Pezomachus.^ BRITISH ICHMEUMONS. 229 



late in May to early in October, at Tuddcnhani Fen, Bentley Woods, 

 Dodnash, Sproughton, Foxhall, Lakenheath, Harnby Broad, Henstcad and 

 Dunwich, in Suffolk ; as well as at Ryde in the Isle of Wight, Faversham 

 district of Kent, Brockenhiirst, Lyndhurst and Matley Bog in the New 

 Forest. It occurs upon low herbage of any kind, from Spari^a?iiutn to 

 Erica, though never, like the very similar /-". intermedins, upon trees and 

 bushes. 



48. Forsteri, Bridg. 



Pezomachus Foersteri, Bridg. Trans. Ent. .Soc. Lond. 1S86, p. 343, 9- 



Head rather narrow behind the eyes. Antennae reaching to about the 

 apex of the first segment ; basal ilagellar joint sliglilly longer than second 

 and two-and-a-half times as lung as wide, fifth rather longer than wide. 

 Thorax rather stout, scarcely longer than high; nieso- and meta-thorax about 

 equal in length ; the transverse costa of the latter terminates laterally in a 

 short and rather acute spine. Abdomen ovate, apex of third segment the 

 widest ; pubescence scattered ; first segment with the spiracles scarcely 

 projecting, about three times as wide at the apex as at the base, and twice 

 as long as the width at the apex ; terebra almost longer than the first 

 segment. 



Black, second and base of third joint of antennae red. Legs red ; apex 

 of posterior femora, apex and before base of intermediate and posterior 

 tibiae, and apical tarsal joints very faintly brown. Length, 2| mm. 



Similar to P. instabilis, but antennae and thorax shorter. 

 Taken by Dr. Capron near Shere, in 1884; three co-types are in my 

 collection. 



49. cursitans, Grav. 



Cryptiis cursitans. Fab. Piez. 91 (?). Pezomachus cursitans, Gr. I. E. ii. 923 ; Ratz. 

 Ichn. d. Forsl. i. 153 ; iii. 149 ; Fcirst. VViegm. Arch. 1850, p. 200, 9 ; Thonis. O. E. x. 

 1014, (5 9. Heiiiimachus variabilis, Ratz. Ichn. d. Forst. iii. 15S, i. H. rufoliiutus, 

 Bridg. Trans. Ent. Soc. 1SS3, P- '5Sf <^- ^) Pezomachus elaphrns, Furst. Wiegm. Arch. 

 1851, p. 44, (J. 



? . Head slightly narrowed behind eyes, cheeks not buccate ; sulcus 

 narrow but distinct ; costa strongly inflexed ; clypeus elevated and rounded 

 at apex ; mandibles distinctly tuberculate at apex. Antennae long and 

 slender ; joints one to four of flagellum especially elongate ; first distinctly 

 longer than second ; fifth one-and-a-half times as long as broad. Meso- 

 notum sub-triangular, as long as metanotum ; petiolar area oblique, distinct, 

 dull, punctulate and narrow above, its basal costa distinct, especially 

 at sides ; acetabula scarcely extending beyond middle of mesosternum. 

 Abdomen sub-glabrous, finely alutaceous, diffusely punctured, with very 

 short pubescence ; petiole rather broad at base, spiracles slightly pro- 

 jecting ; post-petiole broad but not transverse, its side-margins acute ; 

 terebra as long as basal segment. Legs rather long, the anterior ones 

 slender, their tibiae not intumescent. 



Head black ; palpi blackish or brownish ; mandibles red with their 

 extreme apex brown. Antennae with at least the first twelve joints red, 

 then browner towards apex. Thorax black, sumLtimes with two red spots 

 on mesonotum. Abdomen with segments one and two red ; third red, or 



