ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 633 



fowls. They point out that until the whole life-cycles are known, the 

 breaking- up of the complex series of forms inhabiting the caeca of fowls 

 into good species is a matter of great difficulty, but they indicate the 

 characteristic features of the four forms which they have distinguished, 

 as above stated. 



Cilium of Treponema pallidum.* — C. Levaditi records his observa- 

 tions of a terminal cilium in this parasite of syphilis. It is visible on 

 the living organism ; it has a filiform free end; its thickness is about 

 one-third that of the rest of the organism ; it has eight to ten deep un- 

 dulations : it is actively mobile, and it seems as if the organism moves 

 with the cilium behind. 



Leptomonad of the House-fly. — J. S. Dunkerly describes some 

 stages in the life-history of Leptomonas muscse domesticse, distinguishing 

 (1) a typical Leptomonad form which actively divides in the intestine or 

 in the Malpighian tubules of the fly, and (2) very actively slender forms, 

 often with an undulating membrane. These are produced by the others. 

 They probably encyst while attached in large numbers to the rectal wall, 

 and the cysts may be passed out with the faaces to give rise to flagellate 

 forms in another fly. 



Haematozoa of Australian Batrachians.J — J. Burton Cleland and 

 T. Harvey Johnston describe a Trypanosome (perhaps Trypanosoma 

 rotatorium (Mayer) from Queensland frogs (Lymnodynastes), and Hsemo- 

 gregarina {Lankesterella) hylse sp. n. from the common " Green-tree- 

 frog." Hyla cserulea. 



Studies on Haematozoa. — C. Franca § reports on some Hasmatozoa 

 of Portuguese Guinea : Trypanosoma lewisi Kent, very common in Mus 

 raft as •. a Haemogregarine from a tortoise (Sternotltserus derbianus) ; an- 

 other from Varanus niloticus. 



In another paper || Franca describes Hsemogregarina pestanse sp. n. 

 (from Bufo regularis) ; Trypanosoma bocagei sp. n. (reported by others 

 as T. rotator turn), from the same ; Toddi/i bufonis g. et sp. n., from the 

 same ; and some other forms, all from Guinea. 



In a third paperlf he deals with Haemogregarines from Portuguese 

 fresh -water tortoises. 



Parasites of Leucocytes in Brown Rat.**— C. Franca and M. Pinto 

 discuss the various parasites which have been found in leucocytes since 

 Bentley's discovery in 1905. In the family Haamogregarinidae they 

 recognize two genera, Hsemogrcgaritia Danilewsky (= Drepanidium, 

 Kariolysus, and Danilewslcga) and Leucocytogregarina Porter ( = Leuco- 

 cytozoon Danilewsky pro parte, and Hepatozoori). They go on to de- 

 scribe stages in the life-history of Leucocytogregarina maris (Balfour). 



* C.R. Soc. Biol., lxxi. (1911) pp. L56 8 1 1 fig.). 

 t Quart. Journ. Micr. Sci., lvi. (1911) pp. (345-55 (1 pi.). 

 X Journ. R. Soc. N.S. Wales, xliv. (1910) pp. 252-60 (1 pi.). 

 § Arch. Inst. Bacter. Caniara Pestana Lisbon, iii. (1911) pp. 201-5 (3 figs.). 

 Arch. Inst. Bacter. Camara Pestana Lisbon, iii. (1911) pp. 229-38 (1 pi.). 

 •jf Arch. Inst. Bacter. Camara Pestana Lisbon, iii. (1911) pp. 239-44 (2 figs.). 

 ** Arch. Inst. Bacter. Camara Pestana Lisbon, iii. (1911) pp. 207-17 (2 pis.). 



