102 



vent. Scales large, deciduous, excepting the lateral line, where 

 they are adherent and perforated; there are scales on the 

 cheeks and opercles. Gillrakers long and close set. Colours 

 in fresh state: head uniform deep black, body pinkish brown, 

 fins transparent grey. Length 266 mm. 



Habitat: Bali sea (1018 m.)! Arabian sea, off the Laca- 

 dives (1353 m.); Indian Ocean off Goa coast (1332 m.). 



2. Bathytroctes calcaratus M. Web. 



Bathytroctes calcaratus Max Weber, Siboga-Exp. Fische 1913, p. II. 



B. 7; D. 17; A. 17; P. 13; V. 9; L.I. 55; L. tr. about 18. 



Head 3 4 / 5 4 ! / 3 , naked, its profile sloping down with a slight 

 convexity above the eyes and a conspicuous concavity of the 

 snout; lastnamed twice longer than eye and conspicuous by 

 its breadth in consequence of the lateral prominence of jaws. 

 Eye high, 5 to nearly 6, 2 4 / 5 3 in snout and nearly 3 times 

 in interorbital space, which has a deep, broad furrow. Posterior 

 crescentic nostril, the point of which is directed downward, 



Fig- 35- Bathytroctes calcaratus M. Web. 



contiguous to orbital margin; quite close before it is the 

 roundish anterior nostril. Gape of the mouth ascends obliquely, 

 the lower jaw is prominent and has besides, at the symphysis, 

 a triangular tubercle, obliquely directed anteriorly and inferiorly. 

 The pointed posterior end of the intermaxillary is about half 

 the length of the snout distant from the anterior border of the 

 eye; above it, reaching far anteriorly, lies the maxillary, the 

 rounded posterior border of which lies in the vertical through 

 posterior margin^ of eye. Jaws with a row of internally curved 

 'teeth, scrme-wirat stronger but straight ones on vomer and 

 palatines* Base' & .yjsntrals in the middle of .the interspace 

 Snout" and base of caudal, their posterior point oppo- 



