152 



ZOOLOGY. 



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

 Mr. Westwood's nomenclature of the Tetramera, of which 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 sub-tribes by "Westwood (sub-division by Shuckard, and section by 

 Stephens), and each division of the sub-tribe is named stirps by Westwood 

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

 as follows : 



Section. 



Tribe. 



Sub-tribe. 



Stirps. 



" Chilopodomorpha, 



Pentamera, •> 



. Chilognathomorpha, 



( Geodephaga. 

 ( Hydradephaga. 

 ( Philhydria. 

 i Necrophaga. 

 ( Brachelytra. 

 ( Clavicornia, 

 I Lamellicornia. 

 I Macrosternia. 

 ( Aprosternia. 



Heteromera, Thysanm'omorpha, j lacieiia. 



( Atrachelia, . . . j Irisomata. 



I Melasomata. 



SHelminthoraorpha, j Rhyncophora. 



Trimera, Anoplurimorpha, 



r Adephaga, 



Rypophaga, 



1* Cordylocerata, 



Serricornia, . 



( Longicornia. 



iPhytophaga. 

 Scaphisomata. 



The Coleoptera of the section Pentamera have five articulations to each 

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

 the order. In some of the Hydradephaga and BracJielytra 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, Ca.rnassiers^ 

 Brachelytra., Serricornia., Clavicornia., Palpicornia., and Lamellicornia. 

 The first corresponds to the Adephaga of Clairville, which include the 

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

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

 Hydradephaga., with the two families Dyticidce and GyrinidcB. 



The Adephaga have slender antennaB and a pal23iform bi-articulate galea 

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

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

 armed with a hook. 



JP^am. 1. Cicindelidce. In this family the antennae are slender, the apex 



of the maxillae 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 



