348 PROCEEDINGS OF THE NATIONAL MUSEUM vol. no 



the beak of the male is one-fourth longer than head and prothorax, 

 and the antennae are inserted at a distance from the eye four times as 

 great as width of frons, and the prothorax is finely punctured. A. bi- 

 color has the prothorax and elytra strongly bronzed, the beak is slightly 

 longer than head and prothorax combined, the antennae are inserted 

 at a distance from the eye one-half greater than width of frons, and 

 the prothorax is finely punctured. 



A. nanulum, new species, has the head strongly humped above the 

 eyes. The heads of the other species are nearly flat. A. subrufum 

 Sharp and A. subtinctum Fall are distinct because of the reddish elytra 

 and yellowish legs. The beak of the male of A. subrufum is a little 

 longer than the head and prothorax combined while the beak of the 

 male of A. subtinctum is about as long as the head and prothorax. 



A. pervicax Fall and A. im.portunum Fall are comparatively shorter 

 and more compact than the other species. The mucrones of the male 

 of the former are very small while those of the latter are long and 

 prominent. The elytral intervals of A. oscillator Sharp are convex 

 while those of A. reconditum Gyllenhal and A. managuense are flat, 

 A. reconditum differs from A. managuense in that the pubescence of the 

 sides of the prothorax is about as coarse as that on the dorsal surface 

 and the beak is slightly expanded at the antennal insertion. The 

 pubescence on the sides of the prothorax of the latter species is dis- 

 tinctly coarser than that on the dorsal surface and the beak is strongly 

 expanded at tbe antennal insertion. 



A. subsequens, new species, differs from A. reconditum by its more 

 acutely prominent eyes, more shallowly punctured prothorax, and 

 scales in striae being not larger than those on elytra intervals. 



This group appears to be closely related to the A. patruele group 

 but its members differ in the more slender shape, tbe shallower basal 

 fovea of the prothorax, the narrower frons, and the slight expansion of 

 the beak over the antennal insertion. A. pervicax and A. importunum 

 make a close approach to the A. patruele group. A. minor, with its 

 attenuate beak, seems to make an approach to the A. rostrum group. 



Apion {Trichapion) aciipunctatum Sharp 



Figure 14,a,6 



Apion acupunctatum Sharp, Biologia Central!- Americana. Insecta, Coleoptera, 

 Curculionidae: Apioninae, vol. 4, pt. 3, p. 51, 1890. 



Description: Length, 1.75 mm. 



Moderately robust. Black; pubescence inconspicuous, very fine, 

 white, uniform. Female beak one-fifth longer than head and pro- 

 thorax combined, moderately, evenly curved; basal one-third cylindri- 

 cal, very gradually attenuate to apex; fine, sparsely punctured through- 

 out. Antennae of female inserted at basal one-fourth of beak, at dis- 



