436 SUMMARY OF CURRENT RESEARCHES RELATING TO 



occurs ill at least two forms : a round one, 1-2 /u, in diameter with a 

 central vacuole, and a piriform. Free forms in the blood are rare. 



Myxobolus of Haddock.* — M. Auerbach gives some further notes 

 regarding Myxoholus (^gUfiiii Auerb. The cysts occur inside the bone 

 or cartilage of the head. If in the former, they lie in a normal hollow 

 unattached ; in cartilage the cavity appears to have been caused by the 

 parasites. The spore formation is described ; in the pansporoblasts the 

 number of nuclei is 10. Many abnormal spores occur, e.g., with 1 or 3 

 polar capsules. One gigantic spore 14 • 4 /a in section was observed. 



Bird Trypanosomes of Portugal.t — A. Bettencourt and C. Fran9a 

 investigated, both by direct examination and by means of cultures, 158 

 birds. Of these, HS yielded positive results, made up as follows :— 

 Diurnal carnivores, 1 out of 12 ; nocturnal carnivores, 6 out of 15 ; 

 granivores, 4 out of 27 ; omnivores, 3 out of 39 ; insectivores, 24 out 

 of 60. Cultures were found useful in several cases in yielding parasites 

 where direct examination failed to reveal them, but cultures are not 

 satisfactory in species diagnosis. The cultural form is often different 

 in shape and size from the natural form, and cultures of morpho- 

 logically distinct species may yield identical forms. 



Life-history of Echinomera hispida.J — C. Schellack describes the 

 life-history uf this parasite of Lit/iobius, devoting particular attention to 

 structural changes in the nucleus, the mitotic processes, the formation of 

 ova and speniiatozoa, the " epuration " phenomena, which Schaudinn 

 regarded as a reduction, and the details of fertilisation. 



New Trypanosome.§ — A. Laveran describes Tr. pecmidi sp. n. from 

 Equidffi and Bovidie in the Soudan. It can be introduced into most 

 mammals, such as sheep, goats, dogs, rats, mice, with various conse- 

 quences. The author distinguishes it from Tr. dimorphon and other 

 forms. 



* Zool. Anzeig.,xxxi. (1907) pp. 115-19 (5 figs.). 



t Arch, do real Inst. Bact. Camara Pestana, i. fasc. 2 (1907) pp. 333-6. 



X Zool. Anzeig., xxxi. (1907) pp. 283-90. 



§ Comptes Rendus, cxliv. (1907) pp. 243-7. 



