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 I. Avocettina infans (Gthi). 



NemkhtJiys infam Giinther, Ann. Mag. Nat. Hist. II. 1S7S, p. 252. — Challenger- 

 Report Deepsea Fishes 1887, p. 264. 



^.LabUhthys elongatus Gill & Ryder, Proc. U. S. Nat. Mus. VI. (1883) 1884, p. 262. 



KLabkhthys Gilti Bean, Proc. U.S. Nat. Mus. XIII. 1890, p. 45. 



Avocettina infans Jordan & Davis, Report for 1 888 U. S. fish Comm. 1892, p. 655. 



Labichthys infans Goode & Bean, Oceanic Ichth. 1895, p. 153. 



^Az'occ-ttina elongafa Jordan iv: Evermann, Fishes North & Middle America III. 

 1898, p. 2802. 



Avocettina infans Brauer, Deutsche Tiefsee-Expcd. Tiefseetische 1906, p. 129. 



Avocettina infans M. Weber, Siboga-Exp. Fische 191 3, p. 53. 



D. 325—353; A. 240—307; P. 14—15- 



Height 40 — 48; head more or less than 9.5; snout 1.3 — 1.4 

 in length of head. Eye about 14, 2.3 — 2.6 times in postorbital 

 part of head and twice or somewhat less than twice in interorbital 

 space. Distance of origin of dorsal from base of pectorals less 

 than twice the diameter of the eye. IVstorbital part of head 

 3.6 — 4 times in distance of anal from base of pectorals; length 

 of pectorals somewhat less or more than length of postorbital 

 part of head. Dark brown, lateral pores in a blackish line. 

 Length 600 mm. 



Distribution: Florcs Sea (1600 M. mud!); Molucco Passage 

 (1994 M. coarse sand!); Halmahera Sea (827 M. hard bottom!); 

 Banda Sea (2477 M. mud!); East coast of Sumatra (750 M.) — 

 Atlantic: West Indies, Sierra Leone, Gulf of Guinea; Indie: 

 Chagos Archipelago; East coast of Africa between Zanzibar 

 and Aden. 



9. Fam. Synaphobranchidae. 



Body elongate, compressed, covered by rudimentary scales, 

 which are either lanceolate and placed at right angles or small and 

 rounded and imbedded in the skin. Lateral line present. Anus 

 far behind gillopenings, but before middle of length. Dorsal 

 and anal confluent with caudal. Dorsal beginning close behind 

 pectorals [Histiobranclius] or behind anus [Synapliobranclius], 

 it is lower than anal. Pectorals present. Snout conical, pointed, 

 jaws about equal. Cleft of mouth reaching far behind eye, 

 closing completely. Nostrils large, the anterior in a short tube, 

 the posterior an opening shortly before eye. Tongue not free; 

 mucous membrane of mouth black. Teeth sharp, rather small, 



