172 THE ENTOMOLOGIST. 



of C. coruscator, Linn., male, though the metathorax is curiously 

 convex. 



Ichneumon memorator, Wesm., 1844. — The female which led 

 Marshall to a knowledge of this species as British {cf. Ichn. 

 Brit. i. Addenda 292) is in his collection, and was captured by 

 him at Govilon, a village on the River Usk, near Abergavenny. 

 It is entirely typical, except that the third segment is broadly 

 black on the disc, and is new to Britain. 



Platijlahus voluhilis, Grav. — There are three males in the 

 Collection : one from Stephens's, one from Degvignes's, and one 

 from the Linnean Society's collections. The last was named 

 Cryptiia voluhilis by Gravenhorst himself, and there can be no 

 doubt that it is correctly assigned to the genus Platylabus. The 

 metathoracic spiracles, however, are distinctly elongate, and the 

 red abdomen combined with large gastrocseli, punctate frons, 

 elliptic spiracles, and pale marked anus, leave little doubt that 

 it is synonymous with P. orhitalis, Grav. The differentiation of 

 authors rests on the supposititious shape of the metathoracic 

 spiracles, which were erroneously stated to be circular by 

 Bridg.-Fitch. (Entom. 1881, p. 208). P. voluhilis must, I think, 

 sink as a mere synonym of P. orhitalis. 



CRYPTINiE, 



Iclineumon canaliculatus, Desv. Cat. No. 22. — Three males 

 standing under this name are certainly Plectocryptus leucopsis, 

 Grav. et Mori. (Ichn. Brit. ii. 8) : possibly Gravenhorst's earlier 

 name should stand for this species, since the present males 

 exhibit, though typically Cryptid, distinct carinfe on the second 

 segment. 



Cratocri/ptus {Phygadeuon) tarsatus, Bridg. Trans. Ent. Soc. 

 1881, p. 150 = Plectocryptus pectoralis, Thoms. Opusc. Ent. xxi. 

 (1896), 2383, male and female, and should be relegated to the 

 latter genus (cf. Ichn. Brit. ii. 17). It is very closely allied to 

 P. digitatuii, Gmel. ; and the types of both sexes are in the 

 National Collection. 



Phygadeuon ambiguus. — The two male Cryptids thus named 

 by Desvignes, upon the strength of which he brought forward 

 this Gravenhorstian species as British, are de facto referable to 

 nothing rarer than Microcryptus abdominator. I can at present 

 say nothing more respecting Bignell's example {cf. Ichn. Brit. ii. 

 93) ; but, if retained, P. ambiguus must be regarded as extremely 

 doubtfully indigenous. 



PJrygadeuon curvus, Steph. Illus. Man. vii. 299, is nothing 

 but the male of his P. {Acanthocryptus) 4.-spinus (I.e. 298), and 

 quite distinct from Ichneumon curvus, Schr. ; a co- specific speci- 

 men in his collection bears the MS. name " P. ^-dejitatus." 



Ilcmiteles melanopygus, Grav. — No doubt can remain that 

 Marshall's inclusion of this species in his 1872 Catalogue rests 



