OF INSECTS. 
327 
Fam. 1. (Culicidce .) — Sucker with six lancets. 
Fam. 2. ( Tipulida .) — Sucker with two lancets. 
Division II. (Brachocera.) — Antennae having three dis- 
tinct joints; palpi with one or two joints. 
Subdivision I. (Hemckceta .) — Sucker with six lancets. 
Fam. Tabanidas. 
Subdivision II. ( Tetrachata .) — Sucker with four lancets. 
A. (Fam. Canomyida: , Beridee, StratiomydfB .) 
b. (Fam. Mydusidce , AsUtdce, Hybotidw , Empidce , He- 
ropidce , Nemestrinidce , Bombyliidce , Anthracidce. 
c. (Fam. Tlierevidce , Leptida, Dolichopidce , Syrphidce. 
Subdivision III. (. DicJueta .) — Sucker with two lancets, 
containing CEslrus^ Conops , Aftwctf, §■<?. $-c., with nume- 
rous divisions and subdivisions. 
Section II. (Pw/wpam; Homaloptera, Leach.) — Head im- 
mersed in the front of the thorax ; sucker enclosed in two 
valves; claws with many teeth. The transformation to 
the pupa state undergone in the body of the parent fly. 
Fam. 1. ( HippoboscidcB . ) — Head frontal. 
Fam. 2. (Nyctcribiida .) — Head dorsal. 
Of the few examples, native and exotic, selected 
to illustrate the general appearance of the insects of 
this order, we shall first refer to 
CTENOPIIORA PECTINICORNIS. 
Plate XXXIV. Fig. 1. 
Meigeitt Curtis . Tipula pectinicornis, linn. Tip. nigro-crocea, 
Dc Geer . Tip. variegata. Fair. Tip. splendor. Hands. 
In this genus the antennae are beautifully pectinated 
in the male, but simple in the female. It contains 
seven or eight British species, most of which are 
among the most ornamented of all the Tipulidse. 
The larvae appear to inhabit decayed trees. The 
species figured occurs not unfrequently in most parts 
