COLEOPTERA, 367 
upon it, and by a see-saw motion of their head precipitate it to the 
bottom of the hole. Thither also they quickly retreat on the least 
intimation of danger. If they are too confined, or the soil is not of 
a proper nature, they construct a new habitation elsewhere. Such 
is their voracity that they devour other larvae of the same species, 
which have taken up their abode in their vicinity. When about to 
change their tegument or to become pupae, they close the opening of 
their cell. Part of these observations were communicated to me 
by the late M. Miger, who had carefully studied many larvae of 
Coleoptera, and discovered several which had escaped the researches 
of naturalists. 
C. campestris, L. ; Panz., Faun. Insect, Germ. LXXXV, ill. 
About six lines in length ; grass-green above ; labrum white, 
slightly unidentated in the middle ; five white points on each 
elytra. Very common in Europe in the spring. 
C. hybrida, L. ; Panz., Ib., iv. Two crescent-shaped spots, 
and a white band on each elytron ; one of the spots at the exte- 
rior base and the other at the end ; suture cupreous. In sand- 
pits, never mixing with the campestris * (aj. The 
C . permanica and some other species have a narrower and 
more elongated form, and seem to constitute a particular sec- 
tion. The germanica, unlike the preceding, does not fly when 
about to be seized but escapes by running, which it does with 
great speed. M. Fischer, in his Entomography of Russia, has 
placed a Brazilian species (^T. margmatus) in the subgenus 
Therates. 
All these species are winged ; but some apterous ones are 
known whose abdomen is also narrower and more oval, and in 
Avhich the tooth of the einargination of the mentum is very 
small and hardly sensible. Such is the one figured in our Hist. 
Nat. des Coleop. d’Europe, I, i, 5, under the name of coarctata. 
Count Dejean, Spec. Gen. des Coleop., II, p. 434, has formed a 
new genus with them, that of Dromica (v). 
Sometimes the body is long and narrow, the thorax elongated, in 
the form of a knot, narrowed before ; the third joint of the two 
anterior tarsi of the males pallet-shaped, and projecting internally ; 
the fourth is inserted exteriorly near its base. 
Ctenostoma, King. — Caris, Fisch. 
This subgenus appears to be peculiar to the intertropical regions of 
* Add, Cicindela sylvalica, L. ; Clairv., Entoin. Helv., II., xxiv., A ; — C. Simula, 
Fab. ; Clairv., Ib., B, b ; — C. germanica, L. ; Panz., Faun. Insect. Germ. VI, v. 
For these and other European species, the Hist. Nat. des Coleop. d’Eur. of Lat. and 
Dej., fascic. I, p. 37, et seq. — and in general the Species Gener. of Count Dcjean ; 
see also the work of Curtis on English Insects. 
(a) Add the C. unicolor, 6-guttala, ruyifrons, patruela, concenfanea, signuta, 
hlanda and the C. lepida, Le C., nov. spec. ined. ; the C. obliquatu, repanda, albo- 
hirta, laticincta, formosa, marginata, cariegata, unipimctata, marginipennis, abdominalis, 
12~gu(tata, flexuosa, obscura, pusilla, punctata, pulchra, and the C. dentmhta hamor^ 
rhoidalis aud spkndida, new species of Heutz. — Exo. Eo. 
