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Marcu, 1914. List or Fisnes or Costa Rica — MEEK. 113 
Alfaro Meek, Pub. Field Mus., Zoél. Ser., x, (September) 1912, 72 
(type Alfaro acutiventralis Meek). 
Petalurichthys Regan, Ann. & Mag. Nat. Hist., (November) 1912, 
494 (substitute for Petalosa preoccupied in Coleoptera). 
This paper by Regan, in which he first established the genus Petalosa, 
was overlooked by me in preparing an account of the new species 
collected by myself in Costa Rica in 1912, which resulted in my pro- 
posing the name Alfaro for this peculiar and interesting form. This 
name, however, preceded the substitute proposed by Mr. Regan after 
he discovered that Petalosa was preoccupied in Coleoptera. 
Alfaro cultratum (Regan). 
Petalosa cultratum Regan, Ann. & Mag. Nat. Hist., 1908, 458 (Rio 
Iroquois, Costa Rica). 
Alfaro acutiventralis Meek, Pub. Field Mus., Zo6l. Ser., x, 1912, 72 
(Guapilis, Costa Rica). 
Petalurichthys cultratum Regan, Ann. & Mag. Nat. Hist., 1912, 494 
(name only). 
Alfaro cultratum Regan, Ann. & Mag. Nat. Hist., 1913, 981 (Costa 
Rica). 
Taken only among the rocks in clear rocky streams. One other 
species of this genus is known from Brazil. 
Guapilis (38), 30 to 80 mm.; Parismina (36), 45 to 80 mm.; “ Junta 
(9), 35 to 70 mm.; Virginia (15), 45 to 80 mm. 
Priapichthys turrubarensis (Meek). 
Gambusia turrubarensis Meek, Pub. Field Mus., Zool. Ser., x, 1912, 
71 (Turrubales, Costa Rica). 
Priapichthys turrubarensis Regan, Ann. & Mag. Nat. Hist., 1913, 
992. 
Very abundant. 
Orotina, April 22 (65), 25 to 65 mm.; Turrubales (89), 30 to 70 mm.; 
Jesus Maria (37), 30 to 70 mm.; Rio Higuerén (48), 45 to 60 mm. 
(Alfaro). 
Priapichthys parismina (Meek). 
Gambusia parismina Meek, Pub. Field Mus., Zoél. Ser., x, 1912, 71 
(Parismina). 
Priapichthys parismina Regan, Ann. & Mag. Nat. Hist., 1913, 992. 
This species is easily distinguished from the other Costa Rica 
