450 GEOGRAPHICAL ZOOLOGY. [pakt iv. 



but a few species of Bclone and Hemirajnjjhiis are found in rivers 

 in various parts of the world. 



Family 73.— CYPEINODONTID^. (20 Genera, 106 Species.) 



" Fresh- water lishes, covered with scales, the sexes frequently 

 differing, mostly viviparous." 



Distribution. — Southern Europe, Asia, Africa and North 

 America, but most abundant in Tropical America. 



The distribution of the genera is as follows : — 

 Cyprinodon (11 sp.), Italy, North Africa and Western Asia to 

 Persia, also North America from Texas to New York ; Fitzroya 

 (1 sp.), Montevideo ; Characodon (1 sp.). Central America ; Tcllict 

 (1 sp.), Alpine pools of the Atlas : Limnurgus (1 sp.), Mexican 

 plateau; Lucania (1 sp.), Texas; Haplocliihis (18 sp.), India, 

 Java, Japan, Tropical Africa, Madagascar, and the Seychelle 

 Islands, Carolina to Brazil, Jamaica ; Fundidus (17 sp.). North 

 and Central America and Ecuador, Spain and East Africa ; 

 Rivulus (3 sp.), Tropical America, Cuba and Trinidad ; Orestias 

 (6 sp.). Lake Titacaca, Andes ; Jcnynsia (1 sp.), Eio Plata ; Pscn- 

 doxi2)lio2')ho7'us (2 sp.). Central America ; Belonesox (1 sp.), Cen- 

 tral America; Gamhusia (8 sp.), Antilles, Central America 

 and Texas ; A}iahlc2)s (3 sp.). Central and Equatorial America ; 

 Fcecilia (16 sp.), Antilles, Central and South America ; Mol- 

 lienesia (4 sp.), Louisiana to Mexico; Flatypoecilus (1 sp.), 

 Mexico; Girardinus (10 sp.), Antilles and South Carolina to 

 Uruguay; Lepistcs (1 sp.), Barbadoes, 



Family 74— HETEEOPYGII. (2 Genera, 2 Species.) 



" Fresh- water fishes, with posterior dorsal fin, and very smaP 

 scales." 



DiSTKiBUTiox. — Fresh waters of the United States. 



AmUyoims (1 sp.) is a blind fish found in the caverns of Ken- 

 tucky ; while Chologastes (1 sp.), which only differs from it in 

 having perfect eyes, is found in ditches in South Carolina. 



