1868. 209 



elytra have also a lighter pitchy -brown tone, the apical margin of the elytra being 

 often pale, and the two apical segments and hinder margin of the ante-pennlt. 

 being always, and the lateral margins of all the segments sometimes, ferruginons- 

 i testaceous. It is not nearly so shining as sinuatocollis, being almost as closely 

 punctured and opaque as depressus. 



In the male the apparent sexual characters are of very slight development ; 

 the posterior femora and tibiae exhibiting no increase or curving, and the interme- 

 diate femora being very slightly enlarged, with the tibise scarcely perceptibly 

 curved. The male, in fact, is scarcely distinguishable from the female. Beneath, 

 the abdomen exhibits the emarginations of sinuatocollis in a more marked degree. 



From M. denticollis it may be known by its greater opacity, the dark base of 

 its antennffi, 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. Bellevoyei has been confounded 

 with M. depressus (!), on account of the colour of its antennae. 



5. M. DENTICOLLIS, Beck, Er., Kr. Readily 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 tibiae curved, and the posterior tibiae 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 emarginafcion, and the ante- 

 penult, is strongly and semicircularly hollowed out. 



Though found under similar circumstances with the preceding species, M. 

 dienticollis appears to be rarer than any of them. 



6. M. HEMiPTERUS, III., Er., Kr. 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 li 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 tibice are slightly curved near the base, the posterior 

 femora are thickened, and the posterior tibiae are thickened, curved and produced 

 in the middle of the inner side into a stout and sharp tooth, between which and the 

 apex is a very evident semicircular notch. Kraatz notices the emargination 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. 



