288 THE ENTOMOLOGIST. 



examiDles I possess being two ancient specimens which were 

 given to me some years ago. Fortunately I have been able to 

 inspect a fine series of nine in Morley's collection, and three in 

 that of Col. Nurse. With one possible exception all the speci- 

 mens I have examined have the costal cell rather shorter than the 

 median, and the recurrent nervure rejected by a distance which 

 is equal to or rather less than the length of the first abscissa 

 of the radius (fig. 4). Wings yellowish hyaline. The upper 

 surface of the abdomen is generally, though not always, fuscous. 



The cocoon I have not seen, and the only description I know 

 of is that of Fitch (Entom. xiv. 143), who tells us that it is thin, 

 smooth, and white. 



Among Morley's insects are two females bred by Cockayne 

 from larvae of Tceniocampa populeii taken in Berkshire. 



Z. infumator, sp. nov. (Fig. 2.) 

 Thorax, abdomen, and legs, including the hind tarsi, rufo- 

 testaceous ; claws black, and also a black dot above the radices. 

 Palpi pale testaceous ; mandibles fuscous at the tips ; antennae 

 testaceous, annulated, darker towards the apices, longer than the 

 body in both sexes. Metathorax marked with a rather elaborate 

 raised pattern, which, though often not so symmetrical as in the 

 case figured (fig. 5) (taken from a specimen in my collection, No. 530), 

 is always present in a more or less perfect condition. Wings dull 

 hyaline, apical half somcivhat infumatcd, costal cell as long as or 

 slightly longer than the median. Costa, nervures, and stigma 

 fuscous, recurrent nerviire rejected by a distance which is greater than 

 the length of the first abscissa of the radius. Kadial areolet of the 

 hind wings not geminated by a transverse nervure. Abdomen smooth, 

 terebra not surpassing the anus. Length, 9-11 mm., expands 

 17-22 mm. 



Described from thirteen males and eleven females. 



Approaches Z. testaceator in size, but difi'ers therefrom in 

 having the terebra concealed, infumated wings, and a shorter 

 first abscissa of the radius, &c. ; from Z. chloropthalma it differs 

 in size and also in the infumated wings, &c. 



Larva dirty cream colour, showing under magnification irre- 

 gular white speckles on the last six or seven segments, attenuate 

 towards the head, parts of the mouth not or scarcely outlined. 



The cocoon is thick, white, somewhat rough but not woolly, 

 attenuated similarly at both extremities, and 10^ to 13 mm. in 

 length ; when exposed to damp it turns a brownish colour (fig. 9). 



Very many times bred from larvae of Boarmia repandata 

 between May 4th and June 1st, from which host Major Robert- 

 son has also bred it at Chandler's Ford. The parasite larva 

 leaves its host when the latter is full-fed and has retired below 

 the ground for pupation, and there spins its cocoon. 



Z. chloropthalma (Nees). Rhogas chloropthalmus, Nees, Mon. 

 i. 202 = Phylax chloropthahims, Wesm., Nouv. Mem. Ac. Brux., 



