223 



microscope before him was very heavy and could not well be 

 considered a portable instrument. 



The thanks of the meeting were unanimously voted to Mr. 

 Angus for his exhibit. 



A paper on "A Water-mite New to Britain Neumania 

 triangularis, Piersig," contributed by Mr. George Plant Deeley, 

 was read by the Hon. Secretary. This genus was formerly called 

 Cochleophorus, and several species are described under this generic 

 name by Mr. C. D. Soar in Science Gossip, June 1900. The 

 locality from which Mr. Deeley obtained his specimens was 

 Parkhill, Stourbridge. Both sexes were found. 



Mr. C. D. Soar said that this mite had long been known in 

 Germany, though it had not previously been found here. He was 

 glad to know that Mr. Deeley had added a new one to the British 

 list. 



Mr. T. B. Rosseter, F.R.M.S., contributed a paper on " A New 

 Species of Avian Tape-worm Hymeyiolepis upsilo7ij" which in the 

 absence of the author was taken as read. 



The thanks of the meeting were unanimously voted to Mr. 

 Rosseter for his communication. 



Mr. James Burton read a paper, illustrated with blackboard 

 drawings, on Botrydium granulatum. The author said that early 

 in October he came across this little plant in immense numbers at 

 the Welsh Harp reservoir, Hendon. The water had been partially 

 drained away. On the right-hand side of the road going from 

 Cricklewood there is normally a considerable body of water, which 

 reaches from the road under the Midland Railway viaduct and 

 some distance beyond. This space was quite drained except for 

 the narrow stream of the Brent running through it. On the left 

 of the road there was also a large space of partially dried mud. 

 All this area, which must amount to many acres, was a distinctly 

 bright green colour. Investigation showed this to be due to the 

 little Botrydium. Mr. Burton said he had looked for it without 

 success for many years, and during the last two seasons, on the 

 Club excursions, had been careful to search in the most likely 

 places, but had never found it. It is, however, well known that 

 when it does appear there is almost always, as in this case, a very 

 large production, and the available area becomes thickly covered. 

 The plant consists of small green balloon-shaped vesicles of various 

 sizes, from quite small up to about 3 mm. in diameter, so it is- 



