540 PROCEEDINGS OF THE 



of Lake Albert Nyanza. The other, V. Rousseleti (named in 

 honour of its discoverer), was obtained by Mr. C. F. Rousselet on 

 the occasion of the visit of the British Association to South Africa 

 in 1905, from a pool formed by the Gwaai River, near the railway- 

 station. In both cases only asexual vegetative individuals were 

 acquired, with the result that a complete description could not be 

 given, in 1913 Mr. Rousselet received from Dr. Jakubski, of 

 the Zoological Institute of Lemberg University, some tubes con- 

 taining plankton material collected in German East Africa. In 

 two of these tubes, among other objects, Mr. Rousselet was 

 surprised to come across numerous colonies of Vol vox, which he 

 at once recognised as the same two species already described by 

 Prof. West. Fortunately, in this case, both species were present 

 in their various sexual stages, with androgonidia and oospores, as 

 well as the vegetative colonies. It will, therefore, now be possible 

 to complete the description of both species. A tragic note is 

 given to the episode by the fact that Mr. Rousselet returned, as 

 requested, the tubes and specimens to Prof. Jakubski at Lemberg 

 early in July; but owing to the war and the occupation of 

 Lemberg by the Russian Army soon after they should have 

 arrived, he has not been able to ascertain whether they safely 

 reached their destination, or what has become of them, or of the 

 correspondent to whom they were addressed. A vote of thanks 

 to Mr. Rousselet for his interesting communication was carried 

 by acclamation. 



Mr. W. E. Watson Baker exhibited under a microscope a 

 mounted specimen of the egg of the Anopheles mosquito and a 

 very young larva of the same. The organism is rarely found in 

 these conditions ; but the Secretary mentioned that on two 

 occasions last year, at excursions of the Club, he had obtained 

 specimens of nearly mature larvae. In one of the instances he 

 had been able to feed the creature they devour some of the 

 smaller algae till it pupated, and finally the perfect insect 

 emerged. The meeting thanked Mr. Watson Baker for his 

 beautiful exhibit. 



At the 502nd Ordinary Meeting of the Club, held on November 

 24th, the President, Prof. Arthur Dendy, D.Sc, F.R.S., in the 

 chair, the minutes of the meeting held on October 27th were 

 read and confirmed. 



