ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 243 



New Lancashire Lichens.* — J. A. Wheldon made an excursion to 

 Ease Gill, a valley in Lancashire with a great variety of geological strata 

 and an altitude varying from almost sea-level to 2000 feet high. He 

 found Lecanora Prevostii on perpendicular limestone rocks in good con- 

 dition, and associated with Lecidea cupularis. A photograph of the 

 locality has been published showing the character of the rocks where 

 these lichens grow. L. excentrka was also collected during the day on 

 limestone boulders. Wheldon notes the abundance of lichens that occur 

 in Silverdale, perhaps owing to its proximity to the sea. 



Hasse, H. E.— Additions to the Lichen Flora of Southern California, No. 5. 



[A list with diagnoses of three species previously known, and three new to 

 science.] Bryologist, xiv. (1911) p. 2-4. 



Jatta, A. — Flora Italica Cryptogama. Pars. III. Lichens. Fasc. iv. Enterolicheni. 

 [Cladoniacese and Lecideaceae are described.] 



Rocca : S. Casciano (1910) pp. 461-694 (5 figs.). 

 Lesdain, Bouly de — Notes Lichenologiques, Nos. xi., xii., xiii. 



[Notes on species from various localities, some of them new to science.] 



Bull. Soc. Bot. Franci, lvii. (1910) pp. 31-5, 236-40, 460-3. 



Servit, M. — Zur Flechtenflora Norddalmatiens. (The Lichen Flora of North 



Dalmatia.) r n g. Bot. Blatter, ix. (1910) pp. 164-93. 



See also Bot. Centralbl, cxvi. (1910) p. 19. 

 Smith, A. Lorrain — New Lichens. 



[A list of British species new to science, with diagnoses and notes.] 



Journ. of Bot., xlix. (1911) pp. 41-4 (1 pi.). 

 Zahlbruckner, A. — Lichens rariores exsiccati, Dec. xiii.-xiv. 

 [Fortv specimens of Lichens are issued.] 



Wien, 1910. See also Bot. Centralbl, cxiv. (1910) p. 650. 



Mycetozoa. 

 (By A. Lorrain Smith.) 



New Genus of Plasmodiophoraceae.f — Rene Maire and Adrien 

 Tison found the organism on the roots of Veronica arvensis in the 

 cortical tissues. The parasite is unlike all other allied forms in the 

 absence of any action causing hypertrophy. A uninucleate rnyxanioeba 

 is found in the host-cell near the tip of the root ; it becomes plurinucle- 

 ate, and finally breaks up into spores. It has evidently no hurtful 

 effect on the host-cell. The authors consider that they are dealing with 

 a new genus Ligniera allied to Rhizomyxa ; they found a second species 

 of the genus on the roots of Gallitriche stagnali. 



Lister, G. — Two New Species of Mycetozoa. 



[A species of Licea from Aberdeenshire, and of Hemitrichia from Japan.] 



Journ. Bot., xlix. (1911) pp. 61-2. 

 Mac bride, T. H. — A New Genus of Myxomycetes. 



[Schenella simplex g. et sp. n., probably referable to Dianemeae. Collected 

 on a pine log in the Yosemite valley ] 



Mycologia, iii. (1911) pp. 39-40 (1 pi.). 

 Rayner, J. F. — Recent Additions to the Mycetozoa of the New Forest. 



Hampshire Field Club, Reprint (1910) 1 p. 



* Lancashire Naturalist, iii. (1910) pp. 192-4 (1 pi.) 

 t Comptes Rendus, clii. (1911) pp. 206-8. 



