66 ESSAY ON CLASSIFICATION. 



With four toes to the fore feet and four toes to the hind feet : Tetradacty- 



lus, 1 sp., New Holland. The genus Chalcides, of the allied family 



Chalcidioids, exhibits another example of this combination. 

 With/<rar toes to the fore feet and three toes to the hind feet : No examples 



known of this combination. 



With three toes to the fore feet and four toes to the hind feet : Not known. 

 With three toes to the fore feet and three toes to the hind feet: Hemiergis, 



1 sp., New Holland. Seps, 1 sp., S. Europe and N. Africa. Nessia, 



1 sp., Origin unknown. 



With three toes to the fore feet and two toes to the hind feet : Not known. 

 With two toes to the fore feet and three toes to the hind feet: Ileteromeles, 



I sp., Algiers. Lerista, 1 sp., New Holland. 

 With two toes to the fore feet and two toes to the hind feet: Chelomeles, \ 



sp., New Holland. 

 With two toes to the fore feet and one toe to the hind feet: Brachymeles, 1 



sp., Philippine Islands. 

 With one toe to the fore feet and two toes to the hind feet : Brachystopus, 



1 sp., South Africa. 

 With one toe to the fore feet and one toe to the hind feet: Evesia, 1 sp., 



Origin unknown. 



GENERA WITH ONLY TWO LEGS. 



No representatives are known with fore legs only ; but this structural 

 combination occurs in the allied family of the Chalcidioids. The represen- 

 tatives with hind legs only present the following combinations: 



With two toes: Scelotes, 1 sp., Cape Good Hope. 



With one toe: Propeditus, 1 sp., Cape Good Hope and New Holland. 



Op/tiodes, 1 sp., South America. 



Ilysteropus, 1 sp., New Holland. 



Lialis, 1 sp., New Holland. 



Dibamus, 1 sp., New Guinea. 



GENERA WITHOUT ANY LEGS. 



Anguis, 1 sp., Europe, Western Asia, Northern Africa. 

 Ophiomorus, 1 sp., Morea, Southern Russia, and Algiers. 

 Acontias, 1 sp., Southern Africa, Cape Good Hope. 

 Typhlina, 1 sp., Southern Africa, Cape Good Hope. 



Who can look at this diagram and not recognize, in its 

 arrangement, the combinations of thought ? This is so 

 obvious, that while considering it one might almost over- 

 look the fact, that, while it was drawn up to classify ani- 



