166 



Theileria mutans is transmitted by R. simus, R. evertsi and 

 occasionally by R. appendicvlaUis. It may also be carried by 

 Hyalomma aegyptium,. R. bursa and R. sanguineus are also suspected 

 as probable hosts. 



AnajMsma marginale may be transmitted by Margaropus annulatus 

 decoloratus and Rhipicephalus simus. Anaplasma centrale is transmitted 

 by M. a. decoloratus. The carrier of Anaplasma argentinum, which is 

 morphologically identical with M. marginale and is believed to have 

 been imported into S. America with cattle from Spain, has not been 

 determined, but is probably a species of Amhlyomma. 



The pathogenic role of Piroplasma hudsonius bovis in British Colum- 

 bia has not so far been ascertained, but it is probably transmitted by 

 Dermacentor venustus. 



Sergent (Et.). La Diagnostic de I'lnfection latente dans le Paludisme 

 des Oiseaux {Plasmodium relictum). — C.R. Soc. Biol., Paris, 

 Ixxxiii, no. 25, 17th July 1920, pp. 1063-1064. 



The various methods of diagnosing latent malarial infection m birds 

 are discussed. 



Chapin (R. M.). The Chemical Composition of Lime-Sulphur Animal 



Dips. — U.S. Dept. Agric, Washington, D.C., Bull. 451, 14th 

 December 1916, 16 pp. [Received 27th July 1920.] 



The reactions in lime-sulphur animal dips occurrmg as a result of 

 storage, lime added after dilution, and variation in the ratio of lime- 

 sulphur, of period of boiling and of concentration, etc., are discussed. 



Hirst (S.). Notes on Acarl parasitic on Birds, with Descriptions of 

 two new Species. — Ann. Mag. Nat. Hist., London, v, no. 31, July 

 1920, pp. 121-122. 



The mites dealt with include : Syringophilus columbae, sp. n., on 

 pigeons in Texas ; Pterolichus sculpturatus, sp. n., on ostriches in the 

 Transvaal ; P. bicmidatus, Gerv., on South African ostriches m Cape 

 Colony and California ; and Lijjonyssus silvanmi, C. & F., on sparrows 

 and poultry in the United States. This is apparently the first record 

 of the latter species occurring on poultry. In Russia it has been 

 found on Motacilla alba. 



RouBAUD (E.). Emploi du Trioxymethylene en Poudre pour la 

 Destruction des Larves d'AnojjJieles. — C.R. hebdom. Acad. Sci., 

 Paris, clxx, no. 25, 21st June 1920, pp. 1521-1522. 



Powdered trioxymethylene sprinkled evenly on the surface of water, 

 causes the destruction of any Anopheles larvae devouring it. Ponds, 

 etc., might be treated at regular intervals to prevent the development 

 of adult Anophelines as the powder in no way renders the water unfit 

 for use or poisonous to cattle or fish. The operation should be carried 

 out as far as possible during warm, sunny weather when the feeding 

 activity of the larvae is at its greatest. 



