ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 409 



Japanese Algae.* — K. Yendo continues his notes on marine "'algas 

 new to Japan. Among the species recorded are Boodlea composita 

 Brand, Spathoglossnm cornigerum J. Ag., Gigartina wialasJcensis Rupr., 

 G. odtoiensis Rupr., SarcocladUi crater if ormis J. Ag., species of Spongo- 

 niorplta and Acrosiphomn, and many other interesting species. In many 

 cases the records are accompanied by important critical notes. Under 

 Dilophus flab ell atus Coll., he explains the apparent proliferations which 

 sometimes occur on the surface of Dictyot* and Spathogloss^e as being 

 embryonal shoots germinated from the matured spores and still growing 

 iittaclaed to the mother frond. They are therefore quite different from 

 the sporiferous proliferations characteristic of Glossophora. Under 

 Lomentaria umhellata H. & H. he describes and figures the decumbent 

 articuli bearing haptera at their ends, and producing on their upper 

 sides upright shoots to form the erect plant. As a rule the rhizome is 

 limited to the basal part of a frond, but a lower branch on an erect 

 shoot may become modified to assume a similar appearance. Chylocladia 

 umbeUata is described from such a form. G. gelidioides and Lomentaria 

 catenata are synonyms of this species. In Japanese specimens of 

 L. catenata a fusion of branches is frequently met with, the point of 

 attachment being merely a thickening of the cell-wall, the lamellar 

 structure being more or less distorted at the point of contact. No 

 special haptera or tenacula have been found there. 



K. Okamuraf describes and figures twenty-one species and varieties 

 of Japanese algte, including Codiam, Halimeda, Caulerpa, Ghordaria, 

 HomcRostroma, SpgricUa, etc. One new species, Spyridia elongata, is 

 here published. 



Fungi. 

 (By A. LoBRAiN Smith, F.L.S.) 



Pyrenomycetes.J— C. CI. Lloyd has published a synoptical account 

 ■of some genera of the large Pyrenomycetes. He passes under review 

 the species classified under GamiUea. He finds that they form a natural 

 genus or a group which may be broken up into separate genera witli 

 further knowledge. In many, the asci disappear and leave a pulverulent 

 mass of spores. Thamnomyces, another disputed genus, has a long often- 

 branching stroma to which are closely related certain Xylariee, such as 

 X. setosa and A', gracillima. The largest Pyrenomycete is Engleromyces 

 Goetzei. It was taken by one collector to be a fossilized skull. It only 

 occurs in Eastern and Tropical Africa. 



Study of Microthyriace88.§— M. G. Arnaud rejects a recent group- 

 ing of genera in this family by Theissen and Sydow, who had placed 

 some of the members in the Polydomellaceae because of their immersed 



* Bot. Mag. Tokyo, xxx. (1916) pp. 47-55 (figs. 1-4) and pp. 243-263. 

 > t Icon. Jap. Algse, iii. Nos. 9-10 ; iv. No. 1 (Tokyo, 1915-16) (pis. cxli-clv.). 

 X Cincinnati, Ohio (1917) 16 pp. (figs ). 

 § Comptes Rendus, cxliv. (1917) pp. 574-7. 



Aug. loth, 1917 2 E 



