2 PROCEEDINGS OF THE NATIONAL. MUSEUM vol.78 



My description of the genus in the reference cited above needs 

 slight correction as follows : The humeral margins of the pronotum, 

 though usually tumid, are not always strongly swollen nor are the 

 epomiae always evident; in many species, especially those of the 

 subgenus Cryptanuridimorpha, the depression of the notauli extends 

 somewhat beyond the margin of the pronotum; in a few species, in 

 which the propodeal apophyses are in the form of high carinae, the 

 apical carina is complete. 



Because of the small numbers of specimens of nearly all of the 

 species and the consequent lack of knowledge of the extent of varia- 

 tion, I have thought it best to give rather full and detailed descrip- 

 tions. Undoubtedly many of the characters described will be found 

 to vary considerably. I have little confidence, for example, in the 

 constancy of such characters as the position of the second recurrent 

 vein in relation to the second intercubitus or of the nervulus with 

 respect to the basal vein, the position of the fracture of postnervulus 

 and nervellus, the details of the structure of the frons immediately 

 above the horn, the sculpture of the metapleurum and to some ex- 

 tent of the j)ropodeum, and the relative length and breadth of the 

 tergites, as well as in certain details of color, though certain other 

 details and color pattern in general are surely of specific significance. 



Apparently nothing is known of the host relations of the species. 



The following key includes only those species that I have ex- 

 amined. At the end of the paper, however, I give a key which 

 includes all the described species that appear to be referable to the 

 genus. 



Genus POLYCYRTUS Spinola 



(For references see under subgeueric heading) 



KEY TO SPECIES EXAMINED 



1. Hypostomal carinae very high, arching over the bases of the maxillae 



and labrum and meeting or nearly meeting on tlie median line (subgenus 



Cryptanuridimorpha Viereck) (fig. 1) 2. 



Hypostomal carinae frequently very high, but never arching over and cover- 

 ing the bases of the maxillae and labium (subgenus Polycyrtus Spinola) 

 (figs. 2, 3) 7. 



2. Abdomen beyond first tergite black, lateral margins of tergites usually 



white 3. 



Abdomen red 6. 



3. Hind legs with femur, tibia, and basitarsus black; tergites not white lat- 



erally 1. elegans (Viereck). 



Hind legs with femur at most piceous, tibia yellowish and tarsus whitish ; 

 tergites laterally white 4. 



4. Space between hypostomal carina and cheek not so deep, the margin hardly 



carinate ; hind femur ferruginous 5. 



Space between hypostomal carina and cheek very deep and separated from 

 cheek by a sharp carinate margin ; hind femur piceous. 



4. inca, new species. 



