Coleopterological Notices, VII. 391 



apparently constituting a differential feature of true generic weight 

 which appears to have been overlooked. The pronotum is how- 

 ever frequentl}^ impressed transversely near the base, the impres- 

 sion generally distinctly interrupted at the middle, but there is 

 in no case even so much as a trace of the circular pits so charac- 

 teristic of Euconnus. 



The body is generally somewhat stout and noticeablv ventri- 

 cose, much more so as a rule than in Euconnus, and there are but 

 few exceptions — such as clavatum — where the form becomes 

 slender, though always remaining strongly convex. The head is 

 moderate in size, convex, without asexual irregularity of any 

 kind except in the extremely minute caviceps, strongly rounded 

 behind, the occiput descending abruptly and almost vertically in 

 profile to the neck, which is constricted as usual. The eyes are 

 quite anterior in position and vary greatly in size and promi- 

 nence. The antennae vary but little in type of structure, and are 

 not affected sexually to more than a slight degree, the two basal 

 joints larger, the next four cylindric and equal in width, forming 

 a peduncle for the enlarged apical parts, the seventh forming a 

 transition to the more or less elongate 4-jointed club, which, how- 

 ever, becomes purely 3-jointed in a few species, the eighth joint 

 then being nearly similar to the seventh ; but the eighth varies 

 considerably in size in the 4-jointed club, so that the 3-jointed 

 condition is simply an extreme limit, and the species possessing 

 it do not present any other differential feature. The species hav- 

 ing a 3-jointed club in Euconnus constitute much more abruptly 

 circumscribed groups. The maxillary palpi have the third joint 

 elongate and obconic or suboval, the fourth small, slender and 

 aciculate. 



The hind coxse are rather narrowly separated, in one groupbe- 

 coming almost contiguous and with the abdominal process angu- 

 late; in these species the first ventral segment is peculiarly modified, 

 the posterior tarsi longer, with the joints more unequal and the 

 hind tibise provided at apex with a long and slender spur in the 

 male. This singular spur is, however, not confined to the group 

 with triangular intercoxal process, but occui-s also in some of the 

 minute species with simple clypeus assigned to the preceding 

 section. The clypeal tooth so prominent in the terger species of 

 the first group, having an unimpressed pronotum, is a perfectly 

 asexual feature, and seems to be constant in form and size in all 



