334 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 92 
of anal origin; caudal fin a little rounded; lateral line present, the 
pores widely spaced and numbering about 11 to 17. 
Color pale brown above, lighter below; upper parts of body with 
several small dark brown to blackish spots irregularly placed, usually 
a spot near mid-base of caudal fin and a dark bar across caudal fin a 
short way out from base of that fin; adipose fin dark brown; basal 
portion of dorsal fin dusky; other fins pale or white; barbels pale 
brown. 
Remarks.—This new species differs principally from the only other 
species, P. trichomycteroides Pellegrin, referred to the genus Par- 
amphilius in its more slender body, depth 814 to 9 instead of 7, and the 
origin of the dorsal is behind the base of the pelvic fins instead of over 
their insertion. 
Named jfirestonet in honor of the Smithsonian-Firestone Expedi- 
tion, by which the collection of this material was made possible. 
Family CYPRINODONTIDAE 
KEY TO THE GENERA AND SPECIES OF CYPRINODONTIDAE REPORTED FROM LIBERIA 
la. The membrane connecting upper and lower lips is joined te the lower lip 
on the same general level as front margin of lower lip and not below the 
posterior angle of lower lip; lower lip curved upward, the contour of lower 
jaw from lateral aspect rounded; snout short, abeut 144 in postorbital 
length of head, and 144 to 2 in interorbital space. 
2a. Dorsal rays 12 or 13; anal 15 to 16; scales 30 to 32; origin of dorsal 
fin over 4 to 6 anal rays; pectoral rays about 16 to 18; gill rakers on 
lower half of first arch about 11; pelvies short, not reaching anal fin 
and contained 114 to 144 in postorbital part of head; eye contained 1% 
in interorbital space and 214 in postorbital part of head; depth 6 to 
614 in total length; upper base of caudal fin with a blackish speck or 
spot en females, obscured on males because of dark color; fins blackish 
on breeding males, pale and spotted on females; lower edge of caudal of 
males pale______________._.___._._._Aphyosemion liberiensis (Boulenger) 
2b. Dorsal rays 7 to 10; anal 10 to 138. 
8a. Pectoral rays 16 to 18; dorsal rays 9 or 10; anal 12 or 13; scales 29 or 30; 
depth 314 to 414 and head 3% to 3% times in total length; eye 3%4 to 
4 times in head and two in interorbital space; olive or brownish above, 
yellowish white below, sides with carmine spots, more or less arranged 
in lengthwise streaks (after Boulenger). 
Aphyosemion calliurus (Boulenger) 
8b. Pectoral rays 10 or 11; dorsal rays 7; anal 10 or 11; scales 22 or 23; origin 
of dorsal over the 4th or 5th anal ray; gill rakers about 12 to 14; a 
fine black line along mid-axis. Color.—Plain. 
Micropanchax macrurus manni, new subspecies 
1b. The membrane connecting upper and lower lips is joined to the lower lip con- 
siderably below the angle at posterior part of lower lip and below the gen- 
eral level of the lip anteriorly ; lower lip but slightly curved upward giving 
a pointed aspect to snout when viewed from the side; snout longer, con- 
tained about 1 to 144 in postorbital part of head and 1 to 14% in interorbital 
space. 
