335 



in jaws in narrow bands, at the inner side with a series of 

 larger teeth; in young specimens they are less numerous. On 

 intermaxillary plate an oval patch of larger teeth, on vomer 

 a long narrow band, tapering posteriorly. Gillopenings ventral, 



Fig. 163. Synaphobranchus brevidorsalis Gthr. X 2 /5- 



The small figure shows the united gillopenings at the ventral surface between 

 the bases of the pectorals /. X 3 /5- 



united into an oval groove between the base of the pectorals, 

 separated by a considerable isthmus within. Branchial openings 

 in pharynx are wide slits. 



Distribution: Deep sea, from 195 3749 M. depth. 



i. Synaphobranchus Johnson. 



(JOHNSON, Proc. Zool. Soc. London, 1862, p. 169). 



Dorsal beginning behind anus; pectorals well developed, less 

 than 3 times in length of head. 



Distribution: Deep sea of Atlantic, Indie and Pacific. 



i. Synaphobranchus brevidorsalis Gthr. 



Synaphobranckvs brevidorsalis Giinther, Challenger Rep. Zool. XXII. 1887, p. 255. 

 Synaphobranchus jenkinsi Jordan & Snyder, Proc. U. S. Nat. Mus. XXIII. 1901, 



P- 845- 

 Synaphobranchus brevidorsalis Brauer, Deutsche TiefseeExp. Tiefsee-fische, 1906, 



P- 134- 

 Synaphobranchus brevidorsalis M. Weber, Siboga-Expeditie Fische, 1913, p. 55* 



