HYMENOPTERA. 91 



tooth in the middle between the lateral ones, independent of the 

 difference of coloration. 



14. ALASTOR LACHESIS. 



Alastor Lachesis, Sauss. Mon. Guepes Sol. 251. 3. 

 Hab. Tasmania. 



15. ALASTOR TASMANIENSIS. 



Alastor Tasmaniensis, Sauss. Mon. Guepes Sol. 253. 6. 

 Hab. Tasmania. 



16. ALASTOR TUBERCULATUS. 



Alastor tuberculatus, Sauss. Mon. Guepes Sol. 253. 7 

 Hab. Tasmania. 



17. ALASTOR EMARGINATUS. 



Alastor emarginatus, Sauss. Mon. Guepes Sol. 254. 8. 

 Hab. Tasmania. 



18. ALASTOR PUNCTULATUS. 



Alastor punctulatus, Sauss. Mon. Guepes Sol. 255. 10. 

 Hab. Tasmania. 



19. ALASTOR PTCTETI. 



Alastor Picteti, Sauss. Mon. Guepes Sol. 256. 12. 

 Hab. Tasmania. 



20. ALASTOR ALBOCINCTUS. B.M. 

 Male. Length 5 lines. Black : the head and thorax roughly 



punctured ; a minute spot behind the eyes and the clypeus white ; 

 the anterior margin of the latter truncate, straight. An elongate 

 spot on each side of the posterior margin of the prothorax, a 

 spot beneath the wings, and a minute one on each side of the 

 scutellum, white ; the wings subhyaline, with the anterior margin 

 of the superior pair darkest ; the scale black, the tibiae and tarsi 

 ferruginous. Abdomen : the basal segment much narrower than 

 the second and with a few scattered punctures ; the apical margins 

 of the first and second segments with a narrow white band. 



Hab. Tasmania. 



This is probably the male of A. punctulatus, which it closely 

 resembles, and with which it agrees in having the anterior margin 

 of the clypeus straight. 



