98 [October, 



accurately, adopts the name of neglectus for it, and says that he has 

 seen specimens so named by Dahlbom himself in which the 3rd sub- 

 marginal cell was triangular, and, therefore, assumes that Dahlbom 

 made an error in his description. 



Both Wesmael and Thomson, however, agree that the £ to which 

 Dahlbom gave the name of minutulus is the $ of the present species ; 

 and T have, therefore, adopted this name, as it clearly has the priority, 

 having been used by him in his "Dispositio," in 1842 ; whereas cel- 

 lularis and neglectus were only described in 1845. 



2. PompiJus Wesmaeli, Thorns., Op. Ent., p. 221. Hym. Scand., iii, 



p. 149. 



Same coloration, &c, as gibbus and its allies, but easily dis- 

 tinguished, as the $ has the apical ventral plate slightly carinated, 

 and armed near the apex with a long pendant 

 spine ; the $ is more difficult to recognise, but 

 may be known by the somewhat carinated, com- 

 pressed apical segment beneath. lateral view 



I called this species in my notes (ante, p. 68) ventral view. 



abnormis, Dahlb., but I see now that it clearly pica se SS, <j°. 

 belongs to Wesmaeli. Abnormis also has the pendant spine in the 

 <£, but has the base of the ventral plate flat, and an oval fovea before 

 the spine. 



3. JPriocnemis parvulus, Dahlb., Hym. Eur., i, p. 460. 



Black, with the two basal segments of the abdomen red, the basal segment 

 in the <£ often with a longitudinal black stripe at its base. 



Head and thorax finely punctured, covered with a fine sericeous, and in some 

 lights silvery, pubescence, the pubescence on the coxae and mesopleurae denser and 

 more distinctly silvery, wings slightly dusky with a darker stripe through the 2nd 

 and 3rd sub-marginal cells, and a darker patch in the 3rd discoidal cell ; beyond the 

 apex of the 3rd sub-marginal is an irregularly-shaped cleai*er spot, sometimes 

 wanting ; the apex of the wing widely dusky. Abdomen shining, 3rd and following 

 segments covered with a fine sericeous-grey pubescence ; 5th segment in 

 the $ with a few longer hairs, and 6th rather thickly covered with them. 

 Beneath with a few scattered hairs. Apical segment carinated at the 

 apex ; o* with the anal ventral valve hairy and narrow, slightly Apical 

 widened at the apex and truncate (see figure) ; posterior calcaria not ^in<iUu» 6 

 two-thirds as long as the basal joint of the tarsi. Length, 6 — S mill. 



Very distinct from any of the others of the exaltqtus group, in 

 the shape of the ventral anal plate of the $ , and the absence of the 

 clear round spot in the wings of the ? . 



