ThaumaMypiiS.'] BRITISH ICHNEUMONS. 239 



This species has long stood in the British list upon very shallow 

 authority, and I am in hut a poor position to uphold its right to inclusion 

 therein, since I possess only a single, somewhat douljtful example, captured 

 several years ago by Rev. T. A. Marshall at Nunton in Wiltshire. 



THAUMATOTYPUS, Forsfer. 



Forst. Verb. pr. Rhcinl. 186S, p. 172. 



Head sub-globose, eyes small, cheeks elongate with no sulcus. Fla- 

 gellum stout ; scape sub-cylindrical and apically hardly excised ; basal 

 flagellar joint one-third longer than the second. Thorax very finely 

 rugose ; metathorax with the petiolar area reaching beyond its centre and 

 the apophyses distinct. Scutellum distinct. Abdomen with the second 

 and third segments connate, not discreted and occupying most of the 

 abdominal surface ; petiole elongate, post-petiole sub-constricted beyond 

 the prominent tubercles ; terebra hardly exserted and less than half length 

 of the basal segment. Wings wanting. 



Bridgman tells us the antennae are as in Pezomachiis ; Thomson says 

 that, as well as the legs, they are stout, but it appears advisable to retain 

 this somewhat anomalous genus in the Pezomachoides, since the conforma- 

 tion of the metathorax, which is described by Ashmead as " abruptly, 

 obliquely truncate behind, the truncature superiorly bounded by a sharp 

 carina," appears allied in its elongate petiolar area with the Stilpnides. 



I am, however, strongly of opinion that the single species is referable to 

 the Froclotrypidae. Mr. A. J. Chitty thinks it correctly here placed. 



I. Billupsi, Bridg. 



ThattmatotypHS Billupsi, Bridg. Trans. Knt. Soc. 18S2, p. 145, ?. Pczoniaclins 

 Billupsi, Thorns. O. E. x. 1018, <^ . 



Head smooth with the genal costa hardly inflexed and clypeus discreted. 

 Antennae seventeen-jointed ; flagellum stout and sub-filiform with joints 

 two to twelve sub-equal in length, the basal joint fully thrice longer 

 than broad and the fifth only slightly so. Meso- and meta-thorax sub- 

 equal in length and slightly transverse ; petiolar area excavate and 

 basally rounded, acetabulae occupying the entire mesosternum. Abdomen 

 oblong-oval, smooth and shining ; basal segment elongate and sub-linear, 

 attenuate towards its apex, with tubercles just behind the centre ; post- 

 petiole aciculate ; basal angles of second segment rounded. I^egs elongate 

 and slender with the calcaria short. Wings wanting. 



Piceous, with the abdomen paler and first flagellar joint basally flaves- 

 cent ; legs testaceous. Length, 2 mm. 



Bridgman says it was taken at Burford bridge in Sejitember, 18S1, and 

 that Dr. Ca|)ron had also taken an example of the same genus, probably 

 at .Shere in Surrey ; there are two specimens in his collecticjn, which I 

 possess. It is recorded elsewhere only by Thomson from Ringsjon, in 

 Skandinavia ; he describes the basal .segment as sub-rugosely punctate 

 and the legs as stouter than may be inferred from the English description. 



