62 



Evans (A. M.). Notes on Culicidae in Venezuela. — Ann. Trop. Med. & 

 Parasit., Liverpool, xv, no. 4, 30th December 1921, pp. 445-454, 

 2 plates, 3 figs. 



In the course of the investigations in Venezuela described in the 

 previous paper the following mosquitos were collected : Anopheles 

 argyritarsis, R.D., A. albimanns, Wied., A. alhimanus var. tarsi- 

 maculatus, Goeldi, A. pseudoptmctipennis, Theo., Aedes serratus, 

 Theo., A. scapularis, Rond., A. trivittatus, Coq., A. argenteus, Poiret 

 {Stegomyia fasciata, F.),Culex {N eomelanoconion) chrysothorax, Newstead 

 & Thomas, C. coronator, D. & K., C. nigripalpiis, Theo., C. virgulhts, 

 Theo., C.fatigans, Wied. {quinquefasciatus, Say), Psorophora posticata, 

 Wied., and Joblotia digitata, Rond. 



The morphological characters of Anopheles argyritarsis and A. 

 albimanns are discussed. 



Davey (J. B.) & Newstead (R.). Mosquitoes and other Bloodsucking 

 Arthropods of the Upper Shiri River, Nyasaland. — Ann. Trop. Med. 

 & Parasit., Liverpool, xv, no. 4, 30th December 1921, pp. 457-462. 

 ■ The species dealt with include ticks, Psychodids, Tabanids, and the 

 following mosquitos : Anopheles {Myzorhynchus) mauritianus, Grp., 

 A. {Cellia) pharoensis, Theo., A. {Pyretophorus) costalis, Lw., A. 

 (Myzomyia) funestus, Giles, Mansonioides uniformis, Theo., Culex 

 tigripes, Grp., Ingramia {Mimomyia) uniformis, Theo., Etorleptiomyia 

 mediolineata, Theo., and Taeniorhynchus aurites, Theo. 



Blacklock (B.). Breeding Places of Anopheline Mosquitoes in Free- 

 town, Sierre Leone. — Ann. Trop. Med. & Parasit., Liverpool, 

 XV, no. 4, 30th December 1921, pp. 463-471, 5 plates, 3 maps. 



With a view to ascertaining whether the streams traversing Freetown 

 and referred to by previous authors as Anopheline breeding places 

 still act as such, the observations here described were carried out at the 

 end of the dry season of 1921. The results obtained show that the 

 breeding places are present in largest numbers at the lower end of the 

 stream and become less numerous as one proceeds through the town. 

 They occur again above the town, but not in such abundance as below. 

 The residual breeding places at the end of the dry season are either 

 at the edge of the winding and eroded bed of the stream just before 

 its entrance into the sea, or in the shallow water, well protected by 

 vegetation and extending over a large surface, found at the places of 

 origin of the streams. 



Anopheles costalis, which is the predominant species at the end of 

 the dry season, was the only Anopheline taken. In the early days of 

 mosquito investigation in Freetown this species was also the commonest 

 species at the end of the wet season. Owing to lack of time the 

 dissection of adults has been postponed for a future date. 



The previous suggestions for dealing with the Anopheline breeding 

 places are reviewed. The entire obliteration of the streams appears 

 to be the only permanently effective method of deahng with them, 

 though whether such a scheme would be practicable can only be decided 

 after considerable investigation. 



Blacklock (B.). Notes on an Apparatus for the Individual Breeding 

 of Mosquitoes. — Ann. Trop. Med. cr Parasit., Liverpool, xv, 

 no. 4, 30th December 1921, pp. 473-477, 5 figs. 

 By means of the apparatus here described the breeding of individual 



mosquitos from any stage in which they are collected is facilitated. 



