282 SUMMARY OF CURRENT RESEARCHES RELATING TO 



connexion with the two paramyloo granules. At the time when loDgi- 

 (inlinal division was nearly complete, the protoplasm containing the 

 granule of the individual on the left would rapidly how posteriorly, so 

 that the granule was actually in the posterior end of the individual on 

 i li<' right. This process took 20 seconds. Then the reverse flow occum d 

 and the protoplasm containing the granule of the individual on the 

 right would flow to the left. Observers could hardly refrain from fear 

 that one individual would secure all the paramylon. The question as to 

 the possible free-formation of paramylon as an assimilation product of 

 the protoplasm has long been discussed, and is still undecided. The 

 mode of formation of the anterior paramylon granule in E. oxyuris is 

 extremely suggestive, however, that the result is due to the activities of 

 the protoplasm quite independently of the numerous small chloroleucites 

 present. 



Algological Notes.*— E. Lemmermann publishes a critical study of 

 the genus Gharaciopsis Borzi. He is of opinion that a number of species 

 included in Gharacium should be transferred to Gharaciopsis^ and thai 

 the genus therefore contains eighteen species and seven varieties. He 

 gives references to literature and collections. Fourteen species are 

 figured. 



In another study he treats of alga3 found in the filaments of Utri- 

 cularia. Two specimens of Diaplomus gracilis van Douwe were found 

 in two filaments of a Brazilian species of Utricularia by Dr. van Douwe. 

 Other species in the same plant included two Flagellates, one Heterokont, 

 three Protococcaceas, and twenty-seven Conjugated, of which the author 

 gives a list. How the algas arrive in that poshion is still a matter of 

 theory. Some of the species are figured. 



New European Nitella.f— J. Groves publishes a description and 

 figures of Nitella Dixonii H. and J. Groves, a new species found in the 

 waters of Monchique in Algarve, Portugal, by H. N. Dixon in May, 

 1911. He adds critical notes on the structure of allied species of the 

 group Polyarthrodaciylse, a group belonging mostlv to the southern 

 hemisphere. The finding of a new member of this group in Europe is 

 of great interest. 



New Fossil Alga.}— H. Gliick describes a new fossil species. Micro- 

 codium elegans, from the marine tertiary strata of South Germany. He 

 discusses the various living species of Godium, and then describes the 

 fossils collected in South Baden and the neighbourhood of Sigmaringen. 

 The algas are 0-2-2 mm. long; the small specimens are granular, & the 

 larger ones elongated, lumpy. Some of them show a symmetrically 

 rayed arrangement of the external club-shaped, long cells ; the smaller 

 central part shows only regularly polygonal cells, on the whole like living 

 species of Godium. The elongated palisade-cells have dark cell-contents. 



* Abh. Naturw. Ver. Bremen, xxiii. (1914) pp. 249-67. See also Bot. Centralbl 

 exxviii. (1915) p. 6. 



t Journ. Bot., liii. (1915) pp. 41-3 (1 pi.). 



J Mitt. Bad. Geol. Landesanstalt, vii. (1912) pp. 1-24 (4 pis.). See also Bot 

 Centralbl., exxvi. (1914) pp. 553-4. 



