DOLICHURUS CORNICULUS. 87 



with their margins constricted ; the terminal segment emits at 

 its apex a valvular process, obtuse at the end, from which the 

 sting is exserted. 



1. Dolichurus corniculus. 

 .D. ater, nitidus, immaculatus. 



Porapilus corniculus, Spin. Ins. Lig. ii. 52. 41. 

 Pison ater, Latr. Gen. Crust, et Ins. iv. 58. 

 Dolichurus ater, Latr. Gen. Crust, et Ins. iv. 387. 



Fan d. Lind. Obs. i. 95. 1. 



Dahlb. Hym. Europ. i. 57. 1. 



Dolichurus corniculus, St. Farg. Encycl. Meth. x. 450 ; Hym. iii. 

 327. 1. 



Shuck. Foss. Hym. 85. 1. 



Dahlb. Hym. Europ. i. 29. 13. 



Steph. Illustr. Hand. Supp. vii. 14. t. 42. f. 1. 



Wesm. Hym. Foss. Belg. 70. 1. 



Female. Length 4^ lines. Black and shining ; the head strongly 

 punctured, the tubercle in the middle of the face concave above; 

 the clypeus with a raised sharp carina in the middle. Thorax 

 strongly punctured ; mesothorax with two impressed longitu- 

 dinal lines on each side, the inner one longest ; the superior 

 surface of the metathorax enclosed by an elevated line, forming 

 a truncated triangle, with three carinse in the middle of its 

 base, between which and at the sides it is transversely wrinkled; 

 the wings subhyaline, the nervures and tegulse rufo-piceous ; 

 the joints of the legs rufo-piceous ; the tibiae and tarsi some- 

 times obscurely rufo-piceous. Abdomen very smooth and 

 shining ; the apical margins of the segments and the apex rufo- 

 piceous. 



The Male is rather smaller, and has a pale spot on each side of 

 the clypeus ; the mandibles ferruginous ; the antenna? and legs 

 rufo-piceous; the wings iridescent, and the abdomen closely 

 punctured. 



Although this species is found throughout Europe, and is not 

 a scarce insect in Denmark, Sweden, or Finland, it has only 

 occurred once in this country. Both sexes were taken by 

 Dr. Leach, in Devonshire, some years ago. These specimens are 

 in the British cabinet of the National Collection. 



