187 



symptoms. It would therefore appear that Uzards and such reptiles 

 act as a reservoir for the virus of verruga, and that an intermediate 

 host is not required, Phlebotomus being merely a mechanical carrier 

 and not a true alternative host of the organism. It remains yet to be 

 proved whether reptiles are the sole reservoir of the virus or whether 

 mammals may also carry it, though the author rather inclines to the 

 former view. 



Knab (F.). a Review of our species of Trigonometopus (Diptera ; 

 Lauxaniidae). — Psyche, Boston, Mass., xxi, no. 4, August 1914, 

 pp. 123-126. 



Two species of Trigonometopus, viz. : — T. aiigustipennis, sp. n., 

 from Guadeloupe, West Indies, and T. albifrons, sp. n., from Nicara- 

 gua and Guatemala are described. Another specimen from Biscay ne, 

 Florida, is identified as T. vittatus, L. 



Ludlow (C. S.). A New Anopheline. — Psyche, Boston, Mass., xxi 

 no. 4, August 1914, pp. 129-130. 



Anopheles {Myzomyia) parangensis, sp. n., is described from 

 specimens taken in October and November from Parang, Mindanao, 

 Philippine Islands. 



Chalmers (A. T.) & O'Farrel (Capt. W. R.). Sleeping Sickness in 

 the Lado of the Anglo-Egyptian Sudan. — Jl. Trop. Med. and 

 Hyg., London, xvii, no. 18, 18th Sept. 1914, pp. 272-284, 1 map. 

 8 tables. 



This is a first of a proposed series of short notes on sleeping sickness 

 in various parts of the Anglo-Egyptian Sudan. The history of the 

 discovery of the trypanosomes of sleeping sickness and of the disease 

 itself in the Belgian Congo and Uganda, countries adjoining the Lado, 

 is reviewed. The presence of the disease has been recognised in the 

 Lado since 1908, and in 1910 it had extended northwards along the River 

 Yei and westwards along the River Tone. In 1911, an entomological 

 survey of the Lado made by H. H. King showed that Glossina palpalis 

 was to be found in every suitable place in the district, and the 

 distribution of this species and of G. morsitans in this region was then 

 mapped. Further investigations have led to the conclusion that there 

 are two main areas of infection in the Mongalla Province : a western, 

 centred around Yei, and an eastern, adjoining Kajo-Kaji. These 

 seem to have arisen from two distinct sources of infection, the western 

 from the Belgian Congo and the eastern from Uganda. 



In 1913, experimental work was carried out in Khartoum on a 

 strain of trypanosomes obtained from animals inoculated from sleep- 

 ing sickness patients at Yei and temporarily called the Yei trypano- 

 some. Examination of this form and comparisons of it with 

 T. rhodesiense, T. nigeriense, T. gambiense, Congo and Uganda strains, 

 leads to the conclusion that the Yei strain and the Congo strain are 

 the same and that in all probability they and the Uganda strains 

 are also the same. Since the determination of T. gambiense, Dutton, 

 (1902) is still so problematical, the authors prefer to keep the name 

 T. castellanii, Kruse, (1903) for these three similar strains. In con- 

 clusion the following divisions for the forms of sleeping sickness of 



