Heledona.] HETEROMERA. 13 
ee or reddish-brown, very dull, with the antenne and legs ferru- 
ginous ; head much narrower than thorax, very closely sculptured, 
antenna ip and stout, much thickened at apex; thorax transverse, 
with the sides rounded and finely notched, very esemely and eranulosely 
punctured, anterior angles sharply projecting ; elytra subparallel, 
gibbose behind, with the elytra sulcate, the sulci being punctured in 
rows, and with the interstices narrowly raised and furnished with rows 
of sete ; legs moderately long, not thickened. L, 2;-3 mm. 
Male with the forehead elevated into a tubercle near eyes, and the 
elypeus projecting in a small tooth on each side at apex. 
In boleti on oak, &c.; very local, but occasionally found in numbers where it 
occurs; Richmond Park, Mickleham, Box Hill, Cobham Park, Merton, Chatham, 
West Wickham, Farnham ; Hampshire ; Bristol ; Norfolk ; Sherwood Forest. 
DIAPERINA. 
In this tribe the body is oval or rounded and winged; the head is 
sunk in the thorax as far as the eyes; the clypeus is entire and mem- 
branous at apex ; the antenne are more or less thickened ; the thorax 
is narrowed in front, and is sharply margined ; the tibie are straight and 
not dilated, and are furnished with small spurs, and the tarsi are 
pubescent beneath; there are seven European genera, of which four are 
represented in Britain ; two, however, are extremely rare ; in form and 
general appearance several of the members of the tribe closely resemble 
certain Chrysomelide, 
I. Posterior tarsi with the first joint comparatively short DIApERIs, Geoff. 
II. Posterior tarsi with the first joint elongate. 
i. Upper surface glabrous. 
1. Posterior coxze not widely distant ; thorax slightly 
emarginate at apex. . ° Bre ere te LATOR MUAS ECs 
2. Posterior coxe widely distant : thorax strongly 
emarginate at apex. . piice Wel) steely 2) POOAPHID EMA, ede: 
ii. Upper surface finely pubescent ; posterior coxe 
slightly distant. . . . « »« » « »« © « « « ALPHITOPHAGUS, Steph. 
DIAPERIS, Geoffroy. 
This genus contains four or five species, of which two, or three, if 
D. bipustulata is considered a separate species, are found in Europe, and 
the other two have been described from North America and Cayenne 
respectively; they are round oval and convex insects with the club of 
the antenne elongate, 8-jointed, all the joints except the last being 
transverse ; the tarsi are short with the first joint only a little longer than 
second, and the prosternum is very short. 
The larva and pupa of D. boleti are described and figured by Schiddte (L.c. pp. 547, 
585, pl. viii. fig. 14, 23); the larva is white with the head and legs ferruginous 
and the forehead fuscous, and is entirely membranous except the head and legs; it 
very much resembles the larva of Bolitophagus, but is rather broader (being only six 
