— I 3 2 — 
Sir Daniel Morris (Londres) parle de la : 
Destruction des Holistiques par un Poisson aux îles Barbados. 
(Résumé.) 
On the favourable action of a small Fish locali) 7 called « mil¬ 
lions » ( Girardinus pœciloides Filippi) in maintaining pools and 
swamps in Barbados, West Indies, free from Mosquitos. Culex and 
Stegomyia breed freely in that island in all sorts of receptacles, 
such as rain water tanks, cisterns, broken pots, bottles and old 
tins. On the other hand, Anopheles is entirei)’ absent in Barbados, 
although it is plentiful in the neighbouring islands and might 
easily be introduced from there. The argument advanced and now 
generally accepted is that Barbados is free from Anopheles on 
account of the breeding places likely to be frequented by it being 
inhabited by « millions ». Similar results have been observed in 
Egypt and Sierra Leone, and there is little doubt that, if pools and 
swamps in the tropics were abundantly supplied with small Fish 
with similar habits to «millions», Anopheles might be either got 
rid of altogether or their numbers greatly reduced. The Imperial 
Department of Agriculture in the West Indies has successfully 
introduced Girardinus pœciloides to Jamaica, St. Vincent, Anti¬ 
gua, St. Lucia and Guayaquil. It has also been taken to British 
Guiana, Colon and Bolivar. More recently through the Zoological 
Gardens in London similar Fish have been forwarded to India, 
Nigeria and other portions of the Old World tropics. Girardinus 
versicolor is said to be found in San Domingo and G . formosus in 
South Carolina and Florida. (Vol. 11, Hémoires, p. 171.) 
M. A. Andres (Bacos-Ramleh) attire l’attention sur le fait qu’en 
Égypte on place des Poissons, comme le Pavitalapis multicolor et 
autres, dans des petits bassins dans les jardins pour enrayer cette 
peste, et les résultats obtenus ont été très satisfaisants. 
MM. V. Vermorel (Villefranche) et le R. P. A. Renard 
( Liège) n'ont pas envoyé les travaux annoncés. 
M. J. M. Howlett (Pusa) demande à remettre sa communica¬ 
tion à une séance ultérieure, n'ayant pas encore reçu les planches, 
échantillons et matériaux destinés à compléter sa causerie. 
