112 Miscellaneous. 



phana, corneo-cinerea, carina fulvescente, apice obtusiusculo. 

 Anfractus ]0|, exsertinsculi, plani, sutiira impressa, marginata 

 divisi ; ultinnis valde convexus, ad umbilicum subangulatus, ad 

 aperturam deflexus, disjuuotus et subconstrictus; umbilicus inaxi- 

 mus, conicus, apertus, anfractus omnes ostendens. Apertura 

 rotundo-lunata, peristoraate continue, incrassatulo, undique es- 

 panso. Alt. 0-005*, lat. 0-010 m. 



Comptes Eendus, May 6, 1878, p. 1 149. 



On a remarJcahle new Generic Type of Characins. 

 Bj' Theo. Gill. 



More than ten years ago I discovered and laid aside in the 

 mixseum of the Smithsonian Institution a specimen representing a 

 previously unnamed genus of Characins, which was strikingly 

 distinct from any recognized by other naturalists. I delayed the 

 announcement in the hopes of being able to publish it in connexion 

 with a revision of the whole family ; but I deem it now expedient 

 to introduce it without further procrastination. The genus may be 

 called and distinguished as follows : — 



Elopomobphus. 



Curimatine Characinids with an elongated fusiform body; rounded 

 belly ; conic head with the operculum very oblique ; mouth termi- 

 nal and apparently transverse, but capable of considerable disten- 

 tion, the supramaxillaries being quite movable and the mandible 

 inserted under the eye; the margins of the jaws trenchant; teeth 

 none ; the dorsal median and above the ventrals ; the anal short ; 

 the gill-arches acutely bent and with prolonged limbs, and the gill- 

 rakers very numerous and setiform. 



Elopomorphus Jordanii. 



The height of the body is contained about five times and a third 

 in the (extracaudal) length, the length of the head rather more 

 than three times and a half; the eyes are covered with a mem- 

 branous coat ; there are about 100 scales in the lateral line, and 

 seventeen rows between the back in fi'ont of dorsal and the lateral 

 line. 



D. 11, A. 11, P. 10, V. (1) 12. 



The colour, in alcohol, is rufescent and without decided markings. 



The single specimen in the Smithsonian collection was obtained 

 many years ago by Lieut. Gibbon from the Marmore River in 

 Bolivia. 



The Anodus elonr/atus of Spix seems to be a congeneric but quite 

 distinct species.— ^ieZrf atid Forest, May 21. 



