Resume of Recent Scientific Publications. 447 



(not Klug) is synonymous with Y. doleta, Kirby ; a new species, 

 Gacyreus marshalli, is described and figured, and a new genus 

 Chrysoritis created for Zeritis oreas, Trim. 



Tkimen, Eoland. " On Some New or Little Known Species of 

 African Butterflies." Transactions Entomol. Soc. of London, 

 1898, part 1, pp. 1-16. 



Contains descriptions and figures of 7 new species, including 

 1 representative of Acrceince, 6 of Lyccenidce, and 1 of Hes- 

 periidce. The Lyccenidce are all natives of Mashunaland, the 

 locality of the Acrcea is not known, and the Pyrgus is from 

 Delagoa Bay. One of the Lyccenidce presents characters that 

 amount to generic value, and the author proposes for it a new 

 genus (Desmolyccena). Two others, Lyccena gigantea and 

 Mimacrcea marshalli, exhibit mimetic relations with the pro- 

 tected group Acrceince. 



DlPTERA. 



Bruce, Surgeon-Major David, A.M.S. "Further Eeport on the 

 Tsetse Fly Disease or ' Nagana ' in Zululand." London, 1897, 

 with 6 plates. 



A very elaborate report, completing a preliminary one pub- 

 lished in Durban, Natal, in 1895, and dealing with the definition 

 of the disease, its distribution in Zululand, the etiology of the 

 same, and the relation of the big game to the Fly Disease, an 

 account of inoculation of blood from affected to healthy animals 

 and the medicinal treatment. 



The investigator's conclusions are that the " Nagana " disease 

 is caused by the entrance into the blood of a minute parasite 

 {Hcematozoon), which multiplies there and causes death. That 

 this parasite exists on the blood of many animals, and that it is 

 conveyed from animal to animal by the Tsetse Fly (Glossina 

 morsitans), or by the eating of the raw flesh of animals affected 

 by the disease. It is also now known that the disease is limited 

 to certain tracts of country having certain physical features. 

 Five experiments showed that horses cannot be taken with 

 impunity for a few hours in the Fly country, even although they 

 are not allowed to eat and drink there. It is not known how 



