SERIAL CONNECTION AMONG ANIMALS. 65 



view. In the first place, their zoological relations to one 

 another are expressed by the various combinations of the 

 structures of their legs ; some having four legs, and these 

 are the most numerous, others only two legs, which are 

 always the hind legs, and others no legs at all. Again, 

 these legs may have only one toe, or two, three, four, or 

 five toes, and the number of toes may vary between the 

 fore and hind legs. The classification adopted here is 

 based upon these characters. In the second place, the 

 geographical distribution is noticed. But it is at once 

 apparent that the home of these animals stands in no 

 relation whatsoever to their zoological affinities. On the 

 contrary, the most remote genera may occur in the same 

 country, while the most closely related may live far 

 apart. 



GENERA WITH FOUR LEGS. 



With/ve toes to the fore feet as well as to the hind feet : Trojndophorus, 1 

 species, Cochin-China. Scincus, I sp., Syria, North and West Africa. 

 Sphenops, 1 sp.. Egypt. Diploglossus, 6 sp., West Indies and 

 Brazils. Ampltiglossus, 1 sp., Madagascar. Gongylus, with 7 sub- 

 genera: Gongylus, 2 sp., Southern Europe, Egypt, TenerifFe, Isle 

 de France; Eumeces, 11 sp., East and West Indies, South America, 

 Vanikoro, New Ireland, New Guinea, Pacific Islands ; Euprepes, 

 13 sp., West Coast of Africa, Cape of Good Hope, Egypt, Abyssinia, 

 Seychelles, Madagascar, New Guinea, East Indies, Sunda Islands, 

 Manilla ; Plestiodon, 5 sp., Egypt, Algiers, China, Japan, United 

 States ; Lygosoma, 19 sp., New Holland, New Zealand, Java, New 

 Guinea, Timor, East Indies, Pacific Islands, United States ; Liolo- 

 pisma, 1 sp., Mauritius and Manilla; Tropidolopisma, 1 sp., New 

 Holland. Cydodus, 3 sp., New Holland and Java. Trachysaurus, 

 1 sp., New Holland. Ablepharus, 4 sp., South-eastern Europe, New 

 Holland, Pacific Islands. 



With five toes to the fore feet and four toes to the hind feet: Campsodacty- 

 lus, 1 sp., Bengal. 



With four toes to the fore feet and five toes to the hind feet : Heteropus, 3 

 sp., Africa, New Holland, Isle de France. Gymnophthalmus, 1 sp., 

 W. Indies and Brazil. 



