51 



• concerned is described and is provisional!}^ named Trypanosoma mandae ; 

 it greatly resembles T. congolense and T. pecorimi. The clinical aspect 

 of the disease is also discussed. Experimental infection was success- 

 fully carried out on indigenous sheep, but the pathogenicity of the 

 organism to equines could not be verified. 



Van den Branden records Stomoxys calcitrans as the transmitter of 

 T. congolense [R. A.E., B, viii, 17] in the middle Congo, and in Ruanda 

 Stomoxys is also believed to be the vector of T. mandae. The organisms 

 were easily isolated from the gut of the flies, but had disappeared by 

 the following day. Trypanosomes could not be traced in the proboscis 

 of Stomoxys. Experiments in infection by means of these flies are now 

 in progress. 



RouBAUD (E.). recondite et Longevity de la Mouche domestiaue.— 



C.R. Hehdom. Acad. Sci., Paris, clxxiii, no. 22, 28th November 

 1921, pp. 1126-1128. 



The reproductive powers and duration of adult life in the house-fly 

 [Musca domestica] are discussed. It is considered that during hot 

 weather in summer one individual produces at least 600 eggs in the 

 course of 40 to 60 days. 



Brug (S. L.) & KoRTHOF (G.). Verslag van een Onderzoek naar de 

 desinfecteerende Werking van Izal. [A Report on an Investigation 

 on the disinfecting Action of lza.l.]—Geneesk. Tijdschr. Ned.- 

 Indie, Batavia, Ixi, no. 5, 1921, pp. 551-564. 



Izal is inferior to creolin when used against mosquito larvae in the 

 dilutions commonly employed, and is therefore not recommended as 

 a larvicide. Creolin 1 part in 25,000 of water, izal 1 in 2,500, and 

 sapocarbol 1 in 1,000, proved fatal in 24 hours to the larvae of Culex. 

 The low msecticidal action of sapocarbol is remarkable ; it contains 

 62-5 per cent, of cresol, and previous experimenters with cresol 

 obtained satisfactor}^ results. 



Martini (E.). Ueber die Eier unserer Anopheles. [A Note on the Eggs 

 of German Anophelines.]— Ccw/ra/6/. Bakt., Paras. Infekt., Jena, 

 lie. Abt., Orig., Ixxxvii, no. 5, 17th December 1921, pp. 362-365,' 

 4 figs. 



The more important differences between the eggs of Anopheles 

 macidipennis, A. bifurcatns and A.plumbeus {nigripes) are figured and 

 discussed. 



KiEFFER (J.-J.). Chironomides de PAfrique Equatoriale. (l«ePartie.) 

 — Ann. Soc. Ent. France, Paris, xc, pt. 1, 1921, pp. 1-56, 2 plates. 



The new species described are : — Lepidohelea ornatipes from 

 Kamerun ; L. nilotica and Ceratopogon niligena from the Sudan ; 

 C.leucochaetus, C . kribiensis , Kempiapnsilla, Atrichopogon brevicellula, 

 A. conglomeratus and A. kribiensis from Kamerun ; A. conglomeratu's 

 var. niloticiis, n., and A. nilicola from the Sudan ; Dasyhelea punctatt- 

 pennis, D. nudipennis, Cidicoides dentatus, C. hisignatus, C. citrinus. 

 C. quadrisignatus, C. kribiensis and C. trisignatus from Kamerun ; 

 C. octosignatus from the Belgian Congo ; C. nilogenus, C. signatns 

 and C. nilophilus from the Sudan ; Nilohelea albipennis from the 



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