334 
COLEOPTERA. 
occur in India. Agrypnus (13 spp.) includes the large forms, A. fusci- 
pes, Fabr. (fig. 210), being the common large black click-beetle of 
the plains. Lacon (44 spp.) is a common genus, with several plains 
species, smaller forms, with somewhat expanded prothorax. Camp- 
sosternus (30 spp.) are large insects of metallic colouring, usually 
green, abundant in hill forests and of striking appearance. The ex- 
tremely common small click-beetles which come so abundantly to light 
in the plains during the rainy months are species of Heteroderes (16 spp.); 
nothing is yet known of their life-history or habits, in spite of the 
numbers in which they occur ; they are wholly nocturnal, the beetles 
found by day in hiding on plants, in bark, under dry leaves, etc. Car- 
diophorus (75 spp.) is widely spread over the plains and abundant; 
C. stolatus, Er., is a small beetle, the elytra chestnut with a black fascia, 
also very abundant at light. Cardiophorus quadrimaculatus , Motsch., 
has yellow blotches on the elytra and is conspicuous. Melanotus (23) 
includes larger dark brown species, M. fuscus, Latr., common in Kanara 
and the hills, other species occurring in the plains. Penia eschscholtzi , 
Cost., is a broader rounder beetle of a bright brown colour with ochreous 
fasciae, common in the Himalayas. PJectrosternus rufus , Lac., is the 
large red beetle with black longitudinal grooves, in which the prothorax 
is small and the antennae conspicuously serrate. Hemiops crassa, Gylh., 
is smaller, the ground colour yellow but equally conspicuously coloured. 
Dicronychid^:. 
These are separated as a distinct family by Schwarz on account of 
the absence of penis. Two species of Dicronychus occur in India, of 
which D. cinnamomeus , Cand., is not uncommon in the plains, a small 
brown beetle with the typical facies of the Elateridce. 
Cebrionid m. 
A single species is described as Indian, Sandalus orientalis , Bourg. 
HETEROMERA. 
A distinct series of beetles, whose classification into families is 
not clear. Four families are easily distinguishable as far as Indian 
forms are concerned. 
