Mr. F. Walker on some new species of Chalcidites. 181 



on the vertex : antennae black, filiform, pilose, nearly as long as the 

 body ; first joint long, fusiform ; second long-cyathiform ; third very 

 short ; fourth and following joints long, linear ; club more than twice 

 the length of the ninth joint : thorax oblong- subquadrate : prothorax 

 transverse, very short : scutum of the mesothorax broad ; parapsides 

 united to the scutum ; axillae triangular, complete ; scutellum ob- 

 conic ; epimera large : propodeon transverse, short, declining : po- 

 deon extremely short : abdomen obconic, depressed, smooth, shining, 

 rather shorter and narrower than the thorax ; metapodeon of mode- 

 rate size ; octoon and two or three following segments short ; the 

 rest very small : legs fulvous, pilose ; mesotibiae and mesotarsi dilated 

 and the former armed with long spines : wings limpid ; nervures ful- 

 vous ; humerus much less than half the length of the wing ; ulna 

 very short, broad, fuscous ; radius extremely short ; cubitus of mo- 

 derate length, pointing towards the disc of the wing ; stigma very- 

 small. 



England. From the collection of the Rev. G. T. Rudd. 



20. Encyrtus Hyettus. Nigro-cyaneus, capite viridi, antennis ni- 

 gris, pedibus piceis, alls fuscis. (Corp. long. lin. f ; alar. lin. 



Body short, thick, broad, convex : head transverse, bright green, 

 roughly punctured, a little broader than the thorax ; vertex narrow ; 

 front abruptly declining, slightly impressed : eyes pubescent, very 

 large : ocelli disposed in a triangle on the vertex : antennae capitate, 

 pubescent, black, shorter than the thorax ; first joint long, slender, 

 produced beneath ; the other joints forming a compact fusiform mass ; 

 thorax short, dark blue, finely squameous : prothorax not visible : 

 scutum short, broad ; parapsides forming one segment with the scu- 

 tum ; scutellum obconic, surrounded by a rim : propodeon short, 

 broad : abdomen broad, shorter than the thorax, to which it is closely 

 joined without any apparent podeon : legs stout, piceous ; tarsi paler : 

 wings fuscous ; nervures piceous ; humerus much less than half the 

 length of the wing ; ulna about one-third of the length of the hu- 

 merus ; radius short ; cubitus long, not much shorter than the ulna ; 

 stigma ver}' small. 



Taken in St. Vincent's Island by the late Rev. Lansdown Guild- 

 ing. In the collection of the Rev. F. W. Hope. This species may 

 be considered as the type of a new genus, for which I propose the 

 name JEnasius. The ulna is longer than is that nervure in most other 

 Encyrtidce. In the form of the antennae it approaches Cerapteroce- 

 rus, and in some characters it resembles Eunotus, 



21. Elasmus Anticles, fem. Viridis, antennis pedibusque piceis, 

 alis limpidis. (Corp. long. lin. 1 ; alar. lin. I5.) ^ 



Fem. Body green : head very short : antennae piceous, shorter than 

 the thorax : thorax convex, coarsely punctured : podeon not appa- 

 rent : abdomen lanceolate, twice the length of the thorax, depressed 

 above, keeled beneath, decreasing in breadth from the base to the 

 tip : oviduct subexserted : legs piceous, long, slender : wings limpid ; 



