248 MEMOIRS ON THE COLEOPTERA 



converging and distinctly arcuate, gradually a little more so apically; 

 marginal bead fine, entire; surface with fine sparse feeble punctures, 

 which toward the middle become extremely minute and subeffaced; 

 base not linearly punctate; elytra as long as wide, three-fourths longer 

 than the prothorax, the arcuate sides-more converging apically; striae all 

 obsolete, the sutural wholly wanting; punctures very small and remote, 

 becoming obsolete toward the suture basally; lateral stria with a rather 

 abrupt downward arcuation before the middle; pygidia finely, sparsely 

 punctulate, the pygidium convex, with a transverse discal excavation 

 in the type, the anterior margin of which is anteriorly angulate, and the 

 bottom has an imperfect transverse ridge; sides of the metasternum and 

 abdomen rather strongly, not very sparsely punctate, the mes-episterna 

 more finely and sparsely punctate; anterior tibial spinules small, the 

 terminal spur, projecting transversely, long and slender. Length 2.0 mm. ; 

 width 1.2 mm. Mexico (Tepehuanes, Durango), Wickham. 



From the pygidial characters of what is probably the female, 

 above described, it might be suspected that mysticus is closely 

 related to sagillatus Lewis, described as from northern Sonora; 

 but the figure of that species given on the plate has no resemblance 

 whatever, indicating a very much more elongate and narrower 

 species, with far less transverse prothorax. 



Anapleus Horn 



In the catalogue of Histeridse compiled by Mr. Lewis, Anapleus 

 compactus Csy., is given as a synonym of marginatus Lee., the 

 generic type, and this disposition of it is repeated in the Bickhardt 

 list. It is however by no means a synonym of marginatus, differing 

 in its less obese and more oblong outline and smaller size, but 

 especially in the smaller and less conspicuous punctures. Marginatus 

 was described as a native of Illinois, and my Texas example, taken 

 by myself at Austin, agrees with the type of LeConte's species in 

 every particular. The following is another still more isolated 

 species of the genus: 



*Anapleus mexicanus n. sp. Evenly and rather broadly oval, convex, 

 ferruginous; head feebly impressed, very shallowly punctate, reticulate 

 basally, nowhere striate; antennae well developed, the basal joint long, 

 second cylindric, thicker than the following and one-half longer than 

 wide, the following six joints small, equal, submoniliform, the club paler, 

 elongate-oval, as long as the six preceding joints, flattened and trisected 

 by two very fine transverse sutures; prothorax fully twice as wide as 

 long, the sides very strongly converging, feebly and evenly arcuate from 

 base to apex, the latter but little more than half as wide as the base; 

 surface even and with not very small but extremely shallow punctures; 



