BRACHYGLUTINI 169 



take into account two species, separabilis (Schaufuss) and adparatus (Schau- 

 fuss), both from Yucatan. 



Known only from the Lesser Antilles, and separable from the other 



species by remarkable male antennae described below 2 



Not known from the Antilles, and male antennal modifications of a 

 much different character, as described below 3 



2. Eleventh antennal segment longer than segments I to X inclusive 



united, and over twice as wide as first segment; this eleventh seg- 

 ment with an oblique, ovate fovea at basal third, and of a unique 

 shape, obliquely truncate at base, obtusely rounded at apex, strongly 

 sinuate medianly, with the internal face broadly concave and the 

 external face angulate-convex; 1.0 mm. long; known from Grenada 



clavatiLS 



Eleventh antennal segment ovate, slightly sinuate, base rounded- 

 truncate, apex acute, as long as the four preceding segments united ; 

 segment X as wide as eleventh, very transverse with the external 

 face straight and the internal face obliquely produced to form an 

 acut€ apical internal angle; IX much smaller than either tenth or 

 eighth, with the internal face acute; VII and VIII subspherical, each 

 with a long appendage or spine arising from the internal face; 1.25 

 mm. long; known from Grenada pectinicornis 



3. The vertexal foveae free, not connected in any way with the transverse 



frontal sulcus 4 



The vertexal foveae connected with the transverse frontal sulcus or 

 impression by a fine, shallow arcuate inter- foveal sulcus 5 



4. Antennal segment III obconic; IV to VII more transverse; VIII-XI 



abruptly wider to form the antennal club ; X with a distinct blunt 

 tooth which arises from the internal apical angle of segment and 

 extends distally, almost reaching the excavation of the eleventh seg- 

 ment; XI longer than the four preceding segments united, lateral 

 face straight for basal two-thirds and then very oblique to the obtuse 

 apex, the internal face irregularly convex, surface with a deep trans- 

 verse excavation which lies in a part of the basal half, this excava- 

 tion with a small acute tooth on the inner basal edge provided with 

 a dense brush of setae; length 1.0 mm.; known from Guatemala and 



British Honduras globosus 



Antennal segment III-VII moniliform, not transverse; VIII slightly 

 transverse; IX slightly wider, lenticular; X strongly transverse and 

 slightly oblique, not toothed; XI very large, almost as long as the 

 third to tenth segments inclusive united, wide, with lateral face con- 

 vex to internally oblique, subacute apex and mesial face distinctly 

 sinuate at apical third, the entire basal half of the dorsal surface of 

 the segment deeply excavated; length 1.2 mm.; known from Mexico 

 cavicornis 



5. Antennal segment XI almost as long as the six preceding segments 



