1903.] NATURAL SCIENCES OF PHILADELPHIA. 321 



dozen distinct vertical dusky-brown bars on the side of tlie back. 

 Other examples show a blackish axillary blotch or several rather large 

 dusky blotches either at the base of the caudal, on the back, or on the 

 abdomen. Some examples are almost black above, and with intense 

 orange on the fins. Nineteen examples. 



Adult female. Olivaceous above, and extending over the greater 

 part of the side, each scale margined with darker. About six distinct 

 longitudinal series of dusky dots along the side, parallel \\dth the 

 lateral line. Lower surface of the body pale brown or brownish-white, 

 somewhat silvery on the chest. Just above the anal many pale diffuse 

 dusky specks. Dorsal, caudal and pectoral dilute brown, a little 

 deeper basally. Anal with a pale orange tinge. Ventrals whitish. 

 Many have the anal rather bright orange, and dark olivaceous blotches 

 distributed with the same variations as seen with the dark blotches 

 of the males. One female has the three series of dots running parallel 

 to and below the lateral line, orange-ochraceous. Thirty-six examples 

 mostly gravid with ova. 



A large number of both young males and females show the coloration 

 of the adult female, except the distinct series of dots along the side. 

 The lower surface is almost entirely pale and uniform. Anal pale like 

 the ventrals. The variation of dusky l^lotches is found in most of the 

 examples, even the smallest. 



This species has been taken also in the Rio Ixtla, at Puente de Ixtla,* 

 Morelos, Balsas and La Antigua.^ 



CIOHLID^. 

 2. Heros teporatus sp. nov. 



Head 2f; depth 2^; D.-XV, 10; A. V, 8; P. i, 14; V. I, 5; scales 

 29 in a lateral series to the base of the caudal, about 17 in the upper part 

 of the lateral line ; 5 scales between the front of the dorsal and the lateral 

 line, and 12 between the latter and the origin of the spinous anal; 

 width of head 2 in its length; depth of head 1^; snout 3j; eye 3}; 

 interorbital space 3^; fourth dorsal spine 2f ; least depth of caudal 

 peduncle 2J; anal Ij; fifth anal spine 2^-^^. 



Body elongate, compressed, the greatest depth about the origin of the 

 spinous dorsal, and the back not conspicuously elevated. Upper 

 profile evenl}^ convex, though a little more curved than the lower. 

 Caudal peduncle deep, compressed, and its length about two-thirds 

 its depth. 



Head rather triangular, compressed, and its depth at the posterior 



1 Jordan axd Snyder, Bull. U. S. Finh Cornm., 1900, p. 130. 



2 Meek, Field Col. Mu.'^. Pub., 6.5, Zool., Ser. Ill, No. 6, 1902, p. 106. 



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