ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 335 



were no pelagic forms, though Globigerina bulloides is known to be 

 abundant in the plankton between Trondjem and Iceland. Nor were 

 there any Radiolarians, though a few species, e.g. Acanthoma echitioides 

 Haeckel, is known to appear sometimes in immense numbers in plankton 

 off the west coast of Norway. The author's tables take account of 166 

 species, and he has special notes on Grithionina abyssorum sp. n., Bilo- 

 culina leevis Defrance, Bigenerina sarsi sp. n. (which is dimorphic like 

 the former species), and Lagena lucida Will. In his survey of the 

 occurrence of Thalamophora in all the ocean-depths investigated by 

 the expedition, the author distinguishes three different centres of dis- 

 tribution, viz. : — A. The southern grey clay, which includes the fjords 

 and banks along the Norwegian coast, about as far as to 19 E. long., 

 and the grey clay near Iceland and Jan Mayen Island ; B. The 

 northern grey clay, to which the fjords and banks along the Norwegian 

 coast east of 19 E. long., near Bear Island aud Spitzbergen, belong, and 

 the Bhabdammina Clay ; C. The brown clay, which is divided into the 

 Biloculina Clay proper and the Transition Clay. 



Recent Foraminifera.* — Dr. J. M. Flint records in a descriptive 

 catalogue the results of an examination of a portion of the bottom 

 material obtained during the dredging operations of the U.S. Fish 

 Commission steamer ' Albatross.' It furnishes, with its 80 plates of 

 photographs, a valuable book of reference for students of the Foramini- 

 fera. Brady's classification is followed. 



Parasitic Infusorians.-f— Dr. Bruno Galli-Valerio describes Tricho- 

 monas cavise Dav., which he found to be the cause of an epidemic 

 among guinea-pigs. He has also a note on sub-serous intestinal nodules 

 in Totanus chalidris, which seemed to be due to a ciliated Infusorian 

 recalling Balantidium colt. 



-a 



Botryomonas, a New Genus of Flagellata.J — In plankton-material 

 from Lake Nyassa, Africa, Herr W. Schmidle finds an organism which 

 he makes the type of a new genus of Flagellata, under the name Botryo- 

 monas nutans g. et sp. n., with the following diagnosis : — Familiae fuscee, 

 initio adnatee, deinum natantes, e filis crassis brevibus tubulosis radian- 

 tibus et postremo corymboso-dichotomis et monadina in excipulis 

 sedentia gerentibus ; monadina parva, ovoidea aut elliptica, amyligera, 

 uninucleata, apice (ut videtur) biciliata ; excipula crateriformia, termi- 

 nalia, ad basin angustata, et in apice aperta. 



The Tentaculiferous Infusoria.§ — M. Rene Sand publishes the first 

 or general part of a memoir on these Protozoa. The present instalment 

 includes a general account of the anatomy and physiology, of the process 

 of conjugation and of the development, and a discussion of the affinities. 

 It is to be followed by a systematic part, and includes both an account 

 of the author's own observations, and a summary of the observations of 

 others since the publication of Biitschli's Protozoa. The author's own 

 observations have been made on 44 different species, obtained both from 



* Ann. Rep. Smithsonian Inst, for 1897; Rep. U.S. Nat. Mus., part i Washing- 

 ton, 1899, pp. 251-349 (80 pis.). 



t Centralbl. Bakt. u. Par., xxvii. (1900) pp. 305-9 (3 figs.). 



t Enters Bot. Jahrb., xxvii. (1899) p. 229 (1 fig.). See Beih. z. Bot. Centralbl 

 ix. (1900) p. 120. § Ann. Soc. Beige Micr., xxiv. (1899) pp. 57-1S9 (S pis.). 



