Stodder.] 



78 



[November 7, 



only very recently by the late Dr. R. K. Greville. One form 

 which I found abundantly a year ago, and have since been trying to 

 ascertain if it had been described, proves to be Coscinodiscus Lewisia- 

 nus of GrevIUe — published in the last number of the Journal of the 

 Microscopical Society, since Dr. Greville's decease. 



Here let me pay a tribute to the memory of one of the most ac- 

 complished Diatomists of our day. Having attained a high reputa- 

 tion as a botanist, for some years he appears to have given his whole 

 attention to the diatoms. After drawing most of Prof. Gregory's spe- 

 cies, since Prof. Gregory's death, he has published more species than 

 any other writer on the subject. The clearness of his descriptions, 

 and the beauty and fidelity of his drawings, have been universally ad- 

 mired. There may often be a question as to the validity of his species, 

 as there Is In many other cases, but of the value of his contributions 

 to the science, there can be no doubt. His loss will be lamented 

 by every lover of these beautiful " gems of the ocean." 



ANGULIFERE^. 



Euodia gibba Bail. 



" " var. 



Triceratium condecorum. 



" artlcum Bri. = T 



Wllksil Bail. 

 Triceratium Favus. (=? T. punctu- 



latum.) 

 Triceratium intricatum West. 



" cinnamoneum Grev. 



Amphitetras ornata. 



EUPODISCE^. 



Aulacodlscus crux, with three feet. 



" forraosus. 



Aullscus caslatus Bail. 



" macraianus Grev. 



" moronensis Grev. 



BIDDULPHIE^. 



BIddulphIa pulchella. 

 " aurita. 



" Toumeyll Ball. 



LICMOPIIORE.E. 



Climascosphenia monlllgera. 



STRIATELLE^. 



Grammatophora serpentina. 

 " macilenta. 



FRAGILARIE^. 



Plaglogramma GrevIllII Rolfs. 

 " valldum Sliadt, 



SURIUELLE^. 



Tryblionclla augustata W. S. 

 Surirella fastuosa. 

 Campylodlscus bicostatus. 



COSCINODISCEvE. 



Actlnocyclus Ehrenbergii. 

 Actlnoptychus superbus Bail.,, ined. 

 Actlnoptychus senarius. 

 Coscinodiscus asteromphalus. 



" lineatus. 



" subtills. 



" radiatus. 



" Apollinis. 



" concavus. 



" Macrfeanus ? Grev. 



" LewisianusGrey. 



Arachnoldlscus ornata. 



