3l6 BRITISH ICHNEUMONS. {Cryptus. 



spiracles of the nietathorax longer, the female terebra shorter and the male 

 post-petiole broader. 



'I'schek mentions two varieties of the female, the first of which has the 

 hind femora infuscate or black, and the second, in addition, has the 

 scutellum and a callosity beneath the radix black. 



Stephens records this species, which is common throughout north and 

 central Eurojx% from the London district, in June. I have seen a male 

 captured by Verbury at Pembridge, in July, and have myself taken it on 

 elm in the same month at Ipswich. 



HABROCRYPTUS, Thomsoti. 

 Thorns. O. E. v. (1873), 498. 



Head triangular, declived behind ocelli ; vertex narrow and centrally 

 angularly emarginate ; eyes somewhat strongly convex ; clypeus prominent, 

 sub-gibbose, mutic and deflexed before apex. Antennae filiform, of $ 

 with narrow white band. Metathorax not short ; spiracles small and 

 sub-circular ; apophyses wanting ; mesosternal sulci deeper behind the 

 centre. Abdomen of $ fusiform and centrally red, of $ centrally more 

 or less black ; anus not white-marked. Wings with areolet small and 

 convergent above ; radix white. 



There appear to be but seven palaearctic species contained in this 

 genus, although Cryptus ge?ninus, Grav., and four of Tschek's new species 

 are doubtfully referred to it by Schmiedeknecht. Much confusion has 

 existed in our collections regarding the first two here enumerated, of which 

 the sexes are so dissimilar as to render their association for long a matter 

 of considerable doubt. 



Table of Species. 

 (6). I. Thorax black. 

 (5). 2. Hind tibiae not basally white. 

 (4). 3. Scutellum white and anus not black in $ ; 



$ with three hind tarsal joints white i. PORRECTORIUS, Fab. 



(3). 4. Scutellum and anus black in 5 ; (^ with two 



hind tarsal joints white 2. BRACHYURUS, Grav. 



(2). 5. Hind tibiae distinctly white basally 3. ALTERNATOR, 6^raz/. 



(i). 6. Thorax mainly red 4. MINUTORIUS, /^^f^. 



I. porrectorius, Fab. 



Ichneumon porrectorius, Fab. M. I. 260, 6 . Ischnus porrectorius, Gr. I. E. i. 642 ; 

 Ste 111. M. vii. 20S, i . Iclmeumon assertorius, Eab. E. S. ii. 140, 9 . Cryptus 

 asserlorius, F"ab. I'iez. 76 ; Gr. I. E. ii. 495 ; Ste. 111. M. vii. 281, 9 ; Ilolmgr. Sv. 

 Ak. Hand!. 1854, p. 55, <i ? ; Tasch. Zeits. Ges. Nat. 1865, p. 90, ?. Habrocrypttis 

 assertorius, Thonis. O. E. v. 498 et xxi. 2363, S ? . Var. Isclimts sannio, Gr. I. E. i. 

 646 ; Ste. 111. M. vii. 208, i ; Habrocryplus brac/iyurus. Thorns. O. E. v. 499 et xxi. 

 2363, excl. 9. Var. Cryptus sedulns, Gr. I. E. i. Suppl. 701 ; Ste. 111. M. vii. 282, 9 ; 

 ('! ) C. unicinctjis, Gr. I. E. ii. 470, i. 



The c? is a very slender insect ; the $ broader and distinctly pubes- 

 cent. Head of $ with palpi elongate, stramineous; clypeus, all the 

 orbits, cheeks and whole or centre of face, white ; of ? with clypeus 

 discreted and basally longitudinally sub-carinate ; internal orbits, a mark 

 on the labrum, and sometimes also on the clypeus, white. Antennae 

 slender and white-banded in both sexes, with scape fulvous beneath ; of $ 



