13 



Venezuelan Reduviids have a marked preference for roofs recently 

 thatched with Guinea grass, in which they multiply in such numbers 

 as to make the huts uninhabitable. 



RivAS (J. A.). Contribucion al Estudio de los Ixodes de Venezuela. 



[A Contribution to the Study of the Ixodidae in Venezuela.]— 



Anales Direc. San. Nac, Caracas, i, no. 1-2, January-June 1919, 



pp. 112-119. [Also in English.] 



There is no new information in this paper, which briefly describes the 



following ticks: — Rhipicephalns sanguineus punctatissimus , Gerst., 



transmitting Piroplasma [Babesia) canis to dogs ; R. simus, Koch, 



transmitting Theileria parva to cattle ; R. bursa. Can., suspected of 



transmitting Piroplasma ovis to sheep ; Margaropus annulatus australis, 



Fuller, from which it is possible to infect cattle with Piroplasma bovis ; 



Amblyomma cajennense, F. ; A. americanimi, L. ; A. concolor, Neum. ; 



and Dermacentor nitens, Neum. 



Nunez Tovar (M.). Fauna Anofelina de Venezuela. [The Anopheline 

 Fauna of Venezuela.] — Anales Direc. San. Nac, Caracas, i, no. 3, 

 July-September 1919, pp. 255-256. [Also in Enghsh.] 

 The Anopheles of Venezuela are : — A. tarsimaculatus, A. pnnctipennis, 



A. pseiidopunctipennis, A. argyrotarsis, A. albimanns, and one 



species as yet unidentified. 



Nunez Tovar (M.). Nota Sobre un Brote de Tristeza en el Estado 



Aragua. [Observations on an Outbreak of Texas Fever in the 

 State of Aragua, Venezuela.] — Anales Direc. San. Nac, Caracas, i, 

 no. 4, October-December 1919, pp. 434-437. [Also in EngUsh.] 

 [Received 10th November 1920.] 

 Observations are recorded on an outbreak of Texas fever in Vene- 

 zuela in 1919. It is not known in what other parts of Venezuela the 

 disease occurs, but its distribution probably includes ah territory 

 where climatic conditions are favourable to ticks. While certain 

 ticks are the usual transmitting agents of Piroplasma bigeminum, 

 the specific cause of the disease, recent observations indicate the 

 possibihty of certain blood-sucking Diptera, such as Stomoxys calcitrans, 

 also acting as intermediate hosts. 



In the various countries where the disease is endemic there are certain 

 differences in the clinical manifestations and a number of different 

 ticks act as vectors. The collection of ticks obtained on the present 

 occasion from 50 cases of Texas fever was composed entirely of adult 

 examples of Boophilus annnlaius. 



Christophers (S. R.). A Summary of recent Observations upon the 



Anopheles o£ the Middle East.— /w^mn //. Med. Res., Calcutta, vii, 



no. 4, April 1920, pp. 710-716, 3 maps. [Received 7th November 



1920.] 



The distribution of the Anophehne fauna of Asia Minor, Syria, 



Palestine, Arabia, ' Mesopotamia, Persia, Turkestan, Afghanistan 



and Baluchistan is discussed. The species involved include A. pul- 



cherrimus, Theo., A. pharoensis, Theo. ; A. superpictus, Grassi ; 



A. turkhudi. List. ; A. maculipennis, Meig. ; A. bifurcatus, L.; A. plum- 



beus, Hal.; A. stephensi. List.; A. hyrcamts, Pall, {sinensis, Wied.) ; 



A. costalis, Lw. ; A. rhodesiensis, Theo.; A. pretoriensis, Theo.; 



A. cinereus, Theo. ; and A. culicifacies, Giles. 



