STATES OF INSECTS. ( Larva.) 123 
substance to be masticated. Ina figure given by Reau- 
mur of the under side of the head of another lepidopte- 
rous larva (Erminia Pomonella), the maxillz consist of 
a single joint, and appear to be crowned by chelate pal- 
pi*: a circumstance which is also observable in that of a 
common species of stag-beetle (Dorcas parallelipipedus), 
the weevil of the water-hemlock (Zirus paraplecticus »), 
and other insects. In general the maxille of larvee are 
without the lobe or lobes discoverable in those of most 
perfect insects, this part being usually represented by a 
kind of nipple, or palpiform jointed process, strictly ana- 
logous to the interior maxillary palpi of the predaceous 
coleoptera; but in most of the lamellicorn beetles the 
lobe exists in its proper forms, as it does likewise in that 
of the capricorn-beetle before noticed (Callidium viola- 
ceum*). In the former instance, it is armed with spines or 
claws; but in the latter it is unarmed, and rounded at the 
end. In the larva of Cicindela campestris, the base of the 
maxilla runs in a transverse direction from the mentum, 
to which, as is usually the case, it is attached. From this 
at right angles proceeds the lobe, from the outer side of 
which the feeler emerges; and the inner part terminates 
in an unguiform joint, ending in two or three bristles. 
The structure in the larvee of water-beetles is different, for 
they appear to be without maxillze*; but the case really 
seems to be, that these organs are represented by the 
first joint of what M. Cuvier calls their palpi‘ ; from 
which proceed the real palpi, the interior one being very 
* Reaum. il. ¢. 40. f. 4. b De Geer v. 229. 
© Ibid. iv. ¢. xi. f. 16. pp. 4 Linn. Trans. v. t. xii. f. 10. 
© Cuvier Anat. Comp. iii. 323. 
* De Geer iv. ¢. xv. f. 9.64. The exterior and interior palpi are 
both represented in this figure. 
