isos. 209 
olytra have also a ligliter pitchy-brown tone, the apical mai-gin of the elytra being 
often pale, and the two apical segments and hinder margin of the ante-penult, 
being always, and the lateral margins of all tho segments sometimes, ferruginous- 
testaceous. It is not nearly so shining as sinuatocolUs, being almost as closely 
punctured and opaque as dcpressus. 
In the male the apparent sexual characters are of very slight devolopmen* ; 
the posterior femora and tibioe exhibiting no increase or curving, and the interme- 
diate femora being very slightly enlarged, with the tibiso scarcely perceptibly 
curved. The male, in fact, is scarcely distinguishable from the female. Beneath, 
the abdomen exhibits the emarginations of sinuatocolUs in a more marked degree. 
From 31. denticollis it may be known by its greater opacity, the dark base of 
its antennifi, the more angulated sides of its thorax, slightly developed male 
characters, &c. 
M. de Saulcy probably does not intend to rank any of his countrymen as super- 
ficial observers ; but he does so by stating that M. Bdlcvoyei has been confounded 
with M. deprcssus (!), on account of the colour of its antennae. 
5. M. DENTICOLLIS, Bock, Er., Kr. Eeadily to be distinguished by the two 
basal joints of its antennae being yellow (the second joint being, however, sometimes 
pitchy), and its strong, almost asperate, punctuation. In colour it resembles 
Bellevoyei, but is rather lighter than that insect. The anterior angles of its thorax 
are somewhat flatly obtuse, and the sides very slightly and gradually sloped to the 
merest indication of a point in the middle, and thence in a similar way backwards 
to the notch of the posterior angles, which is sharp and rectangular at both its 
comers. 
In the male the middle and posterior femora are strongly thickened, the 
middle tibiao curved, and the posterior tibioe thickened and emarginate on the inner 
side before the apex, which exhibits a stout spur. The trochanters of the hinder 
femora are very stout and forked at the apex, reaching half-way along the under- 
side of the femora. The penult, segment has a wide emargination, and the ante- 
penult, is strongly and semicircularly hollowed out. 
Though found under similar circtmistances with the preceding species, M. 
dienticollis appears to be rarer than any of them. 
6. M. HEMiPTERUS, 111., Er., Ki'. This insect is very suggestive of certain 
species of Epurcea, having even been described under the name of nitiduloides by 
Boisduval. Its larger size (often 1^ lin.) and (with the exception of its black 
head) entirely ferruginous colour readily separate it from all the other species. 
It occurs at Mickleham and elsewhere near London, in fungi, &c., but cannot be 
considered common. 
In the male the middle tibise are sUghtly curved near the base, the posterior 
femora are thickened, and the posterior tibise are thickened, curved and produced 
in the middle of the inner side into a stout and sharp tooth, between wlaich and the 
apex is a very evident semicircular notch. Kraatz notices the emai'gination of the 
6th and 7th abdom. segments, which appears to have escaped both Erichson and 
Thomson, possibly on account of there being no occasion to search for other than 
superficial distinctions for this species. 
