514 REVISION OF THE GENUS PAROPSIS, 



are undeniably gradations in the development of the character 

 on which this present subgroup is founded, for, while the anterior 

 prolongation of the head in rostralis, Blackb., is so great as to 

 suggest the idea of even generic distinction from Paroj^sis, that 

 prolongation is less strongly marked in the other species. The 

 distinction, however, is not entirely a matter of degree of pro- 

 longation of the clypeus, for I find that in all the species I place 

 in this subgroup there is a certain point of view from which the 

 portion of the head in front of a line joining the front margin of 

 the eyes appears to have an outline formed by three straight lines 

 (the front one horizontal, the lateral ones oblique), while from a 

 similar point of view the outline of the corresponding portion of 

 the head in the allied species of subgroup iv. appears as an almost 

 even and continuous curve. I cannot ascertain that more than 

 one species of this subgroup has been described hitherto : — viz., 

 P. Hamadryas, Stal, of wfYiiah. Jlavltai'sis, Chp., is a variety. 



The following tabular arrangement will assist in identifying the 

 species described below : — 



A. Clypeus punctured uniformly (or nearly so) with the 

 rest of the head. 



B. The puncturation of tlie prothorax (except the 

 usual coarsely punctured lateral area) uniformly 

 fine. 

 C. Antennae moderately long and slender (joints 



S-10 much longer than wide) Hamadryas, >Stal. 



CC. Antennae stouter and generally shorter (joints 

 8-10 not, or scarcely, longer than wide). 



D. Antenn;T3 not having their dilated portion 

 beginning abruptly at the 7th joint. 



E. Eyes quite fiat Dry ope, Blackb. 



EE. Eyes distinctly prominent Lucina, Blackb. 



DD. Dilated portion of the antennae beginning 



abruptly at the 7th joint Pandora, Blackb- 



BB. The coarse lateral puncturation of the prothorax 



beginning sparsely uear tlie middle of the disc Vesta, Blackb. 



AA. Clypeus scarcely visibly, the rest of the head 



coarsely, punctured rostralis, Blackb. 



