Catalogue of British Ichneumonidce. 161 



Hyperacmus crassicornis, Gr. 



Exochus crassicornis, Gr., I. E. ii. 347, 221, ? . 

 Hyperacmus crassicornis, Holm., Mon. Try. Suec. 



322, ? ; Brischke, D. Ichn. d. Prov. W. u. 0. 



Preus. 108, a" , ? • 

 This species has been taken by Dr. Capron in the 

 neighbourhood of Shere during the past summer. 



Bassus Holmgreni, n. s. 



Abdominis medio, pedibus, antennisque rufis, trochan- 

 teribus, coxisque anticis flavis posticis nigris, facie et 

 genis ^ , clypeo et orbitis internis ? , flavis. 



Head shining, finely punctured, narrow behind the 

 eyes ; thorax very shining ; punctures almost obsolete ; 

 metathorax wrinkled ; supero-medial area distinct, rather 

 narrower in front than behind ; 1st abdominal segment 

 and base of 2nd rather coarsely scabrous ; remainder 

 obsoletely punctured ; 1st segment of female rather 

 longer than wide, slightly tapering from base to apex, 

 grooved to bej^ond the middle ; tubercles not distinct ; 

 2nd and following segments transverse ; 3rd the widest, 

 slightly compressed at the apex ; 1st segment of the male 

 one-third longer than wide ; the widest part of the abdomen 

 the 4th and 5th segments. Wings without an areolet ; 

 transverse cubital nervure short ; transverse anal nervure 

 divided in or just below the middle. Legs slender. 



$ . Black ; antennae red, scape beneath, black above ; 

 mouth, clypeus, a small spot just above the base 

 of the mandibles and internal orbits, coxse, trochanters, 

 base of wings, and tubercles, yellow; apex of 1st seg- 

 ment, 2nd to 4th entirely, 5th except fuscous dorsal spot, 

 and legs, red ; base of hind ones faintly fuscous ; hind 

 coxae, greater part and apical joint of all the tarsi, dark 

 brown or black ; stigma brown ; apex yellowish ; nervures 

 brown. 



<? . Only differs in having the antennae reddish brown, 

 scape black, apex beneath yellow ; mouth, front part of 

 cheeks, face, and inner orbits just above the antennae, 

 yellow ; base of 2nd segment dark brown, and 5th seg- 

 ment almost entirely red. Length 4*5 — 5 mm. 



This beautiful little Bassus belongs to Holmgren's 

 div. ii. B. b. a. 



TRANS. ENT. SOC. 1882. — PART II. (jULY.) Y 



