58 POMPILUS PLUMBEUS. 



cell longer and the third submarginal cell subquadrate, never 

 triangular as in P. gibbus ; the anterior tarsi very slightly spi- 

 nose, not ciliated. 



Male. This sex resembles that of P. gibbus ; but the thorax 

 is shorter ; the head and thorax with a thin black pubescence ; 

 the wings as in the female. 



This species, although closely resembling P. gibbus, is very 

 distinct : the neuration of the wings is the most striking differ- 

 ence; but the absence of the regular cilia which distinguish 

 P. gibbus is a strong specific character. The species does not 

 occur in the London district, but has been taken, not rarely, at 

 Bristol ; it is also found in Yorkshire. 



5. Pompilus plumbeus. 



P. ater, cinereo-pubescens ; abdominis basi atro ; alis albis, 



apicibus nigris. Fcem. 

 P. plumbeus; antennis atris; alis anticis apicibus nigris. Mas. 



Sphex plumbea, Fabr. Mant. i, 278. 64 ; Ent. Syst. ii. 220. 92 $ . 



Rossi, Faun. Etrus. i. 127. 280. 

 Pompilus pulcher, Fabr. Ent. Syst. Supp. 249. 19 ? . 



Spin. Ins. Ligur. i. 69. 4. 



Van d. Lind. Obs. i. 307. 2 <? ? . 



Shuck. Foss.Hym. 49. 1, 



Dahlb. Hym. Europ. i. 42. 22 ? 



St. Farg. Hym. iii. 424. 11. 



Lucas, Explo. Sc. Alger. iii. 268. 2. 

 Pompilus plumbeus, Dahlb. Hym. Europ. i. 42. 21. & 444. 3. 



Wesm. Hym. Foss. Belg. 33. 5. 



Female. Length 3-4 lines. Black ; the clypeus, sides of the 

 face and the scape, densely covered with a silvery-grey pu- 

 bescence ; the mandibles ferruginous at their apex ; a longitu- 

 dinal impressed line runs from the anterior stemma to the base 

 of the clypeus. Thorax : the posterior margin of the prothorax 

 subangular ; the metathorax with a deep central longitudinal 

 impression ; the wings slightly coloured, the apical margins of 

 the anterior pair with a broad fuscous band, the nervures 

 black ; the legs covered with grey pile, the anterior tarsi ciliated, 

 and the intermediate and posterior tibiae with a double row of 

 spines. Abdomen : the apical margins of the segments with a 

 band of grey pubescence, slightly differing in width in different 

 individuals, and sometimes more or less interrupted. 



Male. Rather smaller than the female, the face with more of 



