44 HYMENOPTERA. 



between the male of this species and that of P. dilatatus, 

 which it greatly resembles ; the prominent differences will be 

 found in the figures of the heads of these species given in the 

 plate that accompanies this volume. (See Figures 8 and 8*.) 

 The male is black and closely punctured, with a fine silky- 

 white pubescence ; the face, anterior half of the scape, a line 

 on the mandibles and also on the collar, the latter interrupted, 

 or much attenuated in the middle ; the tubercles, a spot be- 

 fore the tegulae, and a triangular one on each side at the base 

 of the scutellum, white ; the anterior tibiae in front, and the 

 base of the intermediate and posterior pairs, white ; the an- 

 terior tarsi and the claw-joints of the intermediate and pos- 

 terior pairs, rufo-testaceous. The flagellum of the antennsg 

 fulvous beneath ; the extreme lateral portion of the apical 

 margin of the basal segment of the abdomen with an oblong 

 patch of white pubescence. The female has the basal seg- 

 ment of the abdomen red. 



Andrena Hattorfiana (Fam. Andrenidce). I took a 

 number of examples of this very local species at Kingsdown 

 in August last. 



Andrena Cetii. This local insect occurred plentifully at 

 Kingsdown ; Mr. S. Tibbs discovered a new locality for it 

 near Croydon, and Mr. B. Newcomb took it at Dartford. 



Andrena simillima. Both sexes were taken by myself 

 between Kingsdown and St. Margaret's Bay, on the flowers 

 of the blackberry. 



Nomada armata (Fam. Cuculince). I captured five spe- 

 cimens of the female of this hitheito extremely rare species at 

 Kingsdown in the month of August last; the only examples 

 which had been previously taken, were three by Dr. Leach 

 in Devonshire; one by Mr. S. Stevens in the same county; 

 three by Mr. Dossetor in Wales, and one or two have oc- 



