268 BRITISH ICHNEUMONS. [Pycnocryptus. 



Hind femora stout, front tibiae sub-inflated ; hind tarsi shorter than tibiae. 

 Wings with areolet large, and a little convergent ; radial nervure short ; 

 nervellus opposite and intercepted below its centre. 



This genus differs from Cryplus in its sub-cylindrical thorax, the petiolar 

 area not reaching the centre of the metanotum, its sub-rotund spiracles ; 

 in the white radix and large, slightly convergent areolet ; in the elongate 

 terebra, shining and not alutaceous second segment, the fifth to the seventh 

 bearing a gradually expanding membrane ; and in the head and thorax in 

 both sexes being immaculate. 



A second species of this genus has been described in the female sex 

 from the Mediterranean region by Kriechbaumer, but it is hardly likely to 

 occur in Britain. 



I. peregrinator, Linn. 



Ichneumon peregrinator, Linn. F. S 402, ?. Cryplus peregrinator, Gr. I. E. ii. 605 

 et Suppl. i. 705, 9 , excl. var. I ; Tasch. Zeils. Ges Nat. 1865, p. 99, excl. 6 ; Tschek, 

 Verb, z -b. Ges 1870, p. 132, c5 ? • C. analis, Gr. I. E. ii. 560 ; Ste. III. M. vii. 

 289; Tascb. Zeits. Ges. Nat. 1865. p. 91, excl. 9. C. varipes, Briscb. Schr. Ges. 

 Uanz. 1 88 1, p. 332, i. Pycnocryptus peregrinator, Tboms. O. E. v. 500 et xxi. 

 2365, i 9. 



Shining and punctulate, with very slight white pubescence. Head 

 immaculate ; clypeus discreted, apically rounded, laterally narrowed, with 

 a transverse central impression ; epistoma slightly prominent ; frons im- 

 pressed and punctate. Antennae short and somewhat slender ; of $ with 

 the central joints seven to eleven white and the first flagellar barely more 

 than twice longer than broad. Thorax and scutellum black, the former 

 sub-cylindrical with the metanotum gradually declived, finely and densely 

 rugulose punctate, of S longitudinally ; lateral areae entire and punctate 

 with their apical margin fine and curved ; the petiolar small and more 

 coarsely sculptured, basally narrow, arcuate and usually incomplete ; 

 apophyses weak, spiracles small and sub-circular ; coxal areae of S pro- 

 duced. Abdomen very finely punctate, of ? ovate-fusiform, strongly 

 nitidulous and as broad as the thorax, of S linear-fusiform ; black with 

 segments two to four entirely, the first entirely in 5 and apically in S , the 

 fourth basally and laterally, red ; the sixth or fifth to seventh in ? pale ; 

 basal segment elongate, of 5 slightly curved laterally with the apical 

 angles obtuse, of S sub-linear, glabrous and scarcely at all explanate ; 

 post-peliole of ? very smooth, convex and slightly longer than broad ; 

 terebra about as long as abdomen. Legs short with femora stout ; red 

 with coxae, trochanters, apices of hind femora and of their tibiae, S with 

 anterior and ? sometimes with the intermediate femora basally, black. 

 Wings somewhat narrow, clouded ; tegulae dark, radix stramineous, nerve- 

 let of variable length ; areolet pentagonal with its sides only slightly 

 convergent. Length, 5-8 mm. 



The female, and rarely the male also, has the hind legs mainly black ; 

 sometimes the male has the intermediate femora to beyond their centre, 

 the hind femora and tibiae entirely, black, with or without the third and 

 fourth tarsal joints white ; the extent of the red coloration upon the basal 

 segment is also variable. Thomson says the male of Gravenhorst's 

 C. analis appears to belong to this species on account of its white radices, 



