1895.] HEXnPTERA-HOMOPTEBA OF THE ISLAND OP ST. VINCENT. 59 



including the wide costal one, and no transverse veins in the ulnar 

 series ; twelve long narrow areoles in the apical series, most of 

 which have three or four transverse veins towards the middle ; the 

 apex more transparent than the corium. 



Length of body 5 mm. ; width of pronotum 1| mm. ; length to 

 tip of wing-cover 7-7| mm. 



This species approaches nearest D. cidtellator, Tweedie, but the 

 head of the former is much shorter and wider, and the venation 

 simple, not dense. 



Tangia angtjstata, sp. nov. 



Pale green, narrower than usual, the wing-covers slightly 

 curving towards the base, with the costa almost straight from 

 thence to the meaibrane. Head a little longer than wide, with the 

 tip rounded, but hardly narrowed, the margins prominently 

 retlexed, the middle line cariuated, with its basal half triangularly 

 divaricating ; frout long, the sides feebly sinuated and expanding 

 somewhat triangularly before the tip, the middle line with a thick 

 carina throughout ; epistoma also carinate ; rostrum reaching to 

 the middle coxao. Pronotum about half as long as the head, almost 

 of the form of a horse-shoe, the ends tapering posteriorly, the 

 middle line acutely carinate. Mesonotum long, distinctly carinate 

 on the middle line, the apex subovate, and the base triangularly 

 narrowed with the end truncate. Hemelytra with simple straight 

 veins, the inner discoidal vein only forking beyond the middle ; no 

 transverse veins on the corium, the longitudinal veins all forked at 

 tip to form the boundary of the membrane, the membrane tapering 

 a little on the inner apical border ; the veins and cross-veins 

 numerous and rather close-set, more or less dusky in the matured 

 individuals. Posterior femora with three spines besides the pair 

 on the tip. 



Length to end of venter 5| mm. ; width of pronotum Ig mm. ; 

 length to tip of wing-covers 7 mm. 



Two specimens were taken in St. Vincent, one of them on the 

 windward side. They are precisely like others which were secured 

 on the island of Grenada. 



Tangidia, gen. nov. 



Similar to Tangia, but with a broad shield-like head and less 

 symmetrical venation to the corium. Head with the eyes as broad 

 as the front of pronotum, the vertex a little longer than wide, 

 subseniicircular in front, with the lateral margins stoutly reflexed ; 

 the central cariua A- shaped, with the tip touching the apex and 

 set in a sunken surface ; front broad oval, nearly twice as long as 

 its width, with reflexed margins and a carinate middle line. Pro- 

 notum somewhat horseshoe-shaped, almost triangular in front, and 

 carried deep into the notch in the head, A-carinate in the middle, 

 the lateral prolongations tapering narrow posteriorly ; mesonotum 

 much longer than wide, with carinate sides and middle line, the 



