248 PROCEEDINGS OF THE ACADEMY OP [March, 



CHARAOINID^. 

 Tetragonopterus argentatus (Baird and Girard). 



Color when fresh in alcohol pale olive on upper surface, sides and 

 lower surface silvery- white. Upper boundary of silvery- white of 

 sides shows a pale diffuse leaden band, becoming distinct and dark 

 along middle of side of caudal peduncle to base of caudal. It is also 

 continued on caudal as several of median rays are same color. Dorsal 

 and caudal dilute pale olivaceous, latter with a pale ruddy wash. 

 Anal with marginal portion slightly dusky and basally with a pale 

 ruddy tinge. Pectoral and ventral also with a dilute ruddy tinge, 

 A dull slaty blotch behind opercle above. Iris pale yellowish. Del 

 Rio and Devil's river, Texas. 



PCEOILIIDiE. 

 Zygonectes notatus (Rafinesque). 

 Hartford, Arkansas. Wister, Indian Territory. 



Gambusia afiRnis (Baird and Girard). 



Devil's river, Texas. 



ATHERINID^. 

 Labidesthes sicculus (Cope). 

 Hartford, Arkansas. 



CENTRARCHID^. 

 Apomotis cyanellus (Rafinesque). 



Hartford, Arkansas. Devil's river, Texas. 

 Lepomis megalotis (Rafinesque). 

 Hartford, Arkansas. Devil's river and Del Rio, Texas. 



PERCIDiE. 

 Etheostoma whipplii (Girard). 



Color when fresh in alcohol olivaceous-brown, paler or whitish below. 

 Back and side with marblings or mottlings of deep olivaceous-brown, 

 though on latter about 13 diffuse spots are formed along course of 

 lateral line. Posteriorly, and on caudal peduncle, they become ver- 

 tically elongate. An enlarged black humeral scale. Head dusky 

 •above, and a blackish streak from eye to upper corner of gill-opening. 

 A dusky streak from below eye. Fins mostly orange-red with more 

 or less dusky basally. Spinous dorsal with a median longitudinal 

 orange-red band edged above and below with whitish. A bright 

 orange-red bar on caudal next to rather dusky margin. Pectoral and 

 ventral grayish, latter dark. Limestone Gap, Indian Territory. 



