418 PROCEEDINGS OF THE ACADEMY OF [June, 



head, measured from snout tip; eye 2f to 4J; maxillary 2f to 3^; 

 interorbital 2 to 2f. Body rather robust, compressed, more so in 

 male. Head short, obtuse. Snout depressed, length f to § its 

 width. Eye close to upper profile, centre near first third in head. 

 Mouth moderate, lower jaw obtuse, projects. Teeth conic, fine, in 

 bands in jaws, outer row enlarged. Interorbital flat. Gill-rakers 

 2 or 3 + 9, lanceolate, about half length of filaments. Scales largest 

 on top of head, smaller on breast, belly and caudal base. Lateral 

 line complete, inconspicuous, as single small pore on middle of 

 exposure of each scale medianly along side. Dorsal origin little 

 nearer caudal base than gill-opening in adult female, much nearer 

 latter in young and adult male. Anal origin about opposite second 

 branched dorsal ray base, fin much higher than dorsal. Female 

 without anal sheath, though with long simple tube, long as first ray. 

 Caudal truncate, rounded convexly behind Avhen spread open. 

 Pectoral not quite reaching ventral, latter not to anal. Paired fins 

 still shorter in adult female. Color in alcohol, of male, brownish 

 generally, little paler below. Sides with about fourteen to seventeen 

 narrow vertical bars, less than half width of exposed scales. Also in 

 course of each bar scattered pearly or whitish rounded spots, smaller 

 and more crowded about caudal base. Vertical fins dusky, with 

 irregular and variable whitish spots, smaller on caudal, and edges 

 of all these fins broadly whitish. Female uniform brownish, paler 

 on under surfaces, and without dusky or dark pectorals and ventrals 

 of male. Male with terminal portions of anal rays covered with 

 little points or denticles, row to each shaft. These absent in female, 

 though in some females a few little points or granules on rays of 

 dorsal fin on their outer portions. Length 33 to 91 mm. Nos. 

 7,227 to 7,233 and 7,293 to 7,303, A. N. S. P. Cotypes of F. nisorius 

 Cope. Gaboon, West Africa. P. B. Duchaillu. 



This very interesting species, incompletely described by Cope, 

 is the exact African counterpart of F. heteroclitus. It resembles the 

 latter in almost all respects, and differs in but few minor characters, 

 as shorter pectorals, etc. 



Fundulus antillarum sp. nov. Fig. 1. 



Head 3^; depth 3f; D. i, 11; A. i, 9; P. 16; V. i, 5; scales about 

 34 in median lateral series to caudal base, and 4 more on latter; 

 13 scales transversely between dorsal and anal origins; about 23 

 predorsal scales; head depth at occiput If its length; head width 

 If; fifth branched dorsal ray If; fifth branched anal ray If; least 

 depth of caudal peduncle If; caudal 1 T V; pectoral 1^; ventral 2\; 



