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veins, a series of wiiite spots along costal margin, reaching to 

 first median vein. V entral edge of pygophor truncate ; sides 

 narrowly and angularly produced, the apex reaching about middle 

 of anal tube ; length of anal segment about three times the width 

 of base, subparallel-sided to near the pointed apex, anus situated 

 in middle ; styles as long as the anal segment, the lower edge sin- 

 uously rounded on basal half, then concavely curved to the in- 

 wardly-turned apex, the upper edge rounded on basal half, then 

 convexly curved to inturned apex. L^emale styles abortive, a 

 small triangular plate on each side of the minute anal segment. 



Length 3 mm. ; tegmen 7 .Z mm. 



Habitat: Malay Peninsula. 



Diosti'oinbiis Uhler. 



Proc. Nat. Mus. U. S. 1896, p. 283. 



Droiia. Distant. Faun. Brit. India. Rhynchota III p. 305. 



Through the kindness of the authorities of the National Mvt- 

 seum, Washington, I have been able to examine a female cotype 

 of this genus, and cannot separate it from Distant's Drona. The 

 figure of D. carnosa (Fauna British India, Fig. 146) I believe 

 to be of a female, and the description of the type of Diostrombus 

 appears to be from a female ; the male is not likely to possess 

 the forceps-like processes arising from the posterior edge of the 

 pregenital ventral plate. 



( 1 ) D. pciuuifiis Distant. 



Faun. Brit.. India. Rhynchota III p. 306. 



I have one female specimen from Java that agrees in all the 

 specific characters with this species ; the keels on vertex and 

 face are not nearly so well defined as in canwsus or politus, and 

 the "forceps" on last ventral plate are luuch smaller than in the 

 type species. 



GROUP IV. 



1. Radial and median basal cells subequal in length, ending 



same distance from base of tegmen 2 



Radial and median basal cells not ending same distance 

 from base of tegmen, unequal in length 6 



2. Face strongly carinate along middle Phacoiiciira 



Face not carinate along middle 3 



3. Lateral margins of face convex Siti'a 



Lateral marpins of face not convex 4 



