EXTERNAL ANATOMY OF INSECTS. 453 
its various configurations :—in the bees it is very long, 
in most other insects very short. Though frequently 
simple and undivided, in many cases it presents a diffe- 
rent conformation. Thus in the saw-flies it terminates in 
three equal lobes?; in Stomis and Geotrupes in three 
unequal ones, the intermediate being very short®; in 
Carabus, in three short teethe; in Lezstus it repre- 
sents a trident‘; in the wasp it is bifid, each lobe being 
tipped with a callosity*; in Lepidiota Stigma it is 
bipartite ; in Elaphrus, the analogue of the tiger-beetles, 
it terminates in a single tooth or point; in the aquatic 
beetles, Dytiscus L., it is quadrangular and without 
teeth’; in some Jchneumonide it is concavo-convex, 
and forms a demitube ; and in others it is nearly cylin- 
drical *. 
In many insects it has no azrs, but in the Predaceous 
beetles it generally terminates in a couple of bristles ‘. 
In the hive- humble- and other bees, it is extremely 
hairy *; a circumstance which probably enables it more 
effectually to despoil the flowers of their nectar. In Geo- 
trupes stercorarius, the common dungchafer, and Lepi- 
diota Stigma \ately mentioned, the lobes of the tongue 
are fringed with incurved hairs'; and in shana it is 
hairy on the upper side, each hair or bristle crowning a 
* Kirby Mon. Ap. Angl. i. t. xiv. (1) 2. 6. 
b PratE XXVI. Fic. 24. e’. © Clairv. ubi supr. t. xx. c. 
4 Prate XXVI. Fic. 28. e’. 
© Kirby wdi supr. fig. (8) 1. ec. The lateral pieces in the tongue 
in Vespa (Ibid. cc.) have been regarded as lobes of it, but they are 
rather Paraglosse. 
f Prate XXVI. Fic. 29. e’. ® Clairv. ubi supr. t. XXX. c. 
" Kirby «di supr. no. 2. f. 1, 3. 1 Prate XXVI. Fic. 24. 6. 
k Kirby udi supr. t. x. Apis. c. 2. 6. f. 5. t. xii. neut. f. 2, 3. t. xilt. 
fag ey Ss 1 Prats XXVI. Fic. 26, 29. 
