86 ME. 1. O. HOWAED ON THE PAEASITIC HYMENOPTEEA 



sparse, stort, white pubescence ; all femora and tibiae somewhat 

 pubescent ; abdomen smooth, shining. General colour black ; 

 antennal flagellum light brown ; trochantero-femoral and femoro- 

 tibial articulations honey-yellow ; front and middle tibiae honey- 

 yellow at either extremity; hind femora entirely honey-yellow ; 

 all tarsi whitish ; submarginal vein pale to the point where 

 upward bend begins, thence brown ; other veins of fore wing 

 brown ; wing-membrane perfectly hyaline. 



Described from two male specimens, St. Vincent. Differs from 

 other described species principally in the caputal characters. 



Subfamily Enctetin^. 



Ceechtsiits, Westw. 



Syn. Aseirba, Cameron. 



This genus, erected by "Westwood in 1832 (' London and Edin- 

 burgh Philosophical Magazine and Journal of Science,' vol. i. 

 July-December, 1832, p. 127) with very brief characters, for 

 JEncyrtus urocerus^ Dalm., is rejected by Mayr, who retains 

 urocerus in the genus Encyrtus. Thomson retains Cerchysius 

 with a somewhat indefinite diagnosis ; and as two species are 

 found in the St. Vincent material which possess in part the 

 characters of C. urocerus, it is deemed best to use the generic 

 name Cerchysius, especially as the terebral characters alone 

 separate the forms from all other members of the true genus 

 Encyrtus. The characters which may be regarded as of generic 

 value and in which the following species agree are as follows : — 



$ . Head subsemiglobose ; eyes widely separated ; ocelli 

 forming a right-angled triangle ; antennae inserted below middle 

 of face, scape somewhat widened below and reaching to vertex ; 

 flagellum long, slender, and cylindrical, club very slightly en- 

 larged. Mesoscutum and scutellum somewhat flattened, together 

 somewhat tectiform, the scuto-scutellar furrow forming the 

 ridge; scapulae meeting at apex. Abdomen triangular; terebra 

 exserted for at least half the length of abdomen proper. Legs 

 rather longer than normal, resembling in this respect those of 

 Leptomastix ; middle tibial spur not quite so long as first tarsal 

 joint. Wings with short marginal, postmarginal, and stigmal 

 veins, the latter subequal in length ; a narrow, oblique, hairless 

 streak extending from costal margin at stigmal vein to near 

 base of wing on anal margin. 



cj . Differs from female mainly in the funicle-joints of the 



