56 HETEROMERA [| Rhinosimus 
what dilated at apex ; antenne inserted at about middle of rostrum 
pitchy with base red ; thorax rather feebly cordiform, deeply and not 
very closely punctured ; elytra with distinct rows of punctures, alter- 
nate interstices with rows of punctures placed rather widely apart; legs 
reddish-testaceous ; under-side red, pitehy red or pitchy. L. 2-8 mm. 
Under bark, in dead twigs, moss, &c.; often by sweeping and beating; common 
and generally distributed throughout England and Wales; Scotland, Solway, Forth, 
Tay, and probably all or nearly all the districts; Ireland, Dublin, Armagh, Belfast, 
und probably general. 
MYCTERINA. 
This is a small tribe, whose composition is uncertain; several authors 
include under it the genus Lacconotus, which differs from Mycterus in 
not having the head prolonged into a rostrum ; the latter genus forms a 
very strong connecting link between the Heteromera and the 
Rhynchophora ; any one who was not acquainted with the structural dif- 
ferences would at once regard M. curculionoides as a weevil very near the 
genus Larinus, which it further resembles in having the upper surface 
covered with a yellowish pollen-like pubescence ; the tribe has been 
variously assigned to the Pythide, GEdemeride, and Melandryide. I have 
here placed it provisionally under the former ; the point is not im- 
portant as far as the British fauna is concerned, as our single species is 
doubtfully indigenous. 
MYCTERVUS, Clairville. 
This genus contains seven or eight species, of which four are found in 
Europe, and the remainder in North and Central America; it is, as 
before stated, as far as outward appearance goes, extremely closely re- 
lated to the Curculionids, with which it is further connected by the 
form of the intermediate coxz and scutellum; it is however separated, 
of course, from them by the heteromerous tarsi, and further, to a less 
extent, by the filiform antennz and the buccal organs; the larve pro- 
bably live in the roots and stems of the Carduacew and Umbellifercee, on 
which the perfect insects are found. 
TM. curculionoides, F. Elongate oval, convex, black, covered 
with close greyish, yellowish or reddish pubescence, and besides with a 
yellowish fugitive pollen-lke pubescence, which is renewable during 
life ; head produced into a strong broad rostrum, eyes moderate, 
slightly projecting, antennz 11-jointed, inserted at some distance in 
front of eyes, third joint elongate, last joint apparently divided into 
two; thorax transverse with sides subparallel behind, and rounded and 
narrowed in front, broadly bisinuate at base where it is broadest ; the 
upper surface is closely, distinctly, and shallowly punctured, and there 
is a trace of a central furrow at all events at base; scutellum large ; 
