80 



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

 first median vein. Ventral 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. Female styles abortive, a 

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



Length 3 mm. ; tegmen 7 .Z mm. 



Habitat: Malay Peninsula. 



Diostrouihus Uhler. 



Proc. Nat. ^lus. U. S. 1896, p. 283. 



Drona. Distant. Faun, lirit. India. Rhynchota III ]x 305. 



Through the kindness of the authorities of the National ]\Iu- 

 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. caniosa (Fauna British India, Fig. 146)/ I believe 

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

 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. pciiiiatiis 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 cantosiis or politiis. and 

 the "forceps" on last ventral ])late are nuich smaller than in tlie 

 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 Sii-i'a 



Lateral marsjins of face not convex 4 



