1. CTPRIXODON. 301 



First Group. CYPRINODONTID^ CARNIVORiE. 



The bones of each mandibulary are firmly united ; intestinal 

 tract short or but little convoluted. Carnivorous or insectivorous. 



1. CYPRINODON* 



Cyprinodon, Lanp. v. p. 486. 



Lebias, Cuv. Regne Anim. 



Aphanius, Nardo, Prodr. Adriat. Ichthyol. pp. 17, 23. 



Micromugil, Gtdia, Tentamen Ichthyol. Melit. p. 11. 



Cleft of the mouth small, developed laterally and horizontally ; 

 mandible short, with the bones of each side firmly united. Snout 

 short. Teeth of moderate size, notched, in a single series. Scales 

 rather large. Origin of the anal fin behind that of the dorsal in 

 both sexes, both fins being larger in the male than in the female. 

 Intestinal tract but slightly convoluted. 



Fresh vraters of the Mediterranean region ; North America. 



The species may be arranged geographically thus : — 



a. Species of the Old World, p. 302. 

 /3. Species of the New World, p. 305. 



* 1. Cyprinodon elegans, Baird 8f Girard, in Proc. Acad. Nat. Sc. Philad. 

 1853, p. 389, and in U. S. 8f Mex. Bound. Ichthyol. p. 66, pi. 37. 

 figs. 1-7. —Rio Grande del Norte. 



2. gibbosus, Baird ^' Girard, in Proc. Acad. Nat. Sc. Philad. 1855, 



p. 390, and in U. S. # Mex. Bound. Ichthyol. p. 67, pi. 38. figs. 1-7.— 

 Texas. 



3. macularius, Baird ^ Girard, Proc. Acad. Nat. Sc. Philad. 1853, 



p. 389, and in U. S. ^ Mex. Bound. Ichthyol. p. 68, pi. 37. figs. 8-11.— 

 Rio San Pedro. 



4. californiensis, Girard, Proc. Acad. Nat. Sc. Philad. 1859, p. 157. — 



San Diego. 



5. exiraius, Girard, I. c. p. 158. — Chili ua-hna River. 



6. Aphanius fasciatus, Nardo, Prodr. Adriat. Ichth. pp. 17 & 23, or Isis, 



1827, p. 438 ; and Boirio, Dizion. Diaktfo Vcnez. 1829, p. 438.— 

 Brackish water near Venice. D. 12. A. 12. 



7. Micromugil timidus, Gulia, Tent. Ichthyol. Melit. p. 11 : "Dorso plum- 



beo, abdomine argenteo lucido, f'asciis obscuris longitudinalibus 

 ornato." — Malta. Vernacular name : Buzak. 



8. macrogaster, Gulia, I. c. : " Corpore platineo, pinnis omnibus fla- 



. vescentibus." — Malta. 



9. Trifarcius riverendi, Poey, Mem. Cub. ii. p. 306. — Cuba. 



10. Adinia multifasciata, Girard, Proc. Acad. Nat. Sc. Philad. 1859, p. 117; 

 and in U. S. 8f Mex. Bound. Ichth. pi. 38. figs. 12-14 (as Limia poeci- 

 loides, fem.) from Texas. — The characters assigned to the genus Adinia 

 are quite insufficient to distinguish it from Cyprinodon or Fundulus; 

 so that, imtil the typical specimens are reexamined, it must remain 

 uncertain whether this fish ought to be referred to one of the genera 

 named, or whether it is really the type of a distinct genus. 



