486 PROCEEDINGS OF THE ACADEMY OF [Oct., 



Almendares river at Calabazar, at the mo\ith of a small stream empty- 

 ing into the ocean at Marianao and Lagima Castellano No. 2. The 

 specimens from this lagoon are very light colored and have a more 

 elongate body than the other specimens. 

 Gambusia puncticulata Poey. 



Very abundant. Our specimens were caught at Calabazar and in 

 Laguna Castellano No. 1. Those from the latter place were collected 

 by Prof. Baker, of the Estacion Central Agronomica de Cuba. 

 Poecilia vittata Guichenot. 



Found everywhere. Our specimens from Lagunas Castellanos Nos. 

 1 and 2, from Calabazar and from the stream north of Batabano. All 

 the specimens from Laguna Castellano No. 1 are dark colored; both 

 males and females were caught in Laguna Castellano No. 2 and every 

 one is light in color. All the females contain eggs. Those caught at 

 Calabazar and at Batabano are dark colored, which is due to the clear 

 water. 



OIOHLID^. 



The individuals of the genus Heros are quite common everywhere. 

 They are as abundant in the streams of western Cuba as are the sun 

 fishes in Indiana. They vary greatly in coloration. 



Heros tetracanthus (Cuvier & Valenciennes). 



Many specimens caught in the Lagunas Castellanos. Those from 

 Laguno Castellano No. 1 are very dark colored; some of them are dark 

 brown and approach a black, while others are much lighter in color. 

 Most of the scales with a dark brown spot at base, these spots forming 

 faint longitudinal series; head, preoperculum and operculum darker 

 than other parts of body; preoperculum with three almost black length- 

 wise streaks; dorsal, anal, and caudal with dark spots. 



The following is the color description of a specimen from Laguna 

 Castellano No. 2. Background flesh color, black dots forming indis- 

 tinct and discontinuous longitudinal streaks; snout ashy without dark 

 spots; preoperculum and operculum with four discontinuous length- 

 wise streaks; ventrals and anal ashy; pectorals flesh color; caudal 

 without basal spot; caudal and dorsal with dark spots. 

 Heros tetracanthus cinctus Eigenmann. 



From Laguna Castellano No. 2 and the stream north of Batabano. 

 Those from Laguna Castellano No. 2, as all other specimens from the 

 same place, are light in color. Each one is barred conspicuously. 

 The specimens collected at Batabano are much darker. 



