6Z Arfliur M. Lea: 



dinfjton lens each hair can he [ticked out when the insect is viewed 

 from the side ; in the others of the oeniis this cannot lie done owing 

 to their extreme sliortness. The prosternal process is rather more 

 parallel-sided than in orientalis, and ratlier more deeply notched at 

 apex, although less so than in minuta. 



Althouffh Mr. Cox and I examined manv nests of the ant named, 

 no more than the three specimens descrihcd were obtained ; from a 

 close-by nest to that from which they were taken, Mr. Cox ol)taiiied 

 several specimens of R. ovafa, and these represent our total captures 

 of Rodwdtjui in its nests in New South Wales. 



*Rndv'ayia orientalis, Lea. (Fig. 4.) 



Recently (September and October, 1910), about Sydney, Otford. 

 etc., Mr. Cox and I saw thousands of specimens of this species in 

 nests of the green-head {Ectatomma jnetall icuiii). In some large nests, 

 not uncommonly hundreds were in sight at die same time. Mr. 

 Davey has also taken the species at Lai Lai (Victoria). 



In addition to the previously recorded species of ants, it is now 

 known to occur with Amhlyoiione australis, Polyrhacliis heracantha, 

 Camponotus aeneopiloi^us, C. nigrietps, C. claripea, MyvDiecia 

 pyriforniis, Mynnecia, sp., and Iriduinynnex. 



The elytra of some specimens seem more pointed than on others, 

 but this is probably due to shrivelling at the sides. The prothorax 

 also appears larger on some specimens than on others, but this seems 

 due to its base being more extended over the elytra. The colour also 

 is slightly variable in intensity of shade. 



*R()(Iirayi(/ nu/iKta. Lea. 



Specimens of this species are usually taken fiom amongst the eggs 

 and larvae of the ants. 



Numerous specimens from Sydney differ from Tasmanian ones in 

 being a trifle larger, and rather more densely clothed : but as there 

 appear to be no other distinctions they probably rejiresent a variety 



only. 



*R()«I irayia nvafa. Lea. 



Recently taken by Mr. Cox and myself from nests of Stennmma 

 /()tif/lrej)s at Otford ; Mr. Davey has taken it at Lai Lai and else- 

 where in Victoria from nests of Pnlyrlinrliis /te.racniit/ia, J'. Froygatti 



and I'dl i/rlKtrli IS, s)>. 



CnLAMYDOrSIS. 



Of this remarkable genus sixteen species are now known to me, 

 and seven others (including Orectosrelis) have lieen described. Species 

 have now l)cen taken in all the Australian States, and it is probable 



