( vii ) 



CONTENTS 



I'AtiE 



Explanation of the Plates . . . . . . . . . . . . viii 



List of Fellows . . . . . . . . . . . . . . . . ix 



Additions to tliu Library . . . . . . . . . . . . xxiii 



M E M O I K S . 



L New species of Heteroceia from the Khasia Hills. Part IL 



By Colonel Chaiiles Swinhoe, M.A., F.L.S., F.Z.S., &c. . . 1 

 n. Additional notes and observations on the life-history of 



Atypus piceiis. By Fkederick Enock, F.E.S. .. .. 21 



IIL Notes on Lycccna (recte Thecla) rliyvmiis, tenyntncinii, and 



pretiosa. By George T. Bethune-Bakek, F.L.S. . . . . 27 



IV. The effects of aititicial temperature on the colouring of several 

 species of Lepidoptera, with an accoimt of some experi- 

 ments on the effects of light. By Fkedekic Meekifielu, 



F.E.S 33 



V. On variation in the colour of cocoons of Erioyaster lancstri-'^ 

 and Satuniia carpiiii. By William Bateson, M.A., Fellow 

 of St. John's College, Cambridge. Communicated by Dr. D. 

 Shaiip, M.A., F.R.S 45 



VL On the classification of the Geoiiictfiiia of the European 



fauna. By Edward Meyrick, B A., F.Z.S. . . . . . . 53 



VIL On a little-known species of Papllio from the Island of Lifu, 



Loyalty Group. By the Hon. Walter Rothschild, F.Z.S. Ill 

 VIII. Additions to the Longicornia of ^Mexico and Central America, 

 with remarks on some of the previously-recorded species. 

 By the late Henry Walter Bates, F.K.S., F.L.S. , &c. 

 With an Introduction by Frederick DuCane Godman, 

 F.E.S 143 



IX. New species of Epheineridce from the Tenasserim Valley. 



By the Rev. Alfred E. Eaton, M.A., F.E.S. . . . . 185 



X. On some eggs of Hemiptera By Dr. David Sharp, M.A., 



F.R.S 191 



XL On a new and also on a little-known species of Pseudacnca 

 in the collection of the Hon. Walter Rothschild. By 

 Arthur G. Butler, F.L.S., and the Hon. Walter Roths- 

 child, F.Z.S 201 



XII. On variation in the colour of cocoons, pupse, and larva ; 



further experiments. By William Bateson, M.A., Fellow 

 of St. John's College, Cambridge. Communicated by Dr. 

 D. Sharp, M. A., F.R.S 205 



XIII. Experiments in 1890 and 1891 on the colour-relation between 



certain Lepidopterous larvit and their surroundings, together 

 with some other observations on Lepidopterous larvic. By 

 Lilian J. Gould. Communicated by Ed\v.\rd B. Poulton, 

 M.A., F.R.S 215 



