PEMPHREDON LUGUBRIS. 175 



Genus 8. PEMPHREDON. 



Crabro, pt., Fabr. Ent. Syst. ii. 293 (1793). 

 Sphex, pt., Panz. Faun. 'Germ. 52 (1804). 

 Pemphredon, Latr. Hist. Nat. Ins. xiii. (1805). 

 Cemonus, Jurine, Hym. 214 (1807). 



Head large, subquadrate ; eyes prominent and ovate ; antennae 

 inserted at the base of the clypeus, not approximate, subserrate 

 in the male ; clypeus transverse ; labrum small and triangular ; 

 mandibles stout, their apex dentate. Thorax ovate ; the meso- 

 thorax very convex : the superior wings with one elongate mar- 

 ginal and two complete submarginal cells ; the first submarginal 

 as long as the marginal cell, and receiving the first recurrent 

 nervure in the middle; the second submarginal quadrate, receiving 

 the second: recurrent nervure near its base ; the legs very slightly 

 spinose. Abdomen ovate-lanceolate, petiolated, the petiole 

 slightly curved; terminated by an acute spine in the male, 

 canaliculated in the female. 



1. Pemphredon lugubris. 



P. ater, pubescens ; capite thoraceque subrugosis ; metathorace 

 confertim rugoso, margine oblique striato ; abdominis petiolo 

 longo. 



Crabro lugubris, Fabr. Ent. Syst. ii. 302. 30. 

 Sphex unicolor, Panz. Faun. Germ. 52. 24. 

 Cemonus unicolor, Panz. Krit. Revis. ii. 187. 



Jurine, Hym. t. 11. gen. 28. 

 Cemonus lugubris, Jurine, Hym. 214. 



St. Farg. Hym. iii. 94. 1. 

 Pemphredon lugubris, Latr. Hist. Nat. Ins. xiii. 325. 



Fabr. Syst. Piez. 315. 2. 



Van d. Lind. Obs. ii. 80. 4. 



Shuck. Foss. Hym. 196. 1. 



Zett. Ins. Lapp. 441. 1. 



Dahlb. Hym. Europ. 259. 159. 



Wesm. Hym. Foss. Belg. 118. 1. 

 Pemphredon luctuosus, Shuck. Foss. Hym. 197. 2. var. $ . 



Female. Length 5 lines. Black ; head and thorax subopake, 

 the abdomen shining ; the face closely covered with elongate 

 punctures which run into strise, the clypeus and vertex with 

 distant punctures; the head with long griseous pubescence; 

 the mandibles highly polished. Thorax with griseous pubes- 



