BRACHYGLUTINI 133 



morphologically separated by an oblique suture. The fifth tergite and sixth 

 sternite are free to allow separation distally for the extrusion of the penis. 



Prosternum very short before the anterior coxae, simple. 



Mesosternum tumid, with carinoid margins, and medianly elevated into a 

 longitudinal carina. Middle coxae approximate but not contiguous. 



Metasternum large and complex; glabrous laterally and pubescent me- 

 dianly. This sparsely pubescent area extends from the posterior coxae to an 

 acute angle posterior of the median metasternal process which enters between 

 the bases of the middle coxae, and the edges of this pubescent space are sharply 

 raised or carinoid. The arcuate lateral carinoid margins of the area bifurcate 

 anteriorly to send out an oblique carina posterior of each middle coxa, which 

 passes externally of the coxa and ends just above sternal fovea IV on each side. 

 Sternal foveae IV and V well-developed. Pubescent metasternal area depressed 

 and thin in the posterior, median third between the posterior coxae. Posterior 

 coxae very widely separated. 



Anterior femora inflated; flattened on the ventral face in the apical half, 

 this flattened area oblique and glabrous and bearing at its basal external angle 

 a distinct foveoid scar. Tarsi very long and slender, first tarsomere minute, sec- 

 ond and third very much longer, the last tarsomere being shorter and thinner 

 than second. This third tarsomere bears a single claw. Under high magnification 

 on a slide mount this claw is seen to be distinctly bifid at apex! 



Described on a single male specimen, collected by the author from decayed 

 log mold at Drayton 15 on Barro Colorado Island, Gatun Lake, Panama Canal 

 Zone. 



This minute, distinctive species is easily separable from its congeners by 

 the triangular second antennal segment, sexual characters, and single fovea of 

 each elytron. Its anatomy is so divergent that it may warrant subgeneric isola- 

 tion with further accumulation of data. 



fracticornis Raffray. 1909. Brazil. Genotype. 

 patricia new species. Panama Canal Zone. 

 sulcifrons Raffray. 1917. Paraguay. 



EREMOMUS (Raffray, 1904) 



This genus contains two South American species, closely allied to Reichen- 

 bachia. The head in both species has the vertex trifoveate, the foveae being large 

 and equal in size, a pair of vertexal foveae lie on the head between the eyes, 

 and a third fovea is on the anterior region of the head between the antennal 

 bases, just behind the nearly truncate front. The four-segmented maxillary 

 palpi have the usual minute first segment; second segment elongate, very slender 

 at base and suddenly globose in distal third of its length ; third segment trans- 

 versely triangular, with the mesial face acute and lateral face rounded convex; 

 fourth segment very much wider than third, ovate, base truncate, apex acute. 



