British Hynienoptera. 181 



EuMENES, Latr. 



Latr., Hist. Nat. xiii. 360. 



Like Odynerus in coloration, but at once distinguishable 

 by the narrow 1st segment of the abdomen, which is not 

 nearly half as wide as the following one. Antennae of 

 the c? terminating in a hook. 



1. Eumencs coarctata, Linn. 



Linn., Syst. Nat., ed. x., vol. i., p. 573 ; Smith, Brit. 

 Foss. Hym., &c., p. 197, pi. v., fig. 2. 



Black ; rugosely punctured ; head and thorax and 1st 

 abdominal segment covered with short brownish hairs. 

 Clypeus entirely in the ^ , with only a spot at the base in 

 the 2 , prothorax with a line in front, tegulae, post- 

 scutellum, a spot under each wing and on each side of 

 the metathorax (occasionally), a band at the apex of the 

 first four abdominal segments, a spot on each side of the 

 2nd segment and sometimes also of the 1st, yellow. 

 Femora black, their apices and the tibiae and tarsi 

 yellow. Wings brown along the region of the externo- 

 medial cell. Head, thorax, scutellum, and 1st abdominal 

 segment closely and rugosely punctured ; the last nar- 

 rowly petiolated at its base, and campanulate, with a 

 slight longitudinal central channel, its apical margin 

 smooth, raised, and yellow ; 2nd and following segments 

 punctured, but much less rugosely so than the first, and 

 more or less shining, covered with a short pubescence. 

 Length 13 — 15 mm. 



Hah. Local. Chobham ; Blackwater, and Parley 

 Heath, Hants ; Sandhurst, Berks ; Sunning Hill ; Wey- 

 bridge. 



Section 11. 

 Hairs of body more or less plumose or branched. 



1. Tongue obtuse, emarginate at the apex . . .. .. Obtusilinriues. 



2. Tongue acute . . . . . . . . . . . . Acutilingucs. 



OBTUSILINGUES. 

 (2) 1. Three subniarginal cells ; thorax densely hah-y . . Colletes. 

 (1) 2. Two submarginal cells ; thorax almost naked . . Frosopis. 



