SEpT., 1912. New FisHes rrom Cost R1icA— MEEK. 71 
Gambusia turrubarensis sp. nov. 
Type No. 7576, F. M. N. H.; length 61 mm.; Turrubares, Costa Rica. 
Head 4.0 to 4.3; depth 3.3 to 3.6; D. 1, 60r 7; A. 2, 6 or 7; scales 7-28. 
Body elongate, profile convex; mouth small, with small lateral 
cleft; outer series of teeth the larger; eye 2.9 to 3.1 in head; snout 4.2 to 
4.4; pectoral about as long as head; anal fin rounded, its longest rays 
1.2 to 1.3 in head; origin of dorsal over last rays of anal,its distance to 
base of caudal 2 or nearly so, in its distance to tip of snout; gill rakers 
21; caudal peduncle 1.3 to 1.4 in head (in females 55 to 76 mm.) one 
male (36 mm.) has head 3.9; depth 3.5; eye 2.6; snout 5; modified anal 
nearly reaching caudal, 2.4 in body, or nearly twice the length of the 
head. — 
Color (both sexes) olivaceous, sides with about 8 or 9 narrow dark 
- bars on anterior three fourths of the body, fins all plain dusky. 
Gambusia parismina sp. nov. 
Type No. 7578, F. M. N. H.; length 52 mm.; Parismina, Costa Rica. 
Head 3.5 to 3.8; depth 4.2 to 4.5; D. 1, 6or 7; A. 2, 7; scales 8-28. 
Body elongate, moderately compressed; top of head flat; mouth 
small, its gape extending 34 distance to eye; lower jaw slightly the 
longer; upper jaw protractile; teeth fixed, in bands, the outer the larger; 
eye 2.6 to 2.7 in head; snout 3.6 to 3.8; gill rakers 12; pectoral 1.2 in 
head, of 12 rays, slightly below axis of the body; anal long, its first rays 
longest, their tips beyond tips of last ray when the fin is deflexed, its 
longest ray 1.3 in head; dorsal small, its margin rounded, its origin 
behind last anal ray, its distance from caudal 2.3 in its distance from tip 
of snout; the fin being wholly on posterior third of the body; caudal 
peduncle 2 in head. 
Color dark olivaceous, dorsal with 2 faint dark cross bars, a large 
black spot with light margin at base of caudal; base of anal with a large 
black spot. 
This species has the general aspect of Rivulus. One female con- 
tained 13 eggs, some with eye spots and a few with well-formed young. 
The species is viviparous, but our collection contains no males. 
Poecilia pittieri sp. nov. 
Type No. 7580, F. M. N. H.; length 68 mm.; La Junta, Costa Rica. 
Head 4.1 to 4.4; depth 2.6 to 2.8; D..1, 8; A. 2, 6 or 7; scales 8-28. 
Body robust, compressed; mouth small, the teeth in narrow bands, 
the outer series the larger; lower jaw weak; mouth small; eye 2.5 to 2.8 
in head; snout 3.4 to 3.8; pectoral 1.0 to 1.1; dorsal fin in advance of 
