102 HAPLOMI. 
Peecilia occidentalis, Garm. Mem. Mus. Comp. Zool. xix. 1895, p. 71°; Rutter, Proc. Calif. Ac. 
Sci. (2) vi. 1896, pp. 261" and 267°; Meek, Publ. Columbian Mus., Zool. v. 1904, p. 150°. 
Hab. Pacific Coast Rivers from Arizona to Jalisco: 
Rio Santa Cruz in Arizona!?4; Rio Sonora? and Rio Yaqui‘? in Sonora; 
Tepic in Jalisco ®. 
8. Pecilia elongata, | 
Pecilia elongata, Giinth. Cat. Fish, vi. p. 842’ (1866), and Trans. Zool. Soc. vi. 1869, p. 484, t. 85. 
fig. 2°; Jord. & Everm. Bull. U.S. Nat. Mus. xlvii. 1896, p. 607°; Gilb. & Starks, Mem. 
Calif. Ac. Sci. iv. 1904, p. 54°. 
Depth of body 34 to 4 in the length, length of head about 4. Snout as long as or a little shorter than eye, 
the diameter of which is 33 to 3? in the length of head. Interorbital width nearly equal to the distance 
from the posterior edge of pupil to the free edge of operculum. 380 to 33 scales in a longitudinal series. 
Dorsal 9-10; anterior angle acute, free edge straight, oblique; origin nearly equidistant from tip of 
snout and posterior edge of caudal (2). Anal 8-9; origin a little in advance of that of the dorsal. 
Pectoral as long as the head. Caudal rounded. Least depth of caudal peduncle 2 to 2 the length of 
head (@). Olivaceous, with indistinct narrow cross-bars. 
Hab. Panama! 24, 
Here described from several specimens, including the types, all females, measuring 
up to 130 mm. in total length. 
Pecilia cuneata, Garman (Mem. Mus. Comp. Zool. xix. 1895, p. 62), from Turbo, 
is described as having 28 to 29 scales in a longitudinal series, but is otherwise very 
similar to P. elongata, with which it may prove to be identical. 
4, Pocilia sphenops. (Tab. XIII. figg. 1-7.) 
Pecilia sphenops, Cuv. & Val. Hist. Nat. Poiss, xviii. p. 130, t. 526 (1846)'; Giinth. Cat. Fish. vi. 
p. 643 (1866) ?; Garman, Mem. Mus. Comp. Zool. 1895, p. 59°; Jord. & Everm. Bull. 
U.S. Nat. Mus. xlvii. 1896, p. 694%; Meek, Publ. Columbian Mus., Zool. v. 1904, p. 153, 
fig. 49°. 
Pecilia mexicana, Steind. Sitzungsb. Ak. Wien, xlviii. 1863, p. 178, t. 4. fig. 1°; Giinth. t.c. 
p. 8340"; Jord. & Everm. t. c. p. 692°. 
Pecilia thermalis, Steind. t. c. p. 181, t. 4. fig. 3°. 
Xiphophorus gilltt, Kner & Steind. Abhandl. Bayer. Ak. x. 1864, p. 28, t. 4. fig. 1"°. 
? Gambusia modesta, Trosch. in Miiller’s Reise Mexico, iii. Append. p. 105 (1865) ". 
? Gambusia plumbea, Trosch. t. c. p. 106. 
Pecilia chisoyensis, Giinth. t. c. p. 842"; Jord. & Everm. t. c. p. 693“. 
Pecilia dovii, Giinth. t. c. p. 344"; Jord. & Everm. t. c. p. 695 *. 
Pecilia gilltt, Giinth. Trans. Zool. Soe. vi. 1869, p. 485 ”. 
? Platypecilus mentalis, Gill, Proc. Ac. Philad. 1876, p. 335”. 
Peecilia vandepolli, Van Lidth de Jeude, Notes Leyden Mus. ix. 1887, p. 488"; Jord. & Everm. 
t. c. p. 696”. 
Pecilia vandepolli arubensis, Van Lidth de Jeude, |. c.* ; Jord. & Everm. |. c.”. 
Pecilia boucardii, Steind. Sitzungsb. Ak. Wien, lxxvii. 1878, p. 386, t. 3. figs. 2&3"; Jord. & 
Everm. t. c. p. 695 *; Gilb. & Starks, Mem. Calif. Ac. Sci. (2) iv. 1904, p. 51”. 
