( 515 ) XVI. Hymenoptera aculeata, collected in Algeria by the Rev. Alfred Edwin Eaton, M.A., F.E.S., and the Rev. Francis David Morice, M.A., F.E.S. Part I. Heterogyna and Fossores to the e7id of Pompiliclaj. By Edward Saunders, F.L.S., V.RE.S. [Read October 16th, 1901.] The subject-matter of this paper consists of two collec-tions, one made by Mr. Eaton at various periods during the years 1892 — 1897, and the other by Mr. Morice in the spring and early summer of 1898. Both are rich in species, and contain a large number of undescribed forms. Mr. Eaton, although not a specialist in Hymenoptera, has been good enough to collect that order most assiduously on my behalf, and I am very glad to be able to record here my appreciation of his kindness. Mr. Morice is a well-known specialist in this order, and his collection, for the short time he was in Algeria, is a very extensive one, and contains a number of species not included in Mr. Eaton's, but having never studied botany, he has been unable to furnish such data as those given by Mr. Eaton. Mr. Morice has very kindly consented to help me in the preparation of this paper, and the present part will, I hope, shortly be followed by one on the Sphegidse, which will be from his pen. Until the whole collections are thoroughly worked through, it is impossible to supply accurate data as to the attractive powers of the various plants, the distribution of the species captureil in respect of altitude, season, etc., but I hope to deaL with these in a tabular or other compact form at the close of the paper. With the specimens of Aculeate Hymenoptera collected by him in Algeria and at Tunis, Mr. Eaton furnished notes corresponding with indications on their pin-labels relating to circumstances of their capture, such as place, date, flowers frequented by the species, and in some instances peculiarities of habits, and the colours of the eyes, etc., in life. Limitations in respect of excursions and places of sojourn were imposed upon him by the state of his health ; and he lias kindly summarized, under the head of each of the principal halting-places, sites of which mention is made TRANS, ENT. SOC. LOND. 1901. — PART IV. (DEC.)
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