202 [September, 



fronB below the keel is excavated. Tn lugHhrin the keel is feeble, and situated on a 

 level with the lower margin of the eyes, the impression above it is large and sliallow, 

 and the excavation on the frons feeble and less extensive. The ? of selecta may be 

 known by the long central keel of the pronotum, which is quite half as long as the 

 pronotum itself, whereas in lu(jubris it is not more than a quarter as long. 



Corlxa saundersi, Kirkiildy (Ent. Mo. Mag , xxxv, p. 3). 

 This species was described from three or four specimens taken 

 by myself on Chobham Common ; as they are at present out of my 

 hands, I can onl}'^ quote from Kirkaldy's article {loc. cif.). 



" Differs from nig rolineata in being more feebly rastrate on the corium, and by 

 the form of the raetaxyphus, horn fo!!sarum by the longer jjronotum and greater 

 number of pronotal transverse lines, and by the form of the raetaxyphus; as regards 

 the c? the new species is separable from nigrolineata by the form of tlie strigil and 

 of the frontal fovea, and h'om foasarutii by the form of the pala9 and of tlie strigil." 



Of the raetaxyphus he says, '' very short, triangular, subequilateral ;" of the 

 strigil, " very large, oblong, oval, length twice as great as breadth, composed of four 

 (? five) irreguhir, sinuately-margined rows of stria3." 



Corixa fahricii, Fieb. = C. nigroUneata, Fieb. 



„ cof/jiata, U. and S. {nee. Fieb.) = C caladonica, Kirk. 



,, (jermari, Fieb. {intricata, D. and S.). 

 This species I regarded as a var. of carinatn. Sahib., but now 

 treat it as distinct, in conformity with the views of others. 

 Sigarn, Leach = Micronecto, Kirk. 



„ scJioltzi, Fieb. = meridionalis, Costa. 



St. Ann's, Woking : 



August 3rd, 1907. 



NOTES ON THE GENUS PEZOMACSUS, IN MORLEY'S "BRITISH 



ICHNEUMONS."* 



BY E. A. ELLIOTT, P.E.8. 



There can be no doubt that Professor Forster made too many 

 species of this genus by giving specific value to trivial variations, 

 but 1 think that Mr. Morley has gone rather too far in the opposite 

 direction. 



The development of the basal costa of the petiolar area in this 

 genus, upon which Forster founds his two great divisions, certainly 



*Cf. Ichneumonologia Britannica, voL ii, 1907 (Keys, Whimple Street, Plymouth). By Claude 

 Morley, F.E.S., &c. 



