178 Mr. E. Saunders' Synopsis of 



testaceous ; scutellum fulvous ; mesopleurse with a large red spot ; 

 metathorax unspotted, or with red spots, or (var. signata) with two 

 large yellow spots. Abdomen shining, brown, spotted or banded 

 with yellow, the extreme base of the 1st segment black, and often 

 with the margins of all the segments more or less black; the 

 extent of the yellow colour varies from a single round spot on each 

 side of the 2nd segment, and a square spot on the 5th, to a com- 

 plete yellow band on each segment ; beneath the colour varies 

 frona uniform brown to brown with an entire band on each seg- 

 ment ; 5th ventral segment with a tuft of black hairs on each side ; 

 6th flat, truncate at the ajjex, the sides of the truncature with 

 curved spines. Legs fulvous, the base of the femora black ; pos- 

 terior tibiae armed outwardly with pale spines of irregular length. 

 Length, 7— 13mm. 



Hah. Common and generally distributed, April to 

 July. 



1 have only described this species in general terms, 

 not specifying all the varieties, as, with the exception of 

 the var. vs^ith the entire bands, " signata," they are in no 

 way constant, and merge into one another almost im- 

 perceptibly. One of the prettiest varieties is that where 

 the apex of each segment is bordered with black, and the 

 yellow spots well defined. 



13. Nomacla horealis, Zett. 



Zett., Ins. Lapp., p. 470 ; Smith, Cat. Brit. Hym., 2nd 

 ed., p. 112. 



Closely allied to ruficornis. Mandibles acute ; scape of the 

 antenna) and mesothorax entirely black in both sexes ; tubercles 

 and tegulae piceous. Abdomen dark brown, with yellow lateral 

 spots, the brown colour much suffused with black ; femora in 

 the 2 clothed with prominent black hairs outwardly. 



(? . Differs from that of ruficornis in having the scape of the 

 antennae entirely black, the clypeus with only the margin pale, and 

 the pubescence generally composed of thicker hairs, and in having 

 the posterior femora outwardly more densely hairy. 



2 . Differs from ruficornis in having the mesothorax without 

 red lines, the brown colour of the abdomen darker and more 

 suffused with black, and the posterior femora outwardly clothed 

 with bristly black hairs. Length, 9 — 11 mm. 



Hah. 'PsiYSisitic on Andrena Clarkella ; rare. Hamp- 

 stead ; Hastings ; Glanvilles Wootton, Dorset ; Ford- 

 lands, Devon ; Leominster; Carlisle; Colchester. 



