101 



%l 



Bathytroctes Giinther. 



(GiJNTiiER, Ann. Mag. Nat. Hist. II. 1878, p. 249). 



Rather elongate, compressed, covered by cycloid deciduous 

 scales of moderate size. Cleft of mouth wide. A series of small 

 teeth on intermaxilla, maxilla, mandible, palatines and vomer. 

 Dorsal and anal rather short. Dorsal inserted conspicuously in 

 front of anal. Branchiostegals 7. Otherwise as Alepocephalus. 



Synopsis of the species 



A. Cheeks and opercles scaly, snout shorter than eye, 



which goes 3 times in head B. squamosus p. 101. 



B. Head naked. 



a. snout twice longer than eye, 5 6 in head B. calcaratus p. 102. 



b. snout shorter than eye, which goes 3 '/ 4 times in head B. macrolepis p. 103. 



i. Bathytroctes squamosus Ale. 



Bathytroctes squamosus Alcock, Ann. Mag. Nat. Hist. 1890, p. 304. Descript. 



Cat. Indian Deep Sea Fishes, 1899, p. 173. 

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



B. 7; D. 17; A. 17; p. IO; V. 9; L.I. circa 50; L. tr. 15. 



Head 3 3 / 4 4 and a little more than height. Snout much 

 shorter than eye, which is 1 J 3 the length of the head and 

 almost enters the dorsal profile. Nostrils large, situated im- 

 mediately in front of eye. Mouth-cleft wide, approaching the 

 transverse; intermaxillary short and slender, the broad maxilla 

 reaches just behind level of mid-orbit and includes the man- 

 dible in repose, except anteriorly where the latter strongly 

 projects. Small, even, acute, uniserial teeth, recurved in the 

 intermaxillae, mandibles, palatines and vomer, procurrent or 

 procurved in the maxillae. Dorsal begins just behind origin of 

 ventrals, which are situated in the vertical through the middle 

 of the body, measured without caudal. The anal begins in the 

 vertical through the 13*11 dorsal ray. Caudai * symmetrically 

 forked. Pectorals long and narrow, their, longetit : rays eq,uaK 

 to length of head behind anterior nostril., ahnpst tjquchi^g, the 

 base of ventrals. Ventrals broad, reaching slightly beyond : 



