94 Rev. T. A. Marshall's monograph of 



luteous, nervures fuscous ; of the $ fusco-hyalino, squamulre 

 testaceous, nervures and stigma fuscous ; prse- and pobrachial 

 areolets of the fore wings of equal length ; radial areolet of the 

 hind wings divided by a distinct transverse nervure. Terebra as 

 long as the 1st abdominal segment. Length, 3 — 4$; wings, 

 6—9 lin. 



The larger size is more usual, but one $ of those before me is 

 only 3 lines long. Head transverse ; front excavated ; eyes large, 

 glabrous ; face transverse, beset with short white hairs ; clypeus 

 with longer hairs, convex, prominent ; mandibles dark at the tips ; 

 palpi elongate, pallid. Antennte \ longer than the body, slender, 

 setaceous, those of the $ usually 47 — 49-, of the 2 43 — 49-jointed. 

 Mesothoracic sutures strongly impressed. Mesopleurse piinctate, 

 beneath the wings smooth. Metathorax short, rounded, irregularly 

 (in the $ subobsoletoly) rugose and reticulated, with a fine medial 

 carina. Abdomen as long as the head and thorax and as wide, 

 after the middle ; that of the 2 subfalcate, compressed ; suturi- 

 form articulation subobsolete ; segment 1 forming \ of the whole 

 abdomen, obsoletely aciculated, three times broader at the apex 

 than at the base ; tubercles placed just before the middle ; tracheal 

 grooves distinct. Nervures of the wings stouter and darker in 

 the $ ; recurrent nervure interstitial or rejected ; 2d cubital areolet 

 somewhat longer than broad ; 1st intercubital nervure much 

 longer than the 2d. 



The $ is very like that of deceptor, sp. 3 ; the 2 

 strongly resembles both chrysophthalmus and deceptor in 

 the present genus, as well as Zele testaceator, Cur., 

 among the Macrocentrides. 



Not uncommon from May to September. Described 

 from five males, six females, contributed by Bignell, 

 Billups, Bridgman, and Fitch ; taken in Darenth Wood, 

 in Devonshire, near Cardiff, Lynn, St. Albans, &c. A 

 solitary parasite ; the $ was bred by Bridgman, but 

 from what source I am not informed. Cocoon 6 lines 

 long, felted, stramineous, with some loose flocculence. 



2. Mctcorus chrysophthalmus, Nees. 



Bracon chrysophthalmus, Nees, Mag. Ges. Berl., 1811, 

 p. 21. 



Perilitus chrysophthalmus, Nees, Mon., i., 34; Wesm., 

 Nouv. Mem. Ac. Brux., 1835, p. 24 ; M. chry- 

 sophthalmus, Ruthe, Berl. ent. Zeits., 1862, p. 11, 

 $ 2 ; S. v. Voll., Pinac, pi. xliv., f. 3, 2 ; Ratz., 

 Ichn. d. Forst., iii., 59. 



