114 Field Museum of Natural History — Zoology, Vol. X. 



Priapichthys by the large black caudal spot. 

 Parismina (28), 37 to 55 mm. 



Priapichthys olomina sp. nov. 



Gamhusia terrabensis Meek (not Regan), Pub. Field Mus., Zool. 

 Ser., VII, 1907, 146 (Las Cafias, Alajuela, Costa Rica). 



Type No. 7827, F. M. N. H.; length 50 mm.; Orotina, Costa Rica. 



Head 3.7 to 4.0; depth 3.2 to 3.3; D. 9 or 10; A. 8 or 9; scales 28. 



Body robust; top of head flat; snout equal to or shorter than eye, 

 its length 3.3 to 3.7 in head; diameter of eye 3.0 to 3.6; interorbital 1.7 

 to 1.8; pectoral not reaching ventrals, 1.3 in head; depth of caudal 

 peduncle 1.5 in head; anal fin of male reaching ^3 distance to caudal 

 fin, its length 4 in body. 



Greenish olive, edges of scales black; side with a row of small quad- 

 rate spots which disappear in some large examples; posterior ^ of 

 body with narrow vertical bars, interradial membranes of dorsal black; 

 anal with a black blotch at base of anterior 5 rays extending to tip of 

 third ray; caudal sometimes with a black bar near its tip. 



This species is very abundant in the valley of the Rio Grande de 

 Tarcoles. 



Orotina, April 20 (135), 25 to 50 mm.; Turrubales (3), 40 to 50 mm.; 

 Pacaca (3), 26 to 48 mm. (Alfaro); Pacific Side (16), 20 to 60 mm. 

 (Alfaro). 



Priapicthys annectens (Regan). 



Gamhusia annectens Regan, Ann. & Mag. Nat. Hist., 1907, 259 

 (Carillo, Juan Vinas and Irazu, Costa Rica); — Regan, Biol. 

 Cent. Amer., 1907, 97, pi. xiv, figs. 5 and 6 (Carillo, Juan Vinas 

 and Irazu, Costa Rica); — Meek, Pub. Field Mus., Zool. Ser., 

 VII, 1907, 145 (Turrialba; San Jose; Quebrada de los Negros; 

 San Isidro; Pacific Side). 

 Priapichthys annectens Regan, Ann. & Mag. Nat. Hist., 1913, 992 



(Costa Rica). 

 This species is more abundant in the streams about San Jose than 

 any of the species of fishes found there. 



Rio Maria Aguilar (16), 32 to 60 mm. (Alfaro); San Jose (27), 26 

 to 49 mm. (Alfaro) ; Quebrada de los Negros (24), 35 to 62 mm. (Alfaro) ; 

 San Isidro (2), 43 mm. (Alfaro); Tucurrique (5), 38 to 60 mm. (Alfaro); 

 Tobosi (2), 30 mm. (Alfaro); San Josd, April 26 (180), 30 to 70 mm.; 



