1913.] NATURAL SCIENCES OF PHILADELPHIA. 547 



no axillary flaps. L. 1. not developed, except on 3 scales anteriorlj', 

 and these interrupted after first by break of two scales. 



Dorsal origin about midway between hind nostril and caudal 

 base, first branched ray longest, and depressed fin extends If to 

 caudal base. Adipose fin placed over last anal ray bases, fin about 

 f in eye. Anal inserted below anterior dorsal rays, first branched 

 ray longest and forms with other anterior rays conspicuous elevated 

 pointed lobe extending back when depressed opposite origin of adipose 

 fin. Caudal well forked, pointed lobes rather slender and equal. 

 Pectoral low, pointed, upper rays longest, and depressed fin extends 

 opposite ventral insertion. Latter a little before dorsal origin and 

 depressed fin extends back nearly to base of first branched anal ray. 

 Vent close before anal origin. 



Color in alcohol pale brownish, below lighter. Back with edges 

 of scales narrowly dusky. No humeral blotch or caudal blotch. 

 Head brownish above, sides and below whitish. Iris whitish, dusky 

 above and below, now largeh^ turned slaty. Fins all pale, anal and 

 caudal dusted with minute dusky dots, and dorsal with large blackish 

 blotch above and largely anterior. 



Length 28 mm. 



Type, No. 39,230, A. N. S. P. Madeira River above Falls of 

 Guajaramirim, approximately in Lat. S. 10° 47', Long. W. 65° 23', 

 Brazil. September, 1912. Edgar A. Smith. 



Only the type known. It is apparently related to Hijphessobrycon 

 minor Darbin, but differs at once in the absence of a dark humeral 

 blotch and the longer maxillary. 



(Named for Mr. John D. Haseman, who has explored much of 

 South America and contributed a number of papers to Brazilian 

 ichthyology.) 



Hyphessobrycon stigmatias sp. nov. Fig. 14. 



Head 3t; depth 3f ; D. in, 8; A. iii, 16; P. i, 12; V. i, 8; scales 

 31 in median lateral series to caudal base, and 2 more in latter; 9 

 scales transversely between dorsal and ventral origins; about 11 

 predorsal scales; head width If in its length; head depth Ij at 

 occiput; snout 4; eye 2^; maxillary 3yo; interorbital 2|; first 

 branched dorsal ray 1|; first branched anal ray If; least depth of 

 caudal peduncle 2f ; pectoral If; ventral 1^. 



Body moderately long, well compressed, deepest at dorsal origin, 

 profiles similarly convex, and edges all convexly rounded. Caudal 

 peduncle well compressed, its least depth about 1| in its length. 



