ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 327 



1. The blood of cattle in Uganda almost always contains Piroplasma 

 biyeminum and P. mutatis, and the cattle are, therefore, immune to 

 these two diseases. 2. The disease of calves called Amakebe is the 

 East Coast Fever discovered by Koch, so that very many of the cattle 

 in Uganda are almost immune to this disease. 3. Owing to the nature 

 of East Coast Fever, inasmuch as animals recovered from the disease 

 .are no longer infective, some calves may escape attack of Amakebe, and 

 so remain susceptible. 4. Thus the calves of the Sesse Islands escape 

 Amakebe, and when as grown-up cattle they are transferred to the 

 mainland, they mostly die of the East Coast Fever. 5. The carriers of 

 East Coast Fever — Rhipicephal us appendiculatus, or brown tick ; R. 

 evertsi, or red-legged tick ; and R. simus — are all common in Uganda. 



Mastigamoebae.* — E. Penard gives an account of some of these 

 interesting forms which have amoeboid characters combined with the 

 possession of a genuine flagellum. It may be rudimentary and it is 

 often useless, but it is a true flao-ellum, with the characteristic basal 

 granule. Penard deals with forms which occur in the vicinity of 

 ■Geneva — Mastiyanucba aspera F. E. Schulze ( = Dinammba mirabilis 

 Leidy), two new species of Mastigammba, two of Mastigina, and one of 

 Mastigella. 



New Parasitic Amoeba.f — E. Chatton describes Amceba mueicola 

 sp. n., which he found as a parasite on the gills of a Labrid fish 

 (Symphodus tinea), and associated with an Infusorian belonging to the 

 genus Trichodina among the Ciliata. The fishes die with all 'the signs 

 of asphyxiation, but it is not proved that Amoeba mueicola is an habitual 

 parasite. Some minute amoeboid forms, perhaps young stages of the 

 amceba, were seen inside some specimens of Trichodina and developing 

 there. 



Leucocytozoon of the Fowl. J— C. Mathis and M. Leger find that 

 there is a certain periodicity in the appearance of the sexual forms of 

 Leucocgtozoon caidlergi in the peripheral circulation of the fowl. They 

 may be absent for forty days or for twenty-one. It is not known what 

 organs are the seat of schizogony and of the development of the adult 

 forms. Xor is the invertebrate host known in which the sexual multi- 

 plication occurs. 



Notes on Parasitic Protozoal — T. Harvey Johnston has notes on 

 Leucocytozoon (Hsemogregarina) maris Balfour from Mas alexandrinus 

 and M. decumanus, Halteridium nettionis sp. n. from a teal (Nettion 

 (Anas) castaneum), Plasmodium passeris sp. n. from the common sparrow, 

 and a number of other forms. 



Hsemogregarines in Australian Reptiles. || — T. Harvey Johnston de- 

 scribes three new species : Hsemogregarina morellse, from a carpet-snake 

 (Python), H. pseudechis, from a black : snake (Pseudechis), and H. clelandi, 

 from a tortoise (Chelodina). 



* Rev. Suisse Zool., xvii. (1909) pp. 405-39 (2 pis.). 



tfC.R. Soc. Biol. Paris, lxvii. (1909) pp. 690-2. J Tom. cit., pp. 688-90. 



§ Proc. Linn. Soc. N.S.W., xxxiv. (1909) pp. 501-13 (1 pi.). 



]| Tom. cit., pp. 400-10 (2 pis.). 



