On Ceylon Algce in the British Museum. 21 



III. — Catalogue of Ceylon Algce in the Herbarium of the 

 British Museum. Bj George Mureay, F.L.S., Assistant, 

 British Museum, and Examiner in Botany, Glasgow Uni- 

 versity. 



When the Trustees of the British Museum acquired the 

 collection of Alg£e formed by the late Prof. Dickie of Aber- 

 deen, it was found that it contained a partly-named series 

 collected by Mr. Ferguson in Ceylon. I have revised and 

 completed the naming of this series so far as I judged it pos- 

 sible from the material. There are a fair number of specimens 

 (as in all collections of Algaj) to which it is not possible to 

 give more than a generic name. I have withheld these, and 

 among them a species of Callophyllis and one of Bryopsisj 

 which Prof. Dickie believed to be new. On most of these fur- 

 ther material may, it is to be hoped, throw light. One species 

 of Spirogyraj one Zygnema, one Sirogonium, one Cladophora^ 

 one Prasiola^ and one Lyngbya have also received MS. names 

 from Prof. Dickie. Mr. A. W. Bennett has kindly promised 

 to deal with these in a paper on new freshwater Algas in tlie 

 British Museum Herbarium. 



Prof. Harvey's list of Duplicate Ceylon AlgEe extends to 

 105 numbers, not 106 as numbered. Nos. 48 and 87 are 

 wanting, and no. 30 occurs twice. I have quoted all those 

 named by him in full, or that I have found named since by 

 Agardh, though a few of them are not in the British Museum. 

 I have omitted the one Diatom Biddulphia pulchella, Grev., 

 in the list. It was not distributed by Harvey, and we have 

 no specimen of it from Ceylon. Harvey's list as quoted 

 numbers 87. Ten are quoted as collected by Kjellman only. 

 Mr. Ferguson, in addition to those collected by Harvey and 

 by himself, has added 126 to the list, which in all numbers 

 223. 



I make this Catalogue public now with the hope that by 

 this means its extension may be more rapidly effected. Other 

 collectors have been at work and, so far as the result of their 

 labours supplements this list, it is to be hoped it will be 

 made known. 



An examination of the Algal Herbarium at Kew may be 

 expected to yield additions, and the total would be consider- 

 ably augmented by the citatioji of the Diatoms in the ' Cata- 

 logue des Diatomees de Tile Ceylan,' by Dr. G. Leuduger- 

 Fortmorel. The British Museum Herbarium contains cer- 

 tain unpublished series of Algse, which 1 have quoted in 

 giving the distribution, e. g. " Bombay, Hobsou ! " and 



