334 CYPRISrODONTIDJE. 



of the mandible firmly united. Snout not produced, with the lower 

 jaw more or less prominent. Both jaws with a band of teeth, those 

 of the outer series being the strongest and conical. Scales rather 

 large. Origin of the anal fin more or less in advance of that of the 

 dorsal. Anal fin of the male modified into an intromittent organ 

 and much advanced. Intestinal tract but Httle convolute. Carni- 

 vorous. 



West Indies ; southern parts of North America. 



1. Gambusia punctata. 



Poey, I. c. p. 384, lam. 32. figs. 5-9. 

 B. 6. D. 10. A. 11. V. 6. L. lat. 35. Vert. 13/20. 



The height of the body is contained thrice and three-fourths in 

 the total length (without caudal), the length of the head four times 

 and one-sixth. Lower jaw projecting beyond the upper. The eye 

 is one-third of the length of the head, and one-half of the width of 

 the interorbital space. In the female the origin of the dorsal fin is 

 midway between the extremity of the caudal and the front margin 

 of the orbit, and opposite to the seventh or eighth anal ray. In the 

 male the origin of that fin is in the middle of the total length. Anal 

 process of the male shorter than the head. Pectoral fins not quite 

 reaching as far as the ventrals. The length of the base of the anal fin 

 of the female is one-half of its distance from the caudal. The upper 

 half of the body and the dorsal fin with series of black dots. (Poeij.) 



Cuba. 



2. Gambusia puncticulata. 

 Poeij, I. c. p. 386, lam. 31. figs. 0-7. 

 B. 6. D. 9. A. 11. V. 6. L. lat. 30. Vert. 13/19. 



The height of the body is contained thrice a^id two-thirds in the 

 total length (without caudal), the length of the head four times. 

 Lower jaw projecting beyond the upper. The eye is one-thii'd of 

 the length of the head. In the female the origin of the dorsal fin is 

 midway between the extremity of the caudal and the centre of the 

 eye, and opposite to the middle of the anal fin ; in the male the origin 

 of that fin is in tihe middle of the total length. Anal process of the 

 male longer than the head. Pectoral and ventral fins short. The 

 free portion of the tail rather deep. Body with scattered black dots. 

 An oblique blackish band below the eye. Dorsal and caudal fins 

 with transverse series of black dots. (Poey.) 



Cuba. 



3. Gambusia holbrooMi. 



? Heterandria patruelis, Baird 8f Girard, Proc. Acad. -Nat, Sc. Philad. 



1853, p. 390. 

 ? Gambusia patruelis, Girard, U. S. <§• Mex. Bound. Ichthyol. p. 72, 



pi. 39. figs. 1-7, and Proc. Acad. Nat. Sc. Philad. 1859, p. 121. 

 Gambusia holbrookii, Girard, Proc. Acad. Nat. Sc. Philad. 1859, p. Gl. 



D. 8-9. A. 9-10. V. 6. L. lat. 32. L. transv. 8. 



The height of the body is contained thrice and one-half in the 



