1913.] NATURAL SCIENCES OF PHILADELPHIA. 545 



broad edges to scales on back. A dark vertebral streak along side 

 of bodj^ becomes blackish along caudal peduncle side, and joins 

 ill-defined caudal blotch behind. Caudal blotch blackish, a little 

 smaller than eye and continued out over median caudal rays. At 

 third scale of vertebral streak, also on fourth, a nearly cuboid blackish 

 humeral blotch. Upper surface of head, muzzle and side with 

 dusky dots. Iris slaty. Isthmus pale. Fins all sprinkled or 

 dusted with dusk}' dots. 



Length 33 mm. 



Type, No. 39,228, A. N. S. P. Tributary of Madeira River near 

 Porto Velho, Brazil. January-February, 1913. Edgar A. Smith. 



Also, No. 39,229, A. N. S. P., paratype, same data. Head 3|; 

 depth 3^; D. ii, 9; A. iv, 18, i; scales 32 in median lateral series 

 to caudal base, and 2 more on latter; 1. 1. of 8 tubes; 10 scales trans- 

 versely between dorsal and ventral origins; 10 predorsal scales to 

 occipital process; snout 3j in head; eye 2j; maxillary 2; inter- 

 orbital 2f ; length 30 mm. 



This species resembles Hemigrammus schmardcv (Steindachner) 

 in color, though differs in the absence of maxillary teeth. 



(MeXay/poo?^ swarthy, with reference to the general color.) 

 Hemigrammus ocellifer (Steindachner). 



Two examples from Igarape Candelaria (about two miles from the 

 Madeira River, and into which it flows), in S. Lat. 8° 45', W. Long. 

 63° 54', Brazil. September, 1912. 



Fourteen examples from the Madeira River, about 200 miles east 

 of W. Long. 62° 20', Brazil. September, 1912. 

 Hyphessobrycon hasemani sp. nov. Fig. 13. 



Head 3i; depth 3|; D. ii, 8; A. in, 27; P. i, 10; V. i, 8; scales 

 about 32 in median lateral series to caudal base; 10 scales trans- 

 versely between dorsal and ventral origins; 11 predorsal scales; 

 head width 2 in its length; head depth 1| at occiput; mandible 2^; 

 first branched dorsal ray about lyV; first branched anal ray If; 

 least depth of caudal peduncle 3f; upper caudal lobe 1; pectoral 

 If; ventral 2; snout 4| in head, measured from upper jaw tip; eye 

 2f; maxillary 3^; interorbital 3|. 



Body elongate, compressed, upper profile forms broad obtuse 

 angle at origin of dorsal, which point deepest part of body, predorsal 

 with obsolete median ridge and edges otherwise rounded convexly. 

 Caudal peduncle compressed, small, its length from last anal ray 

 base about equal to its least tlepth. 



