27 



upon his eiitoniological investigations in West Africa [Bull. Entom. 

 Research, ii, pp. 187-239 ; ii, pp. 301-356 ; iii, pp. 137-193]. These 

 investigations took the form of tours in the various Colonies for the 

 purpose of studying the mode of occurrence and the distribution of all 

 blood-sucking insects, in view of their potential poAver to transmit 

 diseases, and with the further object of stimulating medical officers 

 and others to interest themselves in this direction. From March to 

 November 1912, the author journeyed continuously in Sierra Leone. 

 An account is given of the general physical features of the country, 

 its vegetation, rainfall, etc., while the accompanying map shows the 

 areas in which the different species of Glossina occurred. After 

 describing the tour in general, the author goes on to enumerate the 

 species of blood-sucking insects and other Arthropods which occur in 

 Sierra Leone. The Diptera include 17 species of Culicidae, 30 

 species of Tabaxidap:, five species of Muscidae. one Culicoides and one 

 Sinndiuni ; in addition to these there are three species of fleas and 

 ten of ticks. The native names for the more familiar insects are 

 given. 



Regarding the insect-borne diseases, the author says that the most 

 prevalent of these is malaria ; very little is known as to the actual 

 species of mosc^uitos responsible for its transmission, but probably 

 A^iopheles fioiestus and A. costalis are involved. The disease is on the 

 decrease, o^ving to the use of mosquito nets, and moscjuito-proof rooms, 

 the use of Cjuinine, the segregation of European from native quarters, 

 and the sanitary measures adopted for the diminution of the number of 

 mosquitos. Yellow fever has recently occurred in Freetown, where the 

 species Stegomyia fasciata is ubi<iuitous, but stringent measures are 

 being adopted for its diminution. Only one case of sleeping sickness 

 has been recorded from Sierra Leone ; other suspicious cases examined 

 showed no trypanosomes. Trypanosomiasis is very prevalent among 

 stock, but does not cause a heavy mortality. 



The genus Glossina is represented in Sierra Leone by five species, 

 namely : — G. palpalis, G. fusca, G. kyngipalpis, G. paUicera, and G. 

 nigrqfusca. The genus Sfegoniyia is represented by three species, 

 namely : — S. fasciata, S. siigens, and S. apicoargentea . The distribution 

 of these species is given. A list is given of the various ecto- and endo- 

 parasites from mammals, birds and reptiles examined. 



Knab (F.). a Note on some American Simultidae. — Insecidor 

 Insciliae Moustnais, Washiia/foii, i, no. 12, Dec. 191 3. pp. 

 154-150. 



The nomenclature of certain species of SiinnliinH is discussed. 

 A new Siniulium from Venezuela was described by Roubaud in 190(j 

 under the name S. exiguum ; in 1909 a different species from Brazil 

 was described by Dr. A. Lutz, under the same name ; in 1911, Surcouf 

 and (Jonzalez Rincores proposed the name ;S. niinutum for the S. 

 exiguum of Lutz ; this name is also preoccupied, having been given to 

 a North American species by Lugger in 1896. The author, therefore, 

 proposes the new name Simulmm lutzi for the species of Lutz. He 

 also indicates that S. bipuncta(u)n, Malloch. is a synonym of S. dmelhi, 

 Joan. 



