Mr. R. E. Turner on Fossorial Ilymenoptera. 537 base, and without erect hairs ; ventral scopa short and com-pact, pure white, black on last segment. Hab. Trinity, Texas, Aug. 30, 1906, two {F. C. Bishopp). U.S. National Museum. M. occidentalis , Fox, has the mesothorax much more finely punctured, and the last dorsal segment with a deep transverse subapical groove, represented only by a transverse depression in penicillata. Bomhus rufocinctus, var. castoris, v. n. Butnbtis rufocinctus, Cress., var. 6, Franklin, Trans. Auier. Eut. Soc. xxxviii. p. 443. S • — Abdomen with yellowish-fulvous hair on first two dorsal segments, black on all the others. Hab. Beaver Creek, Montana, 6300 ft., Aug. 1913 {S. J. Hunter). The abdomen is coloured as in the male of B. vagans, Smith. There is much yellow hair on the head above, and a large yellow patch in the middle of the face. XLVIII. — Notes on Fussorial Ilymenoptera. — XVI. 13y liOWLAND E. TuiiNER, l^'.Z.S., F.E.S. On the Tliyunidae, Scoliidse, and Crabionidse of Tasmania. The following list includes all the known species of Thyunidse, tScoliidoe, and Crabronidaj occurring in Tasmania. 1 have already published notes on the Mutillidie of the island (Ann. & Mag. Nat. Hist. (8) xiv. pp. 429-450), and hope at a future date to give a list of the Psammochaiidae. I have not included the few species known from the islands in Bass Straits, which are politically part of Tasmania. The fossorial Hymenoptera are not very numerous in Tasmania, and a considerable number are common to Australia and Tasmania, the resemblance to the fauna of the mountainous districts of S.E. Australia being very marked. The absence of the conspicuous coloration of broad orange bands, so characteristic of Australia, is remarkable; I am not aware that this plan of colour occurs among the wasps of Tasmania, except in one or two strong-Hying Psammocharida3 which have doubtless found their way across from the mainland. In one case, Crabro tridentatus, Sm., which occurs in Victoria, has broad orange bands on the abdomen; the Tasmanian form, C. tasma^iicus, Sm., has narrow yellow bands, but does not differ appreciably in structure.
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