isrg. 199 



DESCRIPTIOXS OP NEW SPECIES OF BEITISH ACULEATE 

 SYMENOPTERA. 



BY EDWAED SAUNDERS, E.L.S. 



PoMPiLUs coNSOBEiNirs, Dbm., Hym. Eur., i, p. 79. 



Closely allied to gibbus in size and general appearance, but easily distinguished 

 from it by the long hairs on the metathorax ; the head of this species is also much 

 more densely covered with black hairs, and the 3rd submarginal cell is sub-quadrate, 

 almost as in P. spinus. 



c^ & ? taken by myself at Hayling Island in July ; ? by J. B. 

 Bridgman, Esq. 



P. CHALTBEATUs, Schdtc., Kroyer's Nat. Tidskr., i, p. 338, No. 7. 



Very closely allied to gibbus, but I think clearly distinct. The $ may be 

 known at once by the 5th and 6th segments of the body, beneath, being longitudi- 

 nally depressed, the 5th emarginate and the 6th deeply and somewhat squarely 

 notched ; the $ differs in having the clypeus very smooth and shining in front, its 

 margin not raised at the sides, and with only two stiff setse projecting from above 

 the glabrous marghi, whereas, in gibbus, the apical margin of the clypeus has some- 

 what large and irregularly scattered punctures, the sides are slightly raised and 

 margined, and there is a series of several long sette above the bright apical margin. 

 The apical segment of the body is also much more densely covered with black hairs 

 than in gibbus, and the 3rd sub-marginal cell is more triangular. 



cJ & , Cliobliam and Southwold. ^ , Worthing. 



MiMESA EQTTESTEis, Eab., upud Wesmael, nee SLuckard. 



I have several specimens of a Mimesa with a red base to the body, whicli clearly 

 belong to the species that Wesmael calls equestris. Fab. If his views of the synonymy 

 be correct, and he seems to have considered them very carefully, our species that we 

 have hitherto called equestris will have to be called in future Shuekardi. It may be 

 separated at once by its narrow petiole, which has a carina down its middle (in 

 Shuckai-di the petiole is wide, ilat and rugose) ; from bicolor, which it very closely 

 resembles, it may be known by its shorter petiole, its more strongly punctured 

 thorax, and strongly punctured mesopleurse ; in bicolor the puncturing of the meso- 

 pleurse is almost unobservable. 



I have taken this species at Southwold and Chobham. 



OxTBELTJS MAisTDiBULAEis, Dbm., Hym. Eur., i, p. 514. 



Closely allied to uniglumis, but with the mandibles flavous at the base and ru- 

 fescent at the apex, the spots of the body of a more distinct yellow, and the punc- 

 turing of the 2ud and following segments much stronger and more scattered ; 

 thorax with the tubercles, and a spot on each side of the collar, flavous ; the femora 

 are black, with their apices pale, and the front pair is broadly flavous beneath ; the 

 tibi£B are flavous, more or less reddish at their extremities, the 1st and 2nd pairs 

 with a streak behind, and the 3rd with a broad band near the apex, black ; tarsi 

 rufescent. 



