SUBGENUS TRICHAPION — KISSINGER 309 



overlap in range or occur in the same area. The group ranges from 

 central Mexico into Brazil. 



The male of Apion sancti-jelicis Sharp has the inner margin of the 

 first segment of tarsus 3 produced mto a short spine; the front legs are 

 simple. The front tarsi of the males of two species, A. caenum, new 

 species, and A. innocuum, new species, are not modified. The front 

 femur of the former is distinctly swollen. The front legs of the latter 

 are not modified; the species is grouped here because its general facies 

 are similar to those of the other species and because only tibia 2 is 

 mucronate. 



The male of A. mirandum, new species, is distinct because the first 

 segment of tarsus 1 is dilated and greatly elongate being about four 

 tunes as long as wide. The male of A. mirijicum, new species, has 

 the inner margin of the first segment of tarsus 1 produced into a large, 

 rounded lobe. 



The first segment of tarsus 1 of the males of the following species 

 has the inner margin produced mto a spine: A. hrachycephalwn 

 Wagner, A. calcaratipes Sharp, A. emplus, new species, .4. innocens, 

 new species, ^1. latitator, new species, and A. spinitarse Wagner. 



Together ^vith A. spinitarse, the males of A. enoplus and A. calcara- 

 tipes have tibia 3 mucronate. The spine on the first segment of tarsus 

 1 of the latter two species is much smaller and not flat as in A. spini- 

 tarse. A. enoplus is smaller and the elytral intervals are clothed with a 

 single row of uniform scales. A. calcaratipes is larger than A. enoplus 

 and the elytral intervals are clothed with two rows of scales which 

 varv* m coarseness and color along the length of the elytra. 



The males of the remaining three species have tibia 3 unarmed and 

 the spine on the first segment of tarsus 1 much smaller than A. 

 spinitarse. A. latitator is distinct with its parallel-sided beak. The 

 beak of A. innocens and .4. hrachycephalum is attenuate toward the 

 apical third. The dorsal surface of the beak of A. innocens is clothed 

 %vith scales that are shorter and coarser than those on the dorsal 

 surface of the pro thorax. The dorsal surface of the beak of A. 

 hrachycephalum is clothed with scales similar to those on the dorsal 

 surface of the prothorax. 



This group is veiy closely allied to the A. griseum group. The 

 species A. enoplus supports this veiw because of its intermediate 

 male characters. One difference is that the frons of this group tends 

 to be comparatively naiTOwer than that of the A. griseum group, but 

 it is never narrower than the dorsal tip of the beak. Also the size 

 is smaller, always under 2.0 mm. and the general facies are somewhat 

 more compact. 



