240 Scientific Intelligence. 



without its own special fungi which are injurious to fruit trees, 

 for Prof. McAlpine describes more than fifty new species of 

 fungi of different orders which attack fruit trees, and their 

 microscopic characters are well illustrated. The study of plant- 

 diseases in Australia evidently offers a wide field for the mycolo- 

 gist and the pathologist. A chapter is devoted to the treatment 

 of fungus diseases and, if the diseases are numerous, it is also 

 true that, at the present day, much is known definitely in regard 

 to their prevention. Prof. McAlpine's treatise is a valuable con- 

 tribution to our knowledge of the comparative distribution of 

 injurious fungi. w. g. f. 



7. Das Plankton des JSforweg ischen Nordmeeres ; by H. H. 

 Gran, Rept. Norwegian Fishery and Marine Investigations. II, 

 No. 5, 222 pp., 1 pi., large 8°. Bergen, 1902.— This treatise by 

 the well-known algologist, Dr. N. H. Gran, includes both animal 

 and plant-forms of plankton organisms and is divided into two 

 parts, a general and a special. The introduction gives a history 

 of the study of plankton-organisms up to date and is followed 

 by a chapter on the biology and distribution of selected species, 

 of which the accounts of Halosphcera viridis, Phwocystis 

 Pouchettii and of a number of pelagic Diatoms and especially 

 of the Peridinese, are of great interest to botanists. The second 

 part of the volume, after an account of the different stations 

 where collections were made, concludes with a systematic list of 

 the species of both plants and animals included in the work, with 

 notes on their distribution. Among them are several new spe- 

 cies belonging to the genera Peridinium and Ceratium. w. g. f. 



8. The Fauna and Geography of the Maldive and Laccadive 

 Archipelagoes. Edited by J. Stanley Gardiner. Vol. I, Part 

 III, pp. 223-346, 33 figs., 4 pis. — The material collected by Mr. 

 Gardiner in 1899 and 1900 is gradually being described (this 

 Journal, xiii, 321 ; xiv, 74). Fifty known species of the Actino- 

 gonidiate Echinoderms are listed by Professor F. Jeffreys Bell. 

 Many of them, as the Ophiomthiops unicolor Brock (1888), were 

 hitherto known only by a single specimen. Professor Bell again 

 urges the investigation of the question of the reproduction of 

 the disc in certain ophiuroids. " It is clear that, if the gonads 

 of an ophiuroid be set free by the separation of the disc, and if a 

 new disc be formed and new gonads developed, the question of 

 germplasm may be considered settled." In the short list of 

 Orthoptera by Malcolm Burr, one species {Liphoplus sp.) is men- 

 tioned as possibly new. The third contribution, by L. A. Borra- 

 daile, on the Marine Crustaceans of the expedition, is an extended 

 report on the Xanthidse. Of the 89 species cited, 17 are 

 described as new ; for one, a new subgenus (Platyozhcs) is pro- 

 posed, closely related to Pseudozius Dana. Two new genera, 

 Cwcopilumnus, type C. hirsutus n. sp., and Maldivia, type M. 

 symbiotica n. sp., are described, whose systematic relationship 

 remains undetermined. Four known species belonging to the 

 Atelecyclidse and Hapalocarcinidse are also given. Tate Regan 



