564 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Culture of Bovine Piroplasma.* — M. Miyajima has made cultures 

 with a bovine piroplasma which is common in Japan, and finds that a 

 variety can readily be cultivated outside the living body. The parasites 

 undergo developmental changes in blood-bouillon, and finally take the 

 form of a typical trypanosoma. This trypanosoma cannot be detected in 

 the blood of infected animals. 



Schizogregarines of Sipunculids.j — L. Brasil and H. B. Fantham 

 give some notes upon two species of Schizogregarines which occur at 

 EoscofF and Luc-sur-mer in Phascolosoma vulgare Blainv. and in P. elon- 

 gatum Kef. They belong to the family Selenidiid^e. They live free in 

 the digestive tube or fixed in its epithelium. They are vermiform, and 

 mobile like the Sehmdium of Polychtetes. The two extremities are 

 acuminate, and the surface is marked by longitudinal strife. The number 

 and disposition of these strije are distinct in the two species. The gut 

 forms are all gametocytes. Schizouts are lodged in the deeper layers of 

 the intestinal epithelium. Here they form oval cysts projecting slightly 

 into the coelome. Each contains from 30-40 merozoites, often fairly 

 regularly arranged. The gametocytes themselves are often parasitised 

 by the sporozoa which are common in the Selenidium of Polychsets. 



Myxosporidian from Kidney of Proteus. J — H. Joseph describes from 

 the kidney tubules of Proteus a new Myxosporidian, Chloromyxum 

 protei. The youngest stages, which have two or more nuclei, occur 

 mostly in the ciHated cells. The host-cells hypertrophy and become 

 detached, falling into the lumen of the tubules, where they disintegrate 

 and liberate the parasites. In the -larger parasites the nuclei multiply 

 till the whole cell is fully occupied ; here the nuclei are relatively larger 

 and less readily stainable. In the pansporoblasts there arise drop-like 

 inclusions which may become numerous and cover the nuclei. These 

 are regarded as degeneration products, inducing a breaking up of the 

 plasma with consequent liberation of the spores. 



Myxosporidian Parasite of FIounder.§ — S. Awerinzew finds that 

 Lymphocystis johnstoni Woodcock is probably referable to the genus 

 Heiineguya, and he therefore provisionally names it Henneguy a johnstoni 

 Woodcock. It appears to occur in about 11 p.c. of Pleuronectes flesiis, 

 occurring at Murman. An account of its spores is given. 



Myxosporidia of the Gall-bladder in Fishes. |] — S. Awerinzew dis- 

 cusses several Myxosporidia from the gall-bladder of fishes. In par- 

 ticular he describes Ceratomyxa ramosa sp. n. from the halibut. It is 

 distinguished by branching and at times anastomosing pseudopodia in 

 its trophozoite stage. The spores resemble those of G. sphcerulosa in 

 size. On account of convergence occurring in the matter of spore struc- 

 ture, their characters are of secondary value in classification. 



* Philippiue Journ. Sci., ii. (1907) pp. 83-91 (3 pis.). 

 t Comptes Rendus, cxliv. (1907) pp. 518-20. 



X Arch. f. Protistenk., viii. (1907) pp. 398-412 (2 pis.). See also Zool. Centralbl.„ 

 siv. (1907) pp. 100-1. 



§ Zool. Anzeig., xsxi. (1907) pp. 881-4 (5 figs.). || Tom. cit., pp. 881-4 



