40 BRITISH ICHNEUMONS. YMicrocrypius. 



basal segment only slightly explanate, glabrous and pubescent, sub- 

 canaliculate, apically sub-callose with normal spiracles ; post-petiole not 

 quite double breadth of petiole ; second segment finely and obsoletely 

 punctate. Legs slender and pale red ; anterior coxae, trochanters and 

 apices of the hind trochanters white, with the intermediate coxae basally 

 infuscate ; hind legs with coxae, base of trochanters, tarsi and apices of 

 tibiae and of femora, black. Wings somewhat ample, with radix and 

 tegulae white ; nervellus antefurcal and fenestrae not discreted ; outer 

 nervure of areolet obsolete. Length, 6 mm. 



My tentative association of these two species as sexes of the same is 

 entirely arbitrary and based solely upon the similarity of structure and 

 colour ; I have consequently detailed separately the descriptions and 

 records of indigenous captures. 



The female is so closely allied to AT. crefaius, Grav., that Thomson at 

 first (O. E. 857) thought that it was perhaps the female of that species, 

 and Schmiedeknecht leads one to the same conclusion. The male is 

 extremely like that of M. arridens, but will be easily distinguished by the 

 points enumerated under the latter species. 



S. "Found at Darenth Wood, in June" (Stephens). — Land's End 

 (Marquand), — I have examined the specimen attacked by Diociria Banm- 

 haueri, which Bignell took at Bickleigh, in June. It has always occurred 

 to me early in June and occasionally again in the autumn, usually by 

 sweeping the herbage of hedge bottoms, but sometimes on Herncleum 

 flowers, at Mildenhall and Glemsford, in Suffolk ; Burwell Fen, in 

 Cambs. ; and Lyndhurst, in the New Forest. Tuck has sent it to me, 

 taken at Tostock, as late as 25th September. 



? . This was introduced as British by Bridg.-Fitch in their " Intro- 

 ductory Papers " (Entom. 1882, pp. 226 et 275) on the strength of a 

 specimen in Marshall's collection taken at Bugbrooke, in Northampton- 

 shire. 



15. leucostictus, Grav. 



Cryptits leucostictus, Gr. I. E. ii. 538 ; Ste. 111. M. vii. 286 ; Tasch. Zeits. Ges. Nat. 

 1S65, p. 89, c5 . Microcryptns leucostictus, Thorns. O. E. ix. S56, i 9. 



Head nearly cubical ; cheeks buccate, long and broad, with the genal 

 costa continuous ; frons strongly and sparsely punctate ; $ with palpi 

 piceous, the, internal and part of the external orbits, the clypeus, a facial 

 dot and centre of mandibles, white ; $ with mouth and frontal orbits 

 broadly red. Antennae with scape only slightly excised apically ; of S 

 elongate, with the scape white, and flagellum brown beneath, with elevated 

 lines ; of $ with joints seven to eleven white. Thoracic spiracles small 

 and sub-circular ; $ with the pronotum and a dot beneath the radix white; 

 metathorax pubescent, irregularly punctate and somewhat shining ; areola 

 broader than long, rounded in front ; petiolar area discreted and reaching 

 beyond centre. Scutellum deplanate ; of c^^ always white, of $ usually 

 castaneous apically ; post-scutelluni of (^ also pale. Abdomen neither 

 alutaceous nor white-marked, red, with the first segment, except more or 

 less of its apex, black ; of ? sub-compressed posteriorly, with the terebra 

 shorter than half the abdomen. Legs red ; hind femora incrassate, closely 

 punctate, black; anterior tibiae spinulose ; of $ as in J\L abdoniinator ; 

 of i with coxae, trochanters, rarely the anterior femora towards their base, 



