336 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY — IV. 



crossbars, each about as broad as a scale; females with aliout as mauy 

 narrow black bars, which do not extend on the back or belly ; scales 

 punctate. Head 3| ; depth 4. D. 11 ; A. 9 ; scales 33-11. L. 2^ inches. 

 (Gilnther.) Atlantic coast of United States, not very common. 



( Hydrargi/ra nigrofasciata Le Sueur, Jouru. Acad. Nat. Sci. Pbila. 1817, i, 133 ; 

 Storer, Fish Mass, 295; Giiutlier, vi, 325.) 



ff. Males with silvery spots and bars; females nearly plain olivaceous; fins spotted. 



343. F. heteroclitus (L.) Giinther. — Common KUUfi.sh; Mummicltog ; Salt-water 

 Minnow. 



Body thick-set, short and deep ; anteriorly broad, posteriorly com- 

 I)ressed, the back elevated ; head rather short, blunt, broad and flat on 

 top; eye moderate, about equal to snout, about half tlie width of inter- 

 orbital space and one-fifth of the length of the head ; fins moderate, the 

 dorsal inserted in males midway between snout and tip of caudal; in 

 females farther back ; oviduct attached to anterior ray of anal fin, its 

 opening near the tip of the ray; teeth in broad bands, pointed, the 

 outer series enlarged. Coloration in males dark dull green, the belly 

 more or less orange yellow; sides with numerous quite narrow ill- 

 defined gftlvery bars made up of spots, most distinct posteriorly; besides 

 these are numerous conspicuous white or yellow spots, irregularly scat- 

 tered ; vertical fins dark, with numei ous small round pale spots ; dorsal 

 often with a blackish spot on its last ray; anal and ventrals yellow 

 anteriorly; under side of head yellow; young males sometimes with 

 dark bars. Females nearly plain olivaceous, lighter below, without 

 spots or bars, the scales finely punctate ; sides sometimes with a few 

 faint vertical shades. Head 3f ; depth 3f. D. 11 ; A. 11 ; scales 3G-13; 

 L. 3-5 inches. Maine to Mexico, everywhere very common in brackish 

 waters, the most abundant of our Cyprinodontidw. Southern specimens 

 perhaps reach a larger size (var. grandis) than northern, and some speci- 

 mens (var. pisGulentus) have the head wider than usual. 



{Cohitls heterocliia L. Syst. Nat.: Esox phcitlentus, Mitch. Trans. Lit. &. Phil. Soc. N. 

 Y. i, 441 • Funditlus pisculcntuH oi most American authors: Fundulus zebra Dekay, N. Y. 

 Fauna, Fish. 218, 1842: Fundulus yrandis Baird & Girard, Proc. Acad. Nat. Sci. Phila. 

 1853, 389: Fundulus grandis Girard, U. S. Mex. Bound. Surv. Ichth. 69: F'undulus florl- 

 densis Girard, Proc. Acad. Nat. Sci. Phila. 1839, 157: Fundulus piseulentus Storer, Fish. 

 Mass. 294; Giinther, Cat. Fish. Brit. Miis. vi, 318.) 



** Dorsal fin beginning directly above or slightly behind anal. {Xcnisma* Jor.) 



* Jordan, Bull. Butf. Soc. Nat. Hist. 1876, 142: type Xenisma steUifcra Jov. (^svtdjuoc, 

 a surprise.) 



