Habrocryptus.'] BRITISH ICHNEUMONS. 321 



Legs slender and red ; coxae and trochanters, except the white -marked 

 anterior of the male, and in ? the anterior femora basally, the hind ones 

 entirely and the apices of the hind tibiae, black ; $ with anterior femora 

 and tibiae flavidous, and the hind tarsi white-banded. Wings a little 

 clouded, with nervelet punctiform ; radix and tegulae infuscate, the former 

 sometimes, and in $ the latter, white. Length, 5-6 mm. 



This species is instantly known by its entirely sanguineous thorax. 



It is said to occur somewhat sparingly throughout the whole of Europe, 

 and Jurine found the female among Aphides on flowers. I know of no 

 recent records, and have seen nothing like it, although Dale says it is 

 abundant at Glanvilles Wootton, and Stephens thought the female not 

 common at Darenth Wood and elsewhere about London in June. 



CAENOCRYPTUS, Thomson. 



Thorns. O. E. v. (1873), 494- 



Apex of clypeus generally dentate centrally. Metathoracic spiracles 

 small and circular. Abdomen with basal segment angularly curved. 

 Front tibiae of 9 inflated. Wings with lower exterior angle of discoidal 

 cell rectangular or sub-acute, and situated almost further from the base 

 than the small and laterally convergent areolet. 



This genus is rendered distinct from all the allied ones by the shape of 

 the discoidal cell, the white radix and small, laterally convergent areolet. 



Thomson described seven new species under this genus, several of 

 which should certainly be found to occur in Britain, but all the foreign 

 authors have ignored the purely British C. aniainatus. 



Table of Species. 



(2). I. Scutellum white, front coxae, but not hind 



tarsi, white i. RUFIVENTRIS, Grew. 



(i). 2. Scutellum black, hind tarsi, but not front 



coxae, white 2. antennatus, ^r/V(^'-. 



I. rufiventris, Grav. 



Cryptus riifiventris, Gr. I. E. ii. 497 ; Ste. 111. M. vii. 282 ; Ratz. Ichn. d. Forst. 

 iii. 138 ; Tasch. Zeits. Ges. Nat. 1865, p. 92, 9 , Caenocrypttn ntfiveiilris, Thonis. 

 O. E. V. 495 et xxi. 2360, (J 9 . (?) Var. Crypliis eboriniis, Ratz. Ichn. d. Forst. iii. 

 137, i. 



Sub-glabrous, black. Head with frons excavate ; clypeus mutic, some- 

 what gibbose, in 9 discreted and sometimes castaneous ; epistoma 

 prominent ; labrum, all the orbits, a genal mark, and in S clypeus and 

 epistoma also, white. Antennae filiform ; in 9 ^^'t'l central band, in S 

 with scape beneath, white ; basal flagellar joint of former four times longer 

 than broad. Pronotum with two lines on either side, sometimes others 

 upon the pleurae, two lateral dots upon metathorax, as well as callosities 

 before and beneath the radix, white ; metathorax of 9 coarsely and con- 

 fluently punctate, especially in the hcxagonel petiolar area ; lateral areae 

 basally smooth and nitidulous ; petiolar area reaching beyond the centre ; 



Y 



