44 MUBiEIflDJE. 



Posterior nostril a slit, situated below the level of the upper margin 

 of the orbit ; anterior nostril not tubular. Eye rather large. 

 East-Indian archipelago. Chinese Sea. 



1. Uroconger lepturus. 



Congrus lepturus, Richards. Voy. Sulph. Fish. p. 106, pi. 56. figs. 1-6, 

 and Vol/. Ereh. fy Terr. Fish. p. 109 ; Bleek. Act. Soc. Sc. Indo- 

 Ncerl. iii. Sumatra, vi. p. 45. 



Uroconger lepturus, Kaiqj, Apod. p. 110; Bleek. Atl. Ichth. Mur. 

 p. 29, pi. 5. fig. 1 ; Kner, Novara, Fisch. p. 373. 



Upper lip with large mucous openings like slits. Snout produced, 

 depressed. Some of the intermaxillary teeth somewhat enlarged. 

 Dorsal fin beginning above the base of the pectoral. Tail much 

 longer than the body, tapering. Vertical fins with a black edge. 



China ; East-Indian archipelago. 

 a. Type of the species, 10| inches long. China. Presented by J. 



R. lleeves, Esq. 

 h. Twelve inches long. China. 



c. Twelve inches long. East-Indian archipelago. From Dr. 

 Bleeker's Collection. 



Fifth Group. HETEROCONGRINA. 



8. HETEROCONGEE. 



Ileteroconger, Bleek. Versl. l^- 3Ie(ted. Ak. Wet. Amstcrd. 1868, ii. 

 p. 331, 



Body, and especially tail, exceedingly elongate, subcylindrical, 

 scalcless ; tail compressed. Snout obtuse, very short, with the cleft 

 of the mouth obliquely ascending upwards, the lower jaw projecting 

 beyond the upper. Mouth small, extending to below the front 

 margin of the eye. Teeth small, acicular, in narrow bauds in the 

 jaws and on the vomer. Nostrils very small, in front of the eye. 

 Gill-openings lateral, narrow slits. Pectoral none. Vertical fins 

 rather low, dorsal commencing at a short distance behind the gill- 

 opening. 



Amboyna ; Canary Islands. 



1, Heteroconger polyzona. 



Bleek. I. c. p. 332, c. tab. 

 The length of the head is two-ninths of the distance between the 

 gill-opening and the vent. Tail tvricc as long as the body. Eye of 

 moderate size. Vertical fins well developed, about half as high as 

 the body. Body light coloui'ed, with numerous brown cross bands 

 half as wide as the interspaces between. Some on the trunk extend 

 across the abdomen, those on the tail only to the lateral line ; they 

 are very narrow on the head and fore part of the trunk. 



