NEMATUS ALIENATUS. 207 



years, for some years I have found them abundantly, 

 while in the same spot next year not one could be seen. 



In confinement the cocoon is spun either in the gall 

 itself or in the earth. It is of the same form and 

 colour as that of N. gallicola. In confinement I bred 

 the flies during February and March. 



N. herbacece has been found at Allonby in Cumber- 

 land by Mr. Inchbald, at Ben Ledi by the same gentle- 

 man ; they occur also at Rannoch, Braemar, in Bredal- 

 bane, and in Sutherlandshire. 



105. NEMATUS CRASSISPINA. 



Nematus crassispina, Thorns., Hjm. Sc. i, 164, 99; Andre, 



Species, i, 126 ; Cat., 17,* 71 (?). 



Black ; tegulae, knees, tibiae, and tarsi obscure white ; apex of hinder 

 tibiae and tarsi obscure fuscous ; labrum and mandibles piceous, costa 

 and stigma pale, thick ; clypeus slightly incised, antennal fovea shallow, 

 indistinct. Antennas as long as the abdomen, thick, scarcely attenuated 

 at the apex, the third joint distinctly longer than fourth. Spurs short, 

 thick ; hinder tarsi shorter than tibiae, cerci short, thick, saw scarcely 

 half the length of abdomen, sheath pilose, not projecting beyond apex 

 of abdomen. 



Length 1| lines. 



I am not sure if this be the crassispina of Thomson. 

 It has the apical third of hinder tibiae and tarsi fuscous, 

 which is not apparently the case with Thomson's 

 species, but it agrees with it fairly otherwise, includ- 

 ing the tarsi being shorter than the tibiae. 



One English specimen without note of locality. 



106. NEMATUS ALIENATUS. 



Nemut'us alienatus, Foer., Verh. pr. E-heinl, xi, 334, pi. vii, 



f. 43 ; Kirby, List, of Hym., i, 138, 

 267, pi. vii, f. 13. 

 anglicus, Cam., E. M. M., xiii, 173. 



Black, shining ; mouth, tegulae, legs, and pronotum white, head a 

 little testaceous behind the eyes ; femora nearly all black, with a pale 

 band on the under side of posterior ; hind tarsi and apex of tibiae broadly 

 black ; posterior tarsi nearly longer than tibiae. Antennae nearly as long 

 :is the body, thin, third and fourth joints equal; cenchri large, dull 



