Family XI. Pceciliid,e. 155 



146. Mollienesia formosa (Girard). 



Limia formosa Girard, Proc. Acad. Nat. Sci. Phila., 1859, 115; 

 Palo Alto, Mexico. 



Mollienesia formosa Giinther, Cat., vi, 1866, 349. 



Mollienisia formosa Jordan & Evermann, Bull. 47, U. S. Nat. 

 Mus., 1896, 699. 



Northeastern Mexico. 



Head 3^; depth 3X; D. 12 or 13; A. 10. Body rather stout; 

 snout short; dorsal in male longer than high, its first ray about 

 opposite anal; female with dorsal nearly as high as long, the anal 

 opposite its front. 



Color olivaceous; scales with brown spots; dorsal fin with trans- 

 verse series of blackish spots; other fins plain. (Girard.) 



147. Mollienesia latipinna Le Sueur. 



Mollienisia latipinna Le Sueur, Jour. Acad. Nat. Sci. Phila., 182 1, 

 3; New Orleans: Garman, Memoirs Mus. Comp. Zool., 1859, 

 50, pi. v, fig. 1, teeth; pi. viii, fig. 12: Jordan & Evermann, 

 Bull. 47, U. S. Nat. Mus., 1896, 699: Jordan & Snyder, Bull. 

 U. S. Fish Comm., 1900, 131; Lagoons near Tampico. 

 Poscilia lineata Girard, Mex. Bd. Sur., 70, pi. xxxv, figs. 9-11, 



1859; Rio Grande, near Brownsville, Texas. 

 Limia matamorensis Girard, Proc. Acad. Nat. Sci. Phila., 1859, 



116; Matamoras, Tamaulipas. 

 Lowland streams and lagoons, from Yucatan to South Carolina. 

 (La Vega, Tamaulipas, E. W. Nelson.) 



Head ^A (?) to 4 (5); depth 2% (?) to 3 (i); D. 13 to 16; 

 A. 8; scales 9 or 10-26. Body oblong, much compressed in males, 

 nearly of equal height from dorsal backward ; greatest height of body 

 about }i more than that of caudal peduncle; females with a more 

 distended abdomen and more slender caudal peduncle; head very 

 small, depressed, not narrowed forward; mouth very small, vertical; 

 teeth small, movable, in a band, the outer series the larger; eye 3^3 to 

 $}£ in head; dorsal fin in males enormously high; the longest ray 

 2%. in body; dorsal in females low, longest ray about x% in head; 

 origin of dorsal in front of that of anal, its origin to base of caudal 

 2} times to tip of snout; anal fin (?) very small, that of male 

 modified into an intromittent organ; caudal fin rounded; intestinal 

 canal elongate, about 2% times the length of the fish. 



Color of male, light olive green marbled with darker and spotted 

 with pale green ; each scale on back and sides with an oblong, blackish 

 spot, these forming continuous lengthwise stripes; head dusky above; 



