ART. 19. NEW SPECIES OF FISHES FOWLER AND BEAX. 7 



arch, besides more dorsal and anal rays. EngraidiH hreviro.^tris 

 Gimther 2 has : D. 15; lateral series of scales, 41; depth, 5;^; head, 4^; 

 eye, 3^ in head; maxillary dentition exceedingly tine, bone dilated 

 and rounded behind, not extending back to niandibiilary joint: 

 dorsal origin midway between snout end and caudal base; lateral 

 silvery band narrower in its anterior third; length, 88 mm. 

 (Named for San Salvador, an old name of Rio Janeiro.) 



Subfamily Rasborinae. 



RASBORELLA, new genus. 



Type. — Rasborella duhia^ new species. 



Body elongate, abdomen rounded. Head moderate. Eyes with 

 free lids. Mouth oblique, moderate, terminal. Premaxillaries pro- 

 tractile. No barbels. Gill-rakers short, lanceolate. Pliaryngeal 

 teeth 5-5, edges serrated. Scales moderate and well exposed. Lateral 

 line incomplete. Dorsal fin without osseous ray, inserted between 

 A'entral and anal origins. Dorsal and anal about equally large. 

 Caudal forked. 



One species. 



{Basbo7'a, the typical Indo-Malayan genus.) 



RASBORELLA DUBIA, new species. 



Head 3J; depth 4^; D. iii, 7, 1; A. iii, 10, i; P. ii, 14; V. i, 7; soales 

 43 in lateral line to caudal base, the first 14 being tubular, and 2 more 

 on caudal base; 12 scales transversely at dorsal and anal origins; 23 

 predorsal scales ; head width 2 in its length ; head depth about If ; 

 first branched dorsal ray If; first branched anal ray 2; least depth 

 of caudal peduncle 2Jt; caudal li^o5 pectoral If ; ventral 1|; snout 4 

 in head from upper jaw tip; eye 3; maxillary 3; interorbitai 3. 



Body elongate, well compressed, deepest at ventral origin, body 

 edges all convex. Caudal peduncle well compressed, least depth 

 about 2^ its length. Head well compressed, lower profile little more 

 inclined than upper and flattened sides but slightly approximated 

 below. Snout convex over surface and in profile, length about four- 

 fifths its width. Eye large, anterior, though hind edge little behind 

 middle in head length. Mouth moderate, well inclined, jaws about 

 even or lower scarcely projects, edges firmly trenchant. Lips thin 

 and developed laterally. Maxillary narrow, largely concealed, nearly 

 extends to eye. Nostrils together, front one simple, near last two- 

 fifths in snout and crescentic hind one closely posterior. Interorbitai 

 convex. Suborbitals narrow, cover only about one-third of cheek. 

 Opercle and subopercle smooth. Gill-opening foiw.ard about last 

 two-fifths in head or not quite to hind eye edge. Gill-rakers 3+12. 



2 Cat. Fish. Brit. Mu.s., vol. 7, 1868, p. 392, Caxoeira. Bahia. 



