, its posterior 

 part convex, its dorsal profile sloping down in a straight line to 

 the rounded, flattened snout, the breadth of which is equal to that 

 of the head. The width of the mouth nearly i 1 ^ times in head. 



Fig. 144. Doiichthys novae-guineae M. Web. X 4 /5* 



Headshields with retiform rugae; the 

 borders of the keeled occipital process 

 are slightly convex, otherwise nearly 

 parallel. The length of the process is 

 twice the breadth at its base, its blunt 

 hindborder is emarginated and nearly 

 touches the anterior process of the narrow basal bone of the 

 dorsal spine. Median fontanel elongate, wider behind. Humeral 

 process very broad and short. Eye situated in the middle of 

 the head, more than I eyediameter behind corner of mouth, 

 9 x / 3 in head and about 6 times in the convexity of the inter- 

 orbital space. All the barbels extending to the anterior part 

 of the anal. Height of dorsal equal to length of head from 

 posterior nostril, the rather weak spine about as long as head 

 without snout, posteriorly serrated, anteriorly only a few teeth 

 near its top. Base of adipose fin shorter than dorsal, its 

 distance from dorsal at least thrice its length. Anal nearly 

 equal to head, its height more than head without snout. 

 Ventrals reaching to anal, shorter than postorbital part of head. 

 Pectorals longer than head without snout; their spine flattened 

 and posteriorly strongly serrated is shorter and considerably 

 shorter than dorsal spine. Caudal deeply forked, with pointed 

 lobes; about thrice as long as median rays. Least height of 

 caudal peduncle more than twice in its length. About 32 slender, 

 cylindrical gillrakers, much longer than branchial filaments, 



