1896.] ON TfiB HXMBNOWBftA Of OBTtON. 401 



already at work on this important undertaking o£ the Deutsche 

 Zoologische Gesellschaft, under the general editorship of Prof. 

 F. E. Schulze, of Berlin. The first part of the work was promised 

 to he ready in the beginning of 1897, and twenty-five years were 

 allowed for its full completion. The general character of the 

 work was shown by the pattern treatise on the Heliozoa prepared 

 by Dr. Fritz Schaudinn, which accompanied the prospectus. In 

 this treatise of 24 pages about 60 species were described, so that 

 if this ratio of species to pages was an average one it would seem 

 that upwards of 190 volumes would be required to complete the 

 work. 



In reference to the discussion on Zoological Nomenclature, 

 which took place at the last Meeting, Mr. Sclater remarked that 

 he had omitted to state that at the late International Congress of 

 Zoology held at Leyden (see Bull, trois. Congr. Int. de Zoologie, 

 no. 5, p. 6) a committee of five Naturalists of diSerent countries 

 had been appointed with the object of endeavouring to settle the 

 differences between the several codes of Zoological Nomenclature. 

 The names suggested on that occasion by Prof. F. B. Schulze, 

 and accepted by the Meeting, were Prof. Blanchard of Paris, 

 Prof. Victor Carus of Leipzig, Dr. Jentink of Leyden, Mr. Sclater, 

 and Dr. W. Stiles of Washington. This subject would therefore 

 come very appropriately before the next International Zoological 

 Congress, which was proposed to be held in this country in 1898. 



The following papers were read: — 



1. A Contribution to the Knowledge of the Hymenopterous 



Fauna of Ceylon. By Lt.-Col. C. T. Bingham, F.Z.S., 



F.B.S. 



[Received February 17, 1896.] 



(Plate XV.) 



I know of only two published lists dealing with the Hymenoptera 

 of Ceylon. The first, by Walker, is given in chapter xii. of 

 Tennent's 'Natural History of Ceylon,' and includes Walker's 

 new species described in the ' Annals and Magazine of Natural 

 History,' series 3, vols. iv. (1859) and v. (1860). The second list, 

 by Motschoulsky, appeared in the ' Bulletin de la Societe Impdriale 

 des Natiiralistes,' Moscow, 1863. In this Walker's list was re- 

 published, and several new species, chiefiy Chalcididce and Ichneu- 

 monidce, were described. 



The present paper, founded on the collections made in Ceylon 

 by Col. Terbury, E.A., and Mr. E. E. &reen, deals only with the 

 Aculeate, or more correctly, seeing that I have included the 

 TubuLifera(C7Ar!/sieZicfe), the Monotroohous Hymenoptera found in 



Pboc. Zool. Soc— 1896, No. XXVI. 26 



