1895.] L. de Niceville & Dr. L. Martin— Btdterfiies of Sumatra. 363 



II. Henley Grose Smith. Appendix v of " The Head-Hunters 

 of Borneo" by Carl Bock. English edition, 1881. "List of Sumatra 

 Butterflies." Enumerates 226 species. 



III. P. 0. T. Snellen, Tijd. voor Ent., vol. xxxiii, p. 215 (1890), 

 " Lijst van Lepidoptera op Sumatra." Enumerates 48 species. 



IV. Dr. B. Hagen. " Die Pflanzen- und Thierwelt von Deli auf 

 der Ostkiiste Sumatra's." Separat-Abdruck aus " Tijdschrift van 

 het Koninklijk Nederlandsck Aardrijkskundig Genootschap." Jaar- 

 gang 1890. Leiden. — E. J. Brill. Enumerates 323 species. 



V. P. C. T. Snellen. "Midden-Sumatra." Lepidoptera (1892). 

 Enumerates 101 species. 



VI. Dr. B. Hagen. Iris, vol. vii, p. 1 (1894). " Verzeichniss der 

 von mir auf Sumatra gafangenen Rhopaloceren." Enumerates 109 species 

 in the subfamilies Papilionincs, Pierince and Danaince only. 



VII. Hofrath Dr. L. Martin. " Einige neue Tagschmetterlinge 

 von Nordost-Sumatra." Munich, 1895. Pts. I and II. Enumerates 9 

 species. 



Besides these papers exclusively on Sumatra butterflies search lias 

 been made for all references to the butterflies of the island in Mr. W. 

 F. Kirby's " A Synonymic Catalogue of Diurnal Lepidoptera " up to 

 1877, and " The Record of the Zoological Literature " up to 1893, the 

 date of the last volume published ; Dr. A. R. Wallace's papers on 

 Eastern Butterflies ; Mr. A. G. Butler's paper on the Butterflies of 

 Malacca ; Dr. O. Staudinger's " Exotische Schmetterlinge," and the 

 Butterflies of Palawan ; Herr Georg Semper's " Schmetterlinge der 

 Philippinischen Inseln ; " and Mr. W. L. Distant's " Rhopalocera 

 Malajana." It is hoped that the list is fairly complete as far as 

 present knowledge goes. The remarks on each species are headed by 

 the names of the different writers who have recorded the species from 

 Sumatra. All those species that have not been obtained by ourselves 

 have an asterisk (*) prefixed to the name. Dr. Martin is of opinion 

 that this list cannot be greatly extended, and that it is nearly complete. 

 I do not agree with him ; up to the last month of his stay in the island, 

 species new to the list continued to be obtained ; besides which, con- 

 sidering the vast extent of the island, that it is largely covered with 

 almos-t impenetrable virgin forest, that a considerable portion of the 

 country has never been explored, that it contains a continuous chain of 

 high volcanic mountains running throughout its entire length which is 

 almost unknown, and has been crossed from north to south in but few 

 places, and finally that Dr. Martin's collectors visited a few favoured 

 spots only, at most 50 miles apart, I think it almost certain that this list 

 will some day be increased by an additional 100 species at least. At the 

 J. ii. 46 



