152 



ZOOLOGY. 



manner according to the forms of the larvae. There is a discrepancy in 

 Mr. Westwood's nomenclature of the Tetramera, of wliich he admits the 

 three ordinary groups, but applies to them the name of sub-sections, which 

 he does not apply in the other sections. The tribes are divided into groups 

 termed suh-trihes by Westwood {sul-division by Shuckard, and section by 

 Stephens), and each division of the sub-tribe is named stb'ps by Westwood 

 and Stephens (and trihe by Shuckard). These divisions may be tabulated 

 as follows : 



Section. 



Tribe. 



Sub-tribe, 



C Adephaga, 



' Chilopodomorpha, \ 



Pentameea, ^ 



Kypophaga, 



. Chilognathomorpha, 



Heteeomeea, Thysanuromorpha, 



1 Cordylocerata, 



Serricornia, . 



Stirps. 



) Geodepliaga. 

 ( Hydradephaga. 

 ( Philhydria. 

 i J^ecrophaga. 

 ( Brachelytra. 

 j Clavicornia. 

 I Lamellicornia. 

 j Macrosternia. 

 \ Aprosternia. 

 Trachelia. 



Atrachelia, . . . j Insomata. 



i Melasomata. 



r Helminthomorpha, j Rhyncophora. 



Tetramera, M \ Longicornia. 



( I Phytophaga. 



Teimeea, Anoplurimorpha, < 



\ Scaphisomata. 



The Coleoptera of the section Pentamera have five articulations to each 

 tarsus, and they are the most perfect and thejnost numerous members of 

 the order. In some of the Hydradephaga and Brachelytra the tarsi are 

 anomalous, and in the latter there are dimerous forms, and such as have 

 four articulations to the anterior and medial feet, and five to the posterior 

 ones. Latreille divides the Pentamera into six families, Carnassiers., 

 Braclielytra., Serricornia.^ Clavicornia.^ Paljpicornia., and Lamellicornia. 

 The first corresponds to the Adcjpliaga of Clairville, which include tjie 

 predaceous land and water families, the former being the Geodepliaga., 

 containing the two families Cicindelidm and Carahidce ; and the latter the 

 Hydradepliaga., with the two families DyticidcB and Gyrinidce. 



The Adephaga have slender antennae and a palpiform bi-articulate galea 

 to the maxillse in addition to the ordinary maxillary and labial palpi. The 

 maxillte have a row of stiff bristles along the inner margin, and the apex 

 armed with a hook. 



Fam. 1. Cicindelidce. In this family the antennae are slender, the apex 



of the maxillos is in most cases a movable tooth bent inwards, and in the 



male the anterior tarsi are usually wider than in the female. These insects 



are of a moderate size, often of brilliant colors, the head and eyes rather 



356 



