Mr. F. Walker on some British Chalcidites. 185 



verse, short, very large, roughly punctured, broader than the thorax ; 

 front convex : eyes oval, of moderate size : ocelli near together on 

 the vertex : antennae fulvous, slender, clavate, longer than the tho- 

 rax ; first joint long and slender ; second cyathiform ; third and 

 following joints to the ninth small, nearly equal in size ; club fusi- 

 form, much broader than the ninth joint and more than thrice its 

 length : thorax hardly longer than broad : prothorax transverse, 

 short, visible above : scutum of the mesothorax very short, forming 

 one segment with the parapsides ; axillae small, not extending over 

 the dorsum ; epimera ? large ; scutellum obconical : metathorax with 

 the propodeon and podeon very short : abdomen depressed, smooth, 

 shining, shorter than the thorax ; its breadth equal to its length : 

 oviduct fuscous : legs piceous, stout ; tarsi fulvous ; middle legs 

 dilated, and their tibiae armed with long spines as usual : wings 

 fuscous, small ; nervures piceous ; humerus less than half the length 

 of the wing ; ulna very short, not one-fourth of the length of the 

 humerus ; radius as long as the ulna ; cubitus longer than the radius ; 

 stigma extremely small. 



Encyrtus Machceras. Reared by Mr. Haliday from the coccus of 

 the elm. 



Encyrtus argentifer. Encyrtus Paralia is a variety of this species. 



Aphelinus Acaetes, Fem. Fulvus, antennis piceis, pedibus flavis, 

 alts limpidis. (Corp. long. lin. ^ ; alar. lin. §,) 



Body fulvous, flat, slender, shining, finely punctured, yellow 

 beneath : head transverse, nearly as broad as the thorax, slightly 

 produced in front : eyes oval, rather large : ocelli near together on 

 the vertex, the middle one very little in advance of the other two : 

 antennae subclavate, piceous, longer than the thorax ; first joint ful- 

 vous, long, rather stout ; second yellow, long- cyathiform ; third and 

 following joints to the eighth short, successively increasing in 

 breadth ; club fusiform, broader than the eighth joint and more than 

 twice its length : thorax oval : prothorax transverse, extremely short, 

 not visible above : scutum of the mesothorax rather large, forming 

 one segment with the parapsides ; axillae triangular, not joining 

 together ; scutellum somewhat rhomboidal, shorter than the scutum : 

 metathorax with the propodeon and podeon very short : abdomen 

 long-obconic, longer but not narrower than the thorax: legs yellow; 

 tips of the tibiae armed with a single spine ; joints of the tarsi from 

 the first to the fourth decreasing in length ; fifth joint longer than 

 the fourth ; ungues and pulvilli small : wings limpid ; nervures yel- 

 low, not extending beyond the middle of the wing ; humerus passing 

 like the ulna along the costa; radius extremely short; cubitus 

 longer than the radius ; stigma very small. 



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



Ann. $ Mag. N. Hist. Vol xiv. 



