ALGOLOGICAL NOTES 79 



Another sheet from Pamplin's MSS., dated July 23, 1659, is 

 pecuHarly interesting in that it includes the names of '* John 

 Mapletoft, John Snagge, Mr. John Nid [see Pref. to Eay Cat.] , 

 Mr. John Wray [Ray] , Mr. Thomas Pockley Francis Willughby 

 Esq. [Ray's Patron] , Mr. Peter Com'thop of Trinity Colledg in 

 Cambridg., Francis Willugby Esq. of Middleton neere Coleshill 

 in Warwickshire, Sir Francis Willugby's son, Mr. Peter Com'thop 

 of Danny in Sussex on this side Lewes." 



This writing in not in Corbyn's hand, nor is it written by Ray. 

 The note rather suggests the roll of a club. Corbyn has, however, 

 added the date, which was already entered in the corner, so that 

 the document evidently at one time belonged to him, and it was 

 one he thought it worth while to preserve. 



ALGOLOGICAL NOTES.— V.-IX. 



By G. S. West, M.A., D.Sc, F.L.S. 



(Continued from vol. xhx. p. 89.) 



V. — A DiATOMACEOus Earth feom Rhodesia. 



A Diatomaceous Earth was forwarded to me for examination 

 from the British Museum which had been collected by Mr. 

 A. J. C. Molyneux near Choma, in North-west Rhodesia. It was 

 a dry deposit of a grey colour, and was obtained from around the 

 orifices of warm and hot siliceous springs. 



It consists of a freshwater deposit of recent origin, and one 

 Diatom, Eijithemia Argus Kiitz., was present in great quantity, 

 being the dominant constituent of the deposit. Less conspicuous, 

 but almost equally numerous, were Bhopalodia gihherula var. rupes- 

 tris (W. Sm.) Grun. and B. gihherula var. Sclnveinfurthii 0. Miill. 



The matrix in which these more conspicuous Diatoms were em- 

 bedded contained numerous specimens of the following species: — 

 Eunotia sp., Navicula (Diploneis) elliptica Kiitz., N. {Pinnularia) 

 Legumen Ehrenb., N. {Pinnularia) stauroptera Grun., N. {Pinnu- 

 laria) viridis (Nitzsch) Kiitz., Mastogloia Grevillei W. Sm., Gom- 

 phonema intricatum Kiitz., and Surirella ovalis Breb. var. ovata 

 (Kiitz.) V. Heurck. 



In addition to the above were several other fragmentary 

 Diatoms, including one species of Nitzschia. 



It is hoped subsequently to publish photographic illustrations 

 of the constituents of this deposit, and also of the Diatomaceous 

 Earth from the Outer Hebrides (see Note II.). 



VI. — Some African Alg^. 



1. Microcystis ochracea (Brand) Forti, Syll. Myxophy. 1907, 

 p. 86. Polycystis ochracea Brand, x\lgenfl. Wiirmsees, 1898, p. 200. 

 Sphincto siphon poly morphus G. S. West, •' Alg. Third Tanganyika 

 Exped.," Journ, Linn. Soc. Bot. xxxviii. 1907, p. 145, t. 3, f. 12 : 



