68 ■ Mr. Cameron on tJie 



vLires fuscous, thick. Antennae stout, a little longer than 

 the body, stout; the third joint attenuate, a little longer 

 than the fourth. Head large, a little wider than the thorax ; 

 shining, impunctate. Prothorax large, finely rugose ; semi- 

 perpendicular in the middle. Mesonotum shining, ob- 

 scurely striated at the base ; the parapsidal furrows distinct 

 at the base. Scutellum rugosely punctured, depressed in 

 the centre ; the basal foveae large, wider than long, curved, 

 united. Metapleurai rugosely punctured. Abdomen shin- 

 ing, the second and third segments subequal, apical ventral 

 segment bluntly plough-share-shaped, not projecting beyond 

 the apex. Hind tibiae curved, the metatarsus twice the 

 length of the second joint ; claws apparently simple, wings 

 ample ; the radial cellule open at base and apex and in 

 front ; narrow elongate ; the third abscissa of the radius 

 curved ; cubitus nearly complete. $ 



Length nearly i ^ mm. 



On the whole, this species agrees fairly well with Diastro- 

 phns, and it is certainly distinct from either of the two 

 described species, but these are true gall-makers, forming 

 galls on Riibus and Potentilla, while the present species was 

 bred from the aphis of the nettle, by the Rev. T. A. Marshall. 

 The difference in habit probably indicates a generic differ- 

 ence, but in the absence of the ? one is hardly justified in 

 forming a new genus for its reception. The simple claws,. 

 the confluent scutellar fovese (which form a curved furrow),, 

 and the depression in the centre of the scutellum, are three 

 points of distinction between it and DiastropJuis. 



Bred from the Nettle aphis by the Rev. T. A. Marshall 

 at Barnstaple. 



The following new species of Eiicoila has been taken in 

 Trinidad by the Rev. T. A. Marshall, M.A., F.L.S. 



EUCOILA RUFIVENTRIS, Sp. IIOV. 

 Black, shining, impunctate ; the legs fulvous-red ; the 



I 



