2^') 



HEROS*. 



I leros, pt., I led,-, linisil. Fliiss-Fisriic in Ann. IVicn. Mas. ii. !>-! K),p..'>(;:^. 

 [loriclitliys, Ihiinl \ '•'inm/ i>i Prav. Acud. Nat. Sr. PhildiL |S.")4. j). •_'"). 

 ilopliircluis, pi.. KiiKji, 1]'i(;/tii. AjtIi. 1S()0. p. \'2f<. 



Hddy ('(unprcvsscd, olilimn", ci>vltc(1 with ctenoid scales of moderate 

 size. Dofsal sjiiiies numerous, jinul sjiiiu's more than four; base of 

 the soft dorsal scaly or sometimes naked. Teeth in a hand, small, 

 conical. Antci'ior prominence of the first branchial arch short liorny 

 processes. Cleft of the month of moderate width. Scales on the 

 cheeks small, (/cnfridh/ in nnn-e than four series. The origin of llu! 

 ventral falls vertically behind that of the doi's;d. 



Central and South America. 



1 . Heros parma. 



1). il_. A.—. I,, lat. ;51. L. transv. 5/13. 



i'j-i:t y-ifi 



The fold of the lower liji intcrrui)ted in the middle ; five or six 

 si'ries of scales on the cheek. The height of the body is about one- 

 half of the total length (without caudal). Brownish, with seven cross- 

 Itands. 



Mexico, (fuatemala. 



(i-c. From seven to nine inches long. Mexico. From the Berlin 



Museum (as //. dcppil). 

 d-(j. From three to seven inches long. Guatemala. From Mr. O. 



Salviii's Collection. 



De.'icrijitloii. — The height of the l)ody is one-half of the total length 

 (witlnmt caudal), in the largest sjiecimen rather more that! one-half, 

 and in the young ones somewhat less ; the length of the head is one- 

 thii-d of the total, or a little less tliaii one-third. Head rather higher 

 than long, with the nape very convex in adult specimens. Snout of 

 moderate extent, eom})ressed, more or less elevated, much longer than 

 the eye. Cleft of the mouth slightly obli(iiie, with the jaws etjual 

 anteriorly, and with the maxillary hidden below the praiorbital and 

 not extending to below the front margin of the orbit. Jaws rather 

 protractile, armed wdth a broad band of villiforra teeth, the teeth of 

 the outer series being enlarged. Praeorbital wider than the orbit. 

 lnt(^rorbital space very convex, wider than the orbit. Eye nearly in 

 the middle of the length of the head. 



Base of the soft dorsal aiid anal with a few small scales. Dorsal 

 spiaes of moderate length and strength : the length of th(^ twelfth is 

 rather less than one-half of that of the head in adult specimens, and 

 exactly one-half in young ones. The soft dorsal and anal are ele- 

 vated ; caudal rounded. Pectoral rounded, not much shorter than the 

 head. The outer ventral ray prolonged, less so in young individuals. 



Brownish- or greenish-olive, with seven very indistinct dark cross- 



"' I. Chroni-ys lasciatn. Casti'hi. Ainm. iioiiv. on rarcs Amir. Sud, I'tnss. p. 17. 

 pi. It. fig. 2.- Ara{j;iiay. 



