Hymenoptcra aculcata collected in Algeria. 415 



Odynerus (Lionotus), sp. (?) 



^ 1. Constantine, on Inula viscosa, 9, x, 93. (A. E. E.) 

 ? 1. Philippeville, 20, vi, 98. (F. I). M.) 



Apparently only differing from the preceding by having 

 the pronotal emargination narrower. 



These three species are so closely allied that I do not 

 feel that it would be safe on the material before me to 

 describe them as new. 



Odynerus {Microdynerus) pedunculatus, n. sp. 



Niger, flavo rufoque ornatus ; segmento primo abdominali maris 

 petiolato (Eumeniformi), foeminse forma consueta, in utroque sexu 

 plus minus rufotestaceo, apice flavo fasciato, -segmento secundo nigro 

 fascia apicali pallida, ipso apice membranaceo, punctorum serie 

 impressa. 



Black, head and thorax shining, strongly punctured, face entirely 

 clothed with silvery hairs in the $ ; mandibles piceous in the £ t 

 fulvo-testaceous in the 9 , clypeus white in the £ except at the apex. 

 Scape of the antennae in front white in the (J, fulvo-testaceous in the 

 $ , recurved apical joint in the £ testaceous, terminating in a black 

 knob, reaching to the base of the 11th joint, which is testaceous 

 beneath, the very short 12th joint being entirely of that colour. 

 Anterior margin of the pronotum truncate, with an entire narrow 

 pale band in the £ , two spots in the $ , angles nearly right angles, 

 sides of the pronotum nearly parallel, very long in the 2 j tegulse 

 whitish in the $ , fulvo-testaceous in the 9> wings slightly smoky, 

 darker along the costa and in the radial cell, scutellum nearly square 

 in the $ and fulvo-testaceous at the apex, transverse in the <$ , with 

 two apical pale spots, post-scutellum black in the £ , concolorous 

 with the scutellum in the $ , propodeum black with a strong central 

 impression, its sides clothed with silvery hairs, the impression 

 shining in the $?> sides of the propodeum gradually converging 

 towards the apex in the male and terminating in two rather long 

 pale spines which somewhat embrace the petiole of the body, sides 

 much more rounded in the ^ > the spines short, and further apart 

 not conspicuously pale, but piceous in colour, propodeal scales small, 

 not spinose ; abdomen slightly shining, punctured and clothed with 

 greyish, very fine pubescence, with the basal segment fulvo-testaceous 

 in both sexes, very narrow and petiolate in the <$ , of ordinary form 

 in the 9 > the extreme apex with a pale whitish band, in the $ the 

 base of the segment is black, and the apical margin is raised, callose, 



