' 49. CYPEINODONTID^ FUNDULUS. 331 
little shorter than snout; olivaceous, sil\*ery below. Head 3; dej;)th 
2J. D. 11; A. 10; scales 25-10. “America.” (Gionther.) 
(Giuitlier, vi, 30G.) 
158.-FUIVDiri.lJS Lac4pecle. 
KilUJishes. 
{Hydrargyra Lac^iiede: Xenisma Jordan.) 
(Lac6pi>de, Hist. Nat. Poiss. v, 37, 1803; type FundUlus viudfisli JuSLc6ph(le — Colitis 
heteroclita L.) 
Body rather elongate, little elevated, compressed behind. Month 
moderate. Jaws, each with two or more series Of pointed teeth, usually 
forming a narrow baud. Bones of the maudiule firmly united. Scales 
moderate. Branchiostegals 4-0. Preopercle, preorbital, and mandi- 
ble with mucous pores. Dorsal and anal fins similar, moderately devel- 
oped or rather large, the dorsal usually inserted in front of the anal. 
Ventrals well developed. Air-bladder present. Sexes differing in 
color, size, and development of the fins, the anal fin in the male nor- 
mal. Intestinal canal short. Species very numerous, mostly Ameri- 
can, inhabiting fresh waters and arms of the sea. They are the largest 
in size of the Cypriuodouts, and some of them are very brightly colored. 
(Latin fundus^ bottom, the supposed abode of the '•‘‘Fimdulus mudfish.^'’) 
The species may be divided as follows: 
* Dor.sal fiu beginning in advance of anal, 
t Branchiostegals 6. (Hydrargyra Lacdp^de.) 
a. Males with dark cross-bars and a black dorsal spot ; females with longitndinal 
stripes majalis, sioampinus. 
aa. Males and females with dark cross-bars similis, zebra. 
aaa. Males without sharp markings, the scales rough in spring ; females plain. 
j)urvipinnis. 
it Branchiostegals 5. (Fuxdulus.) 
b. Dorsal long, its rays l(i or 17 ; body with round black spots, at least in the 
male seminolis, 
bb. Dorsal moderate, its rays 10-14. 
c. Scales rather small, 40 or more in a longitudinal series. 
d. Cross-bars if present, black diaphanus, confluentus. 
dd. Cross-bars silvery. 
e. Teeth small, in a baud vienona. 
ee. Teeth in ahoiit two series, the outer enlarged adinia. 
cc. Scales large, less than 40 in a longitudinal series. 
/. Males with 9 or 10 silvery cross-bars; females with black bars; fins 
plain nigrofasciatus. 
ff. Males with silvery spots and bars ; females nearly plain olivaceous, 
or barred Avith black lieteroclitus. 
** Dorsal fin beginning above or slightly behind anal ; fins high. (Xenisma Jor.) 
g. Branchiostegals 5 ; spots in regular series catenatus. 
gg. Branchiostegals!; spots irregular stellifer. 
