34 



W. B. TURNER : NOTES ON FRESHWATER ALGiE. 



* Odontidium hyemale Kiitz. Tabellaria jiocculosa Kiitz. 



* O. meiodon Kiitz., extending to 6,000 ft. T. fenestrata Kiitz. 



alt. Referred by me in 1879 to * Pinnularia lata W. Sm., a sub-alpine 



0. turgidtduni Kiitz., a doubtful species. 



species. 



DE SMIDIEJE . 



Penium Brebissonii Mengh. Cosmariiun ornatum Rfs. 



*P. curium, Breb. C. Meneghinii Breb. 



* Cylindrocystis crassa De By. Eitastrum binale (Turp.) Rfs. 



C. diplospora Lund. Staurastrwn alternans Breb. 



Tetmemoms Brebissonii (Men.) Rfs. S. paradoxum Meyen. 



* T. lavis Kiitz. * Mesotcenium De Greyii nov. sp. 



Some of the above are from the valley, but on the moor, as its 

 altitude is 1000 feet, it is not surprising to meet with sub-alpine speci- 

 mens. A few of those noted are new county records, and are marked 

 with an asterisk (*); the last-named I believe to be entirely new, and 

 it affords me much pleasure to associate the name of Lord Walsingham 

 therewith, as our good ex-president not only put the Frankland motto 

 into practice on the occasion of our visit, but exceeded it by adding 

 a ' libera mensa ' thereto. The new species will stand thus : — 



Mesotaenium De Greyii nov. sp. Frond cylindrical, smooth, 

 elongate ; no apparent constriction ; not tapering at all towards the 

 ends, which are more or less broadly rounded. The largest species 

 in the genus. 



Long. 76 - 104 {x = -00299 - '004 m.; Lat. 20— 23 /x = -00078 — 9 in. 

 Frond straight, rarely curved. The endochrome in the specimens 

 did not exhibit any well-defined chlorophyll-plate, as a transition state 

 was evident, the interior mass being granular, and mixed with large 

 oil-globules. Nearest in all probability to M. Endlicherianwn of 

 Nageli. It may perhaps be deemed a Penium, but, after some con- 

 sideration, I have referred it rather to Mesotcenium. 



I have to report several things from Strensall Common, the most 

 important being a new species, 



Onychonema Nordstedtiana nobis, figured in the December 

 number of the Trans. Roy. Mic. Soc; and 



Cosmarium Regnesi Reinsch., very local indeed ; though my 

 friend, Mr. J. Roy, informs me that it is common enough on 

 Deeside, N.B. 



NOTES OK" NEW SPECIES, &c 



The following may be of interest: — 



Micrasterias platyptera nov. sp. A large species ; segments 

 five-lobed ; side lobes rather unsymmetrically divided into lobules, 

 which bear slightly recurved spines (like M. brachyptera Lund.) ; 



Naturalist, 



