88 Fretp Museum or Naturat History — ZoéLocy, VoL. X. 
In general appearance this species resembles G. episcopa, the dorsal 
fin is more posterior, the head much shorter, and the dorsal and anal 
fins smaller. 
Pacific slope of eastern Panama. 
Gambusia darienensis sp. nov. 
Type No. 7597, F. M. N. H.; length 35 mm.; Rio Capeti, Panama. 
Head 4.0 to 4.2; depth 3.5 to 3.6; D. I, 6 or 7; A. II, 6 or 7; scales 
730. ; 
Body elongate; the dorsal region little elevated; mouth small, the 
gape extending about 14 distance to eye; teeth in several series, the 
outer enlarged; snout 3.7 to 3.8 in head; eye 3.0 to 3.2; origin of dorsal 
behind anal fin, its distance from base of caudal 2.3 to 2.4 in its distance 
from tip of snout, about midway between tip of caudal and opercle 
or posterior margin of eye; anal fin with margin nearly straight, the 
tip of first rays scarcely reaching those of last rays when the fin is de- 
flexed; longest anal rays 1.2 to 1.3 in head; ventrals reaching anal; 
caudal fin rounded; caudal peduncle 1.4 to 1.5 in head; gill-rakers 13; 
18 scales before dorsal fin. 
One male (29 mm.) has head 3.9; depth 4.4; snout 3.6 in head; eye 
3.4; modified anal .75, its tip reaching about % distance to base of 
caudal fin. 
Color @ olivaceous, uniform, the margin of the scales lighter; 
SO with about 20 narrow vertical dark bars on sides behind pectoral 
fin, sides without dark spots, otherwise like the female. 
The caudal fin is more rounded on this species than in any of the 
others. It is especially characterized by its small dorsal fin which 
is well posterior of the anal fin. The tips of first rays of the anal fin 
do not reach tips of last rays when the fin is deflexed. 
Tuyra River basin. 
Family CICHLIDA. 
Cichlasoma umbriferum sp. nov. 
Type No. 7598, F. M. N. H.; length 195 mm.; Rio Cupe, Cituro, 
Panama. 
Head 2.3 to 2.6; depth 2.4 to 2.6; D. XVII, 11; A. VI, 8; scales 33. 
Body elongate, rather robust; anterior profile evenly convex to eye, 
straight or slightly concave on snout; lower margin of upper lip on 
level with lower portion of eye and upper edge of base of pectoral; jaws 
