278 SUMMARY OF CURRENT RESEARCHES RELATING TO 



tion of Homalia lentula Wilson, a species which has a distribution 

 extending from Jamaica to the Andes, and has been referred to four 

 different genera. The structure of the fruit is described. 



Mosses of Japan and Corea.* — J. Cardot publishes the third and 

 fourth instalments of diagnoses of many new species of mosses collected 

 in Japan and Corea, mostly by the Abbe Faurie. 



European Hepatics.f — K. Miiller continues his account of the 

 hepatics in Rabenhorst's Kryptogamen-flora, giving descriptions of the 

 following genera with their species and varieties ; — Adelanthus (end), 

 Odontoschisma (4), Calypogeia (6), Pleuroschisma (4) ; with keys, figures 

 of structure, critical notes, etc. 



Thallophyta. 

 Algae. 



(By Mrs. E. S. Gepp.) 



Eyespot of Algae and Flagellates.} — W. Rothert writes on the 

 eyespots or red stigmata, which occur in almost all swarming conditions 

 of Algae and green Flagellates. He comes to the conclusion that it is a 

 special form of chloroplast. He discusses the large stigma in Euglenacere, 

 the usually small ones in Volvocineae and in the zoospores of algae and 

 those in the gametes of Chlorogoniwn, and theirbehavour during cell- 

 division. A peculiarity of stigmata as compared with other chromoplasts 

 is that they are often of quite different form and size from the other 

 plastids in a cell, which are green. As a rule a cell contains only one 

 sort of plastid. But the author does not consider this as an argument 

 against the chromoplast nature of stigmata. Of their origin very little is 

 known. 



Erythropsis agilis.§ — Faure-Frerniet writes on this organism, of 

 which he has had the good fortune to collect a score of specimens in the 

 Bay of Croisic. Originally it was considered a Protozoon, until Delage 

 and Herouard pronounced it one of the Peridinieae allied to Pouchetia. 

 Faure-Fremiet describes its general form, recalling that of P. cornuta, 

 the cytoplasm, the ^nucleus, the stigma, the retractile appendix, which 

 resembles that of a tentacle of a sucking Inf usiorian. 



o 



Diplopsalis and the Neighbouring Genera. || —J. Pavillard writes 

 on the genus Diplopsalis and its allies, which have occasioned much dis- 



* Bull. Soc. Bot. Geneve, iii. (1911) pp. 275-94 ; iv. (1913) pp. 378-87. 



t Leipzig : Kummer (1913) Band vi. (Die Lebermoose) Lief. 18, pp. 209-72 

 (figs. 61-80). % Ber. Deutsch. Bot. Gesell., xxxii. (1914) pp. 91-6. 



§ Comptes Rendus, clvii. (1913) pp. 1019-22. 



|j Le Genre Diplopsalis. Montpellier : (1913) 12 pp. (2 text-figs.). See also 

 Bot. Centralbl., cxxxv. (1914) p. 323. 



