294 



Mr. H. F. Angus : Five exhibits to illustrate the determination 

 of the aperture of dry lenses by means of (1) a protractor, and 

 (2) a millimetre scale in the stop carrier of Abbe condenser, also 

 the useful application of the results obtained for the production 

 of the best possible dark ground illumination. (See ante, p. 209.) 



Mr. W. Wesche : Mouth parts of Hilara matrona ("fisherman's 

 curse"), a predaceous fly of the Empidae family (Diptera). 



January 3rd, 1902. 



Mr. K. J. Marks : Brachionus quadratics, Rousselet. The 

 lorica is covered with polygonal areolations. The foot is re- 

 markable, having the false joints of a Noteus and the 

 transverse wrinkled structure of a Brachionus. The toes are 

 unusually long and retractile, like a Philodina. 



Mr. T. G. Kingsford : Section through external ear of Cat, 

 showing cartilage, fibrous tissue, and hair follicles. 



Mr. W. Wesche : Notholca longispina, $ with egg, from Leg of 

 Mutton Pond, Hampstead Heath. 



Mr. A. Downs : Synura uvella. Spheroidal colony, composed of 

 flagellate animalcules. No pigment specks are present in this 

 variety. From a pond near Bath, beneath the ice. 



Mr. L. 0. Grocock : Transverse section through thallus of 

 lichen, showing the algal " gonids " and fungal hyphae. 



Mr. W. J. Winter : A mounted specimen of the Rotifer Notops 

 brachionus. 



Mr. H. Morland : Triceratia from Oamaru. Showing various 

 forms of Triceratlum, which are very frequeat in this deposit. 



Mr. J. B. Scriven : Sensory nerve in the sheath of the proboscis 

 of Tipida. It partly encircles the sheath and supplies one large 

 hair and many small ones. 



January 17th, 1902. 



Mr. H. Taverner : A new Water Mite, Ecpolus papillosus. 

 Described by Mr. Soar. Found in the New River. (See ante^ 

 p. 251). 



