185 



Heport of the Proceedings of the Hayling Mosquito Control from 

 September, 1920, to June, 1922.— Southsea, 1922, 12 pp., 8 figs. 



The anti-mosquito work at Hayling Island [cf. R.A.E., B, x, 120] 

 ■during 1922 included experiments with fish as destroyers of the larvae. 

 In this connection Gohius microps, found in sea-filled ditches, gave 

 promising results as a possible check upon the activities of Aedes 

 {Ochlerotatiis) detritus. 



Martini (E.). Bestimmungsschlussel fiir die deutschen Steehmiieken- 



Arten. [A Key to German Mosquitos.] — Wiener Ent. Zeitg., 

 Vienna, xxxix, no. 1-4, 30th March 1922, pp. 97-104. [Received 

 20th July 1922.] 



Since the publication of the author's monograph on European 

 mosquitos [R.A.E., B, ix, 35], further species have become known, 

 and these probably occur in Germany, Austria, etc. This key covers 

 all the above species. 



Carpano (M.). Sulla Piroplasmosi equina in Italia. [Equine Piro- 

 plasmosis in Italy.] — La Clinica Veterinaria, Milan. (Abstract 

 in Ann. d' Igiene, Rome, xxxii, no. 5, May 1922, pp. 409-410.) 



The author shows experimentally that the blood of horses affected 

 with Babesia cahalli ceases to be infective when the animals are clinically 

 cured, whereas that of horses affected with Nuttallia equi remains 

 infective many months after the animals are cured, so that they 

 remain reservoirs and carriers of the virus. This explains the epizootic 

 differences between the two forms of piroplasmosis concerned. That 

 due to B. cahalli, which in Italy is transmitted by Boophilus {Marga- 

 Toptis) annidatus, has a very restricted geographical distribution, partly 

 because the tick must attach itself while the horse is suffering from the 

 disease, and partly also because this tick, once attached, remains all 

 its life on a single host. That due to A^. equi, on the contrary, is much 

 more widespread. The vector, Rhipicephalns bursa, can become 

 infected on horses that have recovered months previously, and as it 

 passes its life-cycle on two separate hosts, the infection acquired from 

 one horse may be passed on to another. 



Blanchard ( — ), Lefrou ( — ) & Laigret ( — ). Note pr^liminaire sur 

 des eas d'Icteres epid6miques observes a Brazzaville (A. E. F.). 

 —Bull. Soc. Path. Exot., Paris, xv, no. 6, 14th June 1922, 

 pp. 385-387. 



From December 1921 to April 1922 fifteen cases of infectious jaundice 

 were observed in natives from the south-east of the French Congo. 

 Blood from one case was inoculated into a guinea-pig, which then died 

 of a conjunctival jaundice, spirochaetes similar to those in the patient 

 being found in its blood and internal organs. Sixteen bed-bugs, Cimex 

 lectularius, from the beds of some of the patients were ground up, and 

 a guinea-pig, inoculated with an emulsion prepared from them, also 

 succumbed to conjunctival jaundice. An emulsion of its liver proved 

 fatal to another guinea-pig, in which spirochaetes similar to those in 

 patients and in the guinea-pig mentioned first were found. It would 

 therefore appear that the causal organism of a grave form of jaundice 

 and at least one of its vectors were observed. 



