1132 SUMMARY OK CURRENT RESEARCHES RELATING TO 



Myxomycete plasmodia. The body divides into several unequal parts 

 comparable to the formation of macrocysts in Myxomycetes, according to 

 Zopf s description. 



"Trichites" in Didinium.* — E. Faure-Fremiet describes in this 

 large ciliated Infusorian what he calls "trichites." These are intra- 

 protoplasmic filaments of great tenuity, forming a sort of armature for 

 the pharynx. They are straight or gently curved, quite smooth, and 

 pointed at the ends. They are elastic and albuminoid ; but the author 

 finds that altogether similar filaments may be induced artificially by 

 using a concentrated solution of sulphate of magnesium, which brings 

 about a partial precipitation of the cytoplasm. 



Notes on Flagellates.f — A. Alexeieff deals with Octomitus intestinalis 

 Prowazek from rat, newt, and axolotl ; J J ohjinasti.r iatrachorum sp. n. 

 from Triton tseniatus ; Monocercomonas bufonis Dobell from newts, 

 axolotl, and frogs ; Heteromita lacertse Grassi in newts, axolotl, and 

 salamander ; Rhizomastix gracilis g. et sp. n., a rare form from the 

 axolotl, which approaches Orcomonas and Gercomonas ; Ghilomonas 

 parametrium Ehrbg. ; and a number of other forms. 



Classification of Trypanosomes in Mammals. J — A. Laveran directs 

 attention to the large number of Trypanosomes which have been re- 

 corded, and the lack of precise description in the majority of cases. The 

 identification of species should rest (1) on structural characters, such 

 as the disposition of the flagellum ; (2) on the vital properties, such 

 as whether the form is pathogenic or not ; and (3) on special characters 

 discovered by serum-diagnosis and the like. 



The non-pathogenic Trypanosomes of Mammals may be divided into 

 those of small Mammals and those of Bovidee. The pathogenic Trypano- 

 somes of Mammals may be divided into those in which the flagellum 

 has always a free portion ; those in which the flagellum has no free 

 portion ; and those wdiich occur in both states. Besides these there are 

 many doubtful species. 



Frog Trypanosomes in Japan.§ — M. Koidzumi has studied the 

 Trypanosomes found in Rana temporaria, R. esculenta, and R. rugosa, 

 distinguishing various types, but coming to the conclusion that there is, 

 after all, but one species, Trypanosoma rotatorium. 



Trypanosomes in Fresh-water Fishes. || — C. Mathis and M. Leger 

 describe Trypanosomes in a number of well-known fishes from Tonkin, 

 such as Anabas scandms, Garassius auratus, and Afacropodi/s riridi- 

 auratus. 



Ca3cal PaVasites of Fowls.lf— C. H. Martin and Muriel Robertson 

 deal with Ghilomastix gallinarum, Trichomonas gallinarum, T. eberthi, 

 Trichomastix gallinarum, all of them new species from the caeca of 



* C.R. Soc. Biol., lxxi. (1911) pp. 146-7. 



t Arch. Zool. Exper., vi. (1911) pp. 491-527 (15 figs.). 



I Ann. Inst. Pasteur, xxv. (1911) pp 497-517 (1 fig.). 



§ Centralbl. Bakt. Parasitenk., lviii. (1911) pp. 454-60 (1 pi.). 



,| C.R. Soc. Biol. Paris, lxxi. (1911) pp. 185-7. 



\ (Juart. Journ. Micr. Sci., lvii. (1911) pp. 53-81 (5 pis. and 4 figs.). 



