Brazilian Baring 373 



Basalis bears no close relationship to collaris, as was suspected 

 by Champion; davatus Solari is doubtless allied closely to collaris, 

 but has a much more elongate prothorax, according to the descrip- 

 tion. It is to be regretted that, excepting the long rufous scape, 

 both antennas are broken off in the unique type of bi'partitus, so 

 that the singular male club cannot be described. 



Loboderes Schon. 



This genus is perhaps somewhat more closely allied to Madams 

 than to the preceding, though differing greatly from either, and here, 

 as in the preceding, the male antennae are singularly modified; but 

 the special abnormality in this case affects the shaft and not the 

 club to any notable degree. In Loboderinus there is a remarkable 

 sexual difference in the color of the beak, this being very pale in the 

 male and virtually black in the female; here a sexual difference in 

 color also sometimes exists, but it affects the antennae and not the 

 beak- mflavicomis Gyll., and some allied species of small size for 

 instance, the antennas are pale yellow in the male but very dark or 

 black in the female. In Loboderes the body is elongate-oval and 

 strongly convex in form, with the upper surface polished and 

 wholly glabrous, but the under surface is generally densely clothed, 

 wholly or partially, with sulphur-yellow scales. The beak is more 

 or less thick and differs very little in the sexes, being sometimes a 

 little more compressed in the male, and the antennae are inserted 

 near two-thirds to three-fourths in both sexes, the first funicular joint 

 thick and only slightly elongate, the outer joints closely joined and 

 increasing in width, so that the rather large oval club is somewhat 

 gradually formed in the male, the funicle short; the very transverse 

 outer funicular joints bristle with long erect squamiform setae, which 

 are wholly wanting on the less transverse joints of the female. The 

 prosternum is flat, sometimes transversely ridged between the coxae 

 and separates the latter by not quite twice their width as a rule. 

 The legs are simple, rather short and with mutic femora, the poste- 

 rior and intermediate compressed, with very acute upper margin, 

 the prothorax only feebly subtubulate, with prominent rounded 

 basal lobe and flat, closely fitted and transversely lunate scutellum; 

 the elytra are very finely and subobsoletely striatulate and in- 

 dividually rounded at apex. The pygidium is rounded, subsimilar 



in the sexes and only feebly oblique. The abdominal segments are 



subequal among themselves as in Loboderinus. 



The species are rather numerous, those at hand being as follows: 



Femora glabrous, or with minute and very remote squamules; under surface in 

 part glabrous; species of larger size. Body elongate-oval, convex polished, 

 feebly sculptured and deep black throughout, the legs, beak and antennae 



