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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 

 end of Pompilidse. By Edward Saunders, 

 F.L.S., V.P.E.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 captured 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 has 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.) 



