147 



between these. The genital styles are elongate and bent at the 

 apex. The oedeagus is horizontal and is subcultrate with, ap- 

 parently, a long projection from one side. 



Sjiiicrotatodciphax. 



I . pcrkiiisi. 



PI. X\T, figs. 14-15 and PI. XVIII fig. 14. 



The male pygophor is roundly angular at the lip, and curvedly 

 produced in a somewhat hollow manner dorsally at the sides. 

 The genital styles bear some little resemblance to those of 

 PerkinsicUa saccharicida, but are more attenuated at the base and 

 thickened inwardly there. 



Mcgivnclus. 



1 have temporarily retained this group as distinct from Dcl- 

 phacodcs. The. species included have the head distinctly pro- 

 duced before the eyes, the junction of the frontal keels almost 

 on the top of the head, the pronotal keels not turning upwards, 

 the first segment of the hind tarsi longer than the other two 

 together. They have a common facies of a broad median longi- 

 tudinal pale stripe, and dark lateral margins. 



It seems to be a generic character that the ventral margin of 

 the male pygophor is deeply emarginate 3 or 4 times; it is so at 

 least in M. iioliila, pcrscphojic and proscrpina. 



I. proscrpina sp. nov. 



PI. X, figs. 5-7 and PI. XII. figs. 19-21. 



Blackish fuscous with a broad, pale, ivory white band from 

 ape.x of vertex to apex of abdomen, usually interrupted broadly 

 on the middle of the abdomen, the pale colour of the abdomen is 

 also rather yellower. Frontal keels paler fuscous. Sterna 

 and sternites largely blackish fuscous; labium, antennae and 

 legs pale, the antennae tinged with brownish; fore tarsi and 

 first segment of hind tarsi blackish fuscous. Tegmina sub- 

 hyaline, blackish fuscous, paler internally and exteriorly, great- 

 er part of commissure ivory white. Wing veins blackish fus- 

 cous. Antennal segments subequal. Tegminal veins not or 

 scarcely granulate. 



