434 HYMENOPTERA. 



4. CEMONUS PARALLELUS. 



Stigmus parallelus, Say, Bost. Journ. i. 378. 1. 

 Hab. Mexico. 



5. CEMONUS FRATERNUS. 



Stigmus fraternus, Say, Narr. Exped. St. Peter's River, Append. 

 p. 73. 



Hab. Pennsylvania. 



6. CEMONUS PUSILLUS. 



Cemonus? pusillus, Say, Bost. Journ. i. 378. 2. 

 Hab. N. America (Indiana). 



7. CEMONUS INORNATUS. B.M. 



Cemonus inornatus, Say, Narr. Exped. St. Peter's River, Append. 

 p. 73. 2. 



Hab. Pennsylvania. (Coll. E. Doubleday, Esq.) 



Genus 13. PSEN. 



Psen, Latr. Precis (1796). 

 Sphex, pt., Fabr. Ent. Syst. Supp. 243 (1798). 

 Pelopceus, pt., Fabr. Syst. Piez. 202 (1804). 

 Trypoxylon, pt., Fabr. Syst. Piez. 180 (1804). 



1. PSEN ATER. PI. X. fig. 2. B.M. 



Sphex atra, Fabr. Ent. Syst. Supp. 244. 18. 19. 



Panz. Faun. Germ. 72. 7. 

 Pelopoeus unicolor, Fabr. Syst. Piez. 204. 10. 

 Pelopceus compressicornis, Fabr. Syst. Piez. 204. 11 $ . 

 Trypoxylon atratum, Fabr. Syst. Piez. 182. 5 $ . 

 Psen atra, Panz. Krit. Revis. ii. 108. 

 Psen pallipes, Spin. Ins. Lig. i. 94. 2. 

 Psen serraticornis, Jurine, Hym. t. 8. gen. 6 $ . 

 Psen ater, Van d. Lind, Obs. ii. 102. 1. 



Latr. Hist. Nat. xiii. 300? 



Shuck. Foss. Hym. 225. 1. 



St. Faro. Hym. iii. 40. 1. 

 Mimesa atra, Dahlb. Hym. Europ. i. 2. 3. 

 Mesopora ater, Wesm. Hym. Foss. Belg. 116. 6. 



Hab. Britain ; France ; Italy ; Germany ; Belgium ; Scandinavia. 



