152 ZOOLOGY. 
manner according to the forms of the larve. 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 tbe by Shuckard). These divisions may be tabulated 
as follows : . 
Section. Tribe. Sub-tribe. Stirps. 
r Adephaga, . . Teens ‘ 
: Ty dradephaga. 
( Chilopodomorpha, (i aa 
Rypophaga, . Necrophaga. 
Brachelytra. 
( Clavicornia. 
Lamellicornia. 
Macrosternia. 
Aprosternia. 
SR Oe Trachelia. 
phe RANG Us Trisomata. 
Melasomata. 
Sean MESA ates se 2 {a 
PENTAMERA, | 
j Cordylocerata, . 
\ Chilognathomorpha, 
Serricornia, . . : 
Herrromersa, Thysanuromorpha, 
TETRAMERA, Longicornia. 
A ipcieebag nelle . ( Phytophaga. 
TRIMERA, Anoplurimorpha, . 
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 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, 
| Brachelytra, Serricornia, Clavicornia, Palpicorma, 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 Cicindelide and Carabide ; and the latter the 
Hydradephaga, with the two families Dyticide and Gyrinide. 
The Adephaga have slender antenne and a palpiform bi-articulate galea 
to the maxille in addition to the ordinary maxillary and labial palpi. The 
maxille have a row of stiff bristles along the inner margin, and the apex 
armed with a hook. 
‘am. 1. Cveindelide. In this family the antenne are slender, the apex 
of the maxille 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 
