Habrocryptus.] BRITISH ICHNEUMONS. 319 



and not very finely punctate ; black, with third, fourth, most of second 

 and extreme apex of first segment castaneous ; basal segment alutaceous, 

 slightly and gradually dilated apically and hardly explanate at the distinct 

 though inconspicuous spiracles ; valvulae exserted and black. Legs 

 slender, black, with front tibiae, apices of anterior femora and bases of 

 posterior tibiae ferrugineous ; three central hind tarsal joints determinately 

 pure white. Wings hyaline ; outer nervure of areolet somewhat short ; 

 radix white, tegulae black. Length, 7 mm. 



The above male, here first ascribed to H. hrachyiirtis, agrees much 

 better therewith than /. sannio, with which the latter has so long been 

 associated, and moreover I can nowhere find described anything like it. 

 The type is in my own collection. 



[I consider it probable that all the British references to Cryptus hos/i/is, 

 Grav., of which no mention whatever is made by Thomson, may be 

 assigned to the above species. The female was introduced as indigenous 

 by Desvignes on the strength of specimens in his own collection, and 

 subsequently found j)osition in Marshall's catalogues, in the latter of which 

 the author erroneously follows Taschenberg in presenting it as constituting 

 the male of II. b) achyurus. EJoth /. sannio and C. brachyurus are recorded 

 by Stephens. Gravenhorst's description (L E. ii. 512) of the true C. 

 hostilis, which is placed in Spilocryptus by Brischke, and as synonymous 

 with Microcryptiis nigrociiutus by Schmiedeknecht, will show how different 

 it is from H. sannio: — Palpi and mandibular mark red; antennae ferru- 

 gineous, with the scape fulvous or dull white beneath ; scutellum and 

 post-scutellum pale flavous. Abdomen narrower than the black thorax, 

 oblong or fusiform, with segments two to four, apex of first and base of 

 fifth, red ; basal segment sub-linear, with post-petiole broader ; legs red, 

 with all the coxae, hind trochanters, apices of their femora and their 

 tibiae, black ; wings somewhat clouded, with radix pale flavous and tegulae 

 wholly or partly testaceous. Length, ^-2)% lines.] 



Ste{)hens says he took both sexes in Darenth Wood, etc., with H. por- 

 rec/orius, in June. Bridgman records, " Cryptus hos/ilis, Grav.," from 

 Earlham in Norfolk, in July and September; I have seen the ^''hosti/is" 

 recorded by Bignell, from Plym bridge, at the end of September, it 

 certainly is a female of the present species. Professor Carr has, I believe, 

 taken this species at Nottingham College in December ; Martineau has 

 found it at Solihull, in September ; Capron once or twice at Shere ; and 

 Bignell gave me my male from the Plymouth district. 



3. alternator, Grav. 



Cryptus alletnator, Cr. I. E, ii. 5SS ; Ilolmgr. Sv. Ak. Ilandl. 1S54, p. 53; Tasch. 

 Zeits. Ges. Nat. 1865, p. 92, {, 9. C. atniulij>es, Tasch. lib. cit. p. 100, ?. Habro- 

 cryptus alternator. Thorns. O. E. v. 499, 6 9 ', cI l>l>. cit. xxi. 2364. 



Black. Head immaculate, with clypeus discreted, of c? broadly rounded 

 apically, of 9 small with epistoma prominent. Antennae centrally white- 

 banded and basally red in both sexes ; of $ slender and filiform ; of 9 

 with first flagellar joint about four times longer than broad. Thorax 

 immaculate ; metal horax of $ scabriculous, of S convex, with basal 

 lateral costae alone visible ; a{)ophyses wanting, spiracles small and 

 circular. Scutellum entirely black. Abdomen nearly as broad as thorax, 



