268 HYMENOPTERA. 



rarely the petiole and base of the first segment only, red ; the 

 apical margins of all the segments white ; the petiole nearly as 

 long as the abdomen. 



The male is rather smaller, and has the antenna entirely black ; 

 the mandibles slightly ferruginous ; the tegulse more or less 

 ferruginous : this sex is also usually more pubescent ; the petiole 

 and first segment red ; but frequently the petiole is more or less 

 fuscous, sometimes black. 



This species very closely resembles EnocUa albisecta; its prin- 

 cipal differences consist in having a longer petiole and the meta- 

 thorax substriated ; the petiole, legs and mandibles are also more 

 or less red. 



Hab. Gambia. 



Genus 14. DOLICHURUS. 



Pompilus, pt.. Spin. Ins. Lig. fasc. 2. 52 (1808). 

 Pison, Latr. Gen. Crust, et Ins. iv. 58 (180.9). 

 DoHchurus, Latr. Gen. Crust, et Ins. iv. 38/ (1809). 



1. DOLICHURUS CORNICULUS. B.M. 



Pompilus corniculus, Spin. Ins. Lig. fasc. 2. 52. 

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

 Dohchurus ater, Ijatr. idem, 3S7- 



Van d. Lind, Obs. i, 95. 

 Dolichurus corniculus, St. Farg. Encycl. Meth. x. 450. 



Shuck. Foss. Hym. 85. 1. 



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



St. Farg. Hym. iii. 327. 1. 



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



Hah. Europe. 



Genus 15. AMPULEX. 



Sphex, pt., Fahr. Ent. Syst. ii. 198 (1793). 

 Chlorion, pt., Fabr. Syst. Fiez. 217 (1804). 

 Ampulex, Jurine, Hym. p. 134 (1807). 



1. Ampulex compressa. B.M. 



Sphex compressa, Fabr. Ent. Syst. ii. 206. 32 ; Mant. i. 275. 25. 

 Chlorion compressum, Fabr. Syst. Piez. 219. 7- 



Latr. Hist. Nat. Crust, et Ins. xiii. 294. 



Westw. Trans. Ent. Soc. Lond. iii. 227 (1843). 



