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AMEllICAX AKTHEIBIDAE. 

 By KAEL JORDAN, I'li.D. 



THE gonns AUamlnis, erected by Lecoiite in 1870, is so very close to tlie Old 

 World genus Enedinifcs of ScbOnherr, that its distinctness from this seems 

 to uie to be doubtful. 



1. Allandrus indistinctus s]ipc nov. 



S. Brown-black, irrorated with white broadened hairs, a widely interrupted 

 mesial line on pronotum, and the scutellum more densely jiubescent white ; antenna, 

 tibiae, and tarsi rufous, antennal segments brown at apex, club brown, rufons 

 at bases of segments ; elytrum with some rnfescent spots near suture. Rostrnm 

 twice as long as apically broad, flat, feebly impressed at base, densely reticulate- 

 punctate like head and pronotum. Antennal segment 2 longer than 3, 9 more 

 than twice the lensjth of 10, this broader tlian long, 11 ovate. Elytrum indistinctly 

 spotted with velvety black, deeply })unetate-striate, the interspace rather finely 

 punctured. First segment of foretarsus about one-fifth the length of the foretibia, 

 little longer than second segment. 



Length, 3 mm. 



Hub. Cochabamba, Bolivia (Cxermain). 



1 c?. 



We have a number of ? ? from Cochabamba and Brasilia which have a 

 much shorter rostrum than the S here characterised. They belong apparently 

 to two or three more species. 



We have received nearly all the species described in this pai}er from Mons. 

 H. Donckier de Donceel, Paris. Those from Jatahy, Province (Joyaz, Brazil, 

 have been collected by Mons. C. Pujol. 



The genus G;/mno<inathus is purely Neotropical. The number of species 

 occurring in South America is very large. We have identified all those described, 

 e.xcept siqmtiis (l.s33) Gylh., which we do not aiipear to possess, and nehulosiis 

 (1874) Motsch., of which the description is iusuflicient for recognition. G. ojihiopsis 

 (1833) Dalm. and decorus (1853) Perr. are the same according to the descriptions. 

 The variety in strncture is so considerable that the genus will ultimately have 

 to be divided up into several genera. Tlie most remarkable structure, we think, 

 is that found in the 6 of the species described under No. ID. In that insect 

 the (? bears on the head a rounded groove of which the edge is raised, giving 

 the insect the appearance of being trepanned. 



•-'. Gymnognathus extensus spec nov. 



?. Similar to aiicora. Rostrum longer, narrower, more strongly dilated at 

 apex ; frons proportionally wider ; prothora.x longer, dorso-lateral vitta broader, 

 continuous, angle of carina much smaller, less than OU , with the tip rounded ; 

 sutural area of elytra continued to apical declivity, including a brown postmedian 



