HYMENOPTERA. 273 



This species closely resembles the C. vectis, but differs in 

 having snow-white pubescence on the face, continuous bands on 

 the abdomen, and also in wanting the transverse depressions on 

 each segment ; the fifth segment also is not produced at its apical 

 lateral margins. 



Genus 29. DIOXYS. 



Trachusa, pt., Jurine, Hym, p. 253. 

 Heriades, pt., Sinn. Ins. Lig. fasc. 3. p. 198. 

 Dioxys, St. Farg. 4' Serv. Ency. Meth. x. 109. 



1. Dioxys cincta. 



Trachusa cincta, Jurine, Hym. p. 253. t. 12. f. 36. 

 Heriades cincta, Spin. Ins. Lig. fasc. 3. p. 198. 2. 

 Dioxys cincta, St. Farg. Sf Serv. Ency. Meth. x. 109. 1. 

 St. Farg. Hym. ii. 514. 2. 



Hab. South of France ; Italy. 



2. Dioxys Pyrenaica. 



Dioxys Pyrenaica, St. Farg. Hym. ii. 515. 3. 

 Lucas, Explo. Sc. Alger, iii. 206. 138. 



Hab. The Pyrenees (Bareges) ; Algeria (Oran), 



3. Dioxys rufiventris. B.M, 



Dioxys rufiventris, St. Farg. Hym. ii. 516. 4. 



Lucas, Explo. Sc. Alger, iii. 207. 139. t. 9. f. 5. 



Hab. Algeria (Oran). 



4. Dioxys maura. 



Dioxys maura, St. Farg. Hym. ii. 516. 5. 



Lucas, Explo. Sc. Alger, iii. 208. 141. t. 9. f. 7. 



Hab. Algeria (Oran). 



5. Dioxys dimidiata. 



Dioxys dimidiata, St. Farg. Hym, ii. 514. 1, 

 Hab. Versailles. 



6. Dioxys chalicoda. B.M. 



Dioxys chalicoda, Lucas, Explo. Sc. Alger, iii. 207- 140. t. 9. f. 6. 



Hab. Algeria (Oran). 



o2 



