22 MEMOIRS OF THE CARNEGIE MUSEUM. 



Dorsal small, about four times in the length; adipose well -developed; caudal 

 forked, the lobes three and one-half to four times in the length; anal slightly 

 emarginate, the highest ray reaching tip of thirteenth ray. Ventrals not quite 

 reaching anal, pectorals to, or a little beyond, origin of ventrals. 



Fig. 5. Probolodus heleroslomus Eigenmann. a, outlines of side of head; b, top of head showing frontal 

 (/) and occipital (o) fontanels; c, dentition. C. M. 6881. 



A large vertical humeral spot, chiefly above the third and fifth scale of the 

 lateral Hne; a silvery lateral band. A spot on caudal peduncle, in the young 

 definitely continued to the end of the middle rays. 



Genus IV. Aphyocharax^" Glinther. 

 Aphyocharax Gtinther, Proc. Zool. Soc. London, 1868, p. 245 (pusillus). 

 Holoprion Eigenmann, Smithsonian Misc. Coll., Quarterly, Vol. XLV, 1903, p. 145 

 {agassizii). 

 Type : Aphyocharax pusillus Gtinther. 



Elongate, slender fishes, reaching a maximum length of about 80 mm., most of 

 them much shorter. 



'" a<t>bv, = a small fish, anchovj', sardine, or Motella; xapaf = a pointed stick, or paUsade; Charax, a 

 genus of characid fishes with pointed teeth. 



