464 SUMMARY OF CURRENT RESEARCHES RELATING TO 



New Japanese Corymorpha.* — Iwaji Ikeda describes Corymorpha 

 tomoensis sp. n. It is nearly related to G. nutans, but differs in the 

 coloration of the hydrosome, the number of proximal tentacles, the 

 number and arrangement of gonosomes, the shape of the medusa- 

 umbrella, and the mode of anastomosis of the longitudinal canals in the 

 hydrocaulus. 



Revision of British Museum Hydroids.f — Armand Billard has made 

 a revision of a part of the collection of Hydroids in the British Museum, 

 discussing questions of synonymy, and supplying figures of some in- 

 sufficiently defined species. 



Protozoa. 



Structure and Life-history of FusulinidsB.f — H. v. Staff has made 

 a thorough study of these extinct Foraminifera, whose climax he asso- 

 ciates with an abundance of carbonate of lime in tropical littoral waters 

 (in Upper Carboniferous, Middle Cretaceous, and Eocene). There is 

 distinct proof of dimorphism in Fusulina. The significance of fused 

 shells is discussed. The bulk of the memoir is devoted to a careful 

 account of the shell-structure and to an analysis of the factors operative 

 in shell-making. 



Notes on Choanoflagellata.§ — J. S. Dunkerly has some notes on 

 these rather unfamiliar Protozoa. The mode of ingestion is still disputed. 

 No one has corroborated Saville Kent's observation of a circulation in 

 the hyaline protoplasm of the collar, which caused food particles to pass 

 up the outside and down the inside of the collar. Up to the present 

 conjugation has not been obseived in this group of Infusoria. The 

 author refers to some forms which he found at Plymouth, e.g. Polyceca 

 dumosa and Salpingceca napiformis. 



Influence of Ultra-violet Rays on Trypanosomes.|| — H. Bordier 

 and It. Horand have observed the rapid destructive action of ultra-violet 

 rays on Trypanosoma Uwisi. The Trypanosomes become rapidly very 

 granular and shrivelled up. They are transparent and of the same 

 index as the medium, so that it is impossible to find their remains under 

 the ultra-microscope. 



Trypanosomiasis in Man in Sumatra.^ — C. Elders gives a short 

 account of a Trypanosome which he found in Javanese suffering from 

 fever. It seems to be different from Trypanosoma gambiense and other 

 forms. 



Study of Nagana Trypanosome.** — Murio Battaglia gives an account 

 of his studies on this important Trypanosome — its structure, pathogenic 

 properties, and life-cycle. 



* Annot. Zool. Japon, vii. (1910) pp. 153-64 (1 pi.). 

 t Ann. Sci. Nat. (Zool.) xi. (1910) pp. 1-64 (24 figs.). 

 \ Zoologica, xxii. (1910) heft 58, pp. 1-93 (2 pis. and 62 figs.). 

 § Journ. QuekettMicr. Club, 1910, pp. 19-24 (1 pi.). 

 || Comptes Kendus, cl. (1910) pp. 886-7. 

 If Ccntralbl. Bakt. Parasitenk., liii. (1909) pp. 42-3 (1 pi.). 

 ** Tom. cit., pp. 113-69 (14 figs.). 



