ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 335 



become transformed into the normal thallus. Details of the germination 

 of other species are discussed, and the work of Oltmanns and Derick is 

 commented upon. 



Marine Algse from the Chatham Islands.* — A. D. Cotton publishes 

 a list of 42 species from these islands, collected by H. E. Maltby. 

 One of these is new, RhodophijUifi chathamensis, most nearly allied to 

 R. Brookeana, but differing from it in the structure of the frond. The 

 algal flora of the islands bears a strong resemblance to that of New 

 Zealand. 



AlgaB of the Chatham Islands.f — E. Lemmermann writes a full 

 account of the algal flora of tlie Chatham Islands, in which he includes 

 all the species, both fresh-water and marine, which liave been recorded 

 from there up to the present time. The first collection was made 

 by H. H. Travers and worked out by von Mueller and J. G. 

 Agardh. It included 75 species. Nothing further happened till the 

 voyage of Schauinsland, whose collection has greatly enriched our 

 knowledge of the algas of the islands. The marine species were worked 

 out by Reinbold and the fresh-water species by Lemmermann, 

 who now writes a general survey of the entire algal flora. The total 

 number of species now recorded from the Chatham Island group is 177, 

 of which 102 are new records, including 8 new to science. In tabulated 

 form is shown the number of species belonging to each group, followed 

 by lists of the species found in Lake Huro and the Lagoon, with notes 

 on their frequency, etc. The greater number of algag collected are 

 marine and belong especially to Floride^e. Of the whole marine flora, 

 32 are cosmopolitan and 15 are endemic species, while many of the 

 remainder are as yet only recorded from New Zealand and the Chatham 

 Islands : these are enumerated in separate lists. The main character- 

 istics of the Chatham Islands algal flora are : the occurrence of the large 

 Phfeophyceae (Durvillcea, Marginaria, Macrocystis), the preponderance 

 of Floridefe (74 species), the poor development of Chlorophyces, and 

 the occurrence of the 15 endemic species. A list is then given of all 

 the species, fresh-water and marine, with the locality and geographical 

 distribution of each ; together with a few critical notes and keys. 



Algae of Central Europe.:}: — W. Migula continues his work on the 

 algffi of Germany, Austria, and Switzerland, which forms the crypto- 

 gamic part of Thome's " Flora von Deutschland." About half of the 

 cryptogamic portion is now completed. The algse have been carried 

 on in the present five parts from the middle of the Desmideas to 

 the family of the Scenedesmace^e. There are, as usual, keys to the 

 genera and species, and descriptions are given of each species. 



New British Callymenia.§ — E. M. Holmes describes a new species 

 of CalJymenia, C. Larterice, collected at Combe Martin, in North Devon, 

 by Miss Lartei'. The colour of the frond is duller than that of the 

 typical form of C. reniformis or of its var. undulata. In no specimen 



* Kew BuU., 1907, pp. 37-43. 



t Bugler's Bot. Jahrb., xxxviii. (1907) pp. 343-382 (2 pis.). 

 X Gera : Zezschwitz, 1907, lief. 35-39, pp. 513-672 (25 pis.) 

 § Jouru. of Bot., xlv. (1907) pp. 85-6. 



