295 



Mr. W. Wesche : Twelve exhibits in illustration of his paper 

 on ''Modifications of the Legs in some Dipterous Flies" (see 

 ante, p. 245). Species shown : Tachydromia arrogans, ^ ; Hyhos 

 femoratus, ^ ; Ascia podagrica, ^ ; C amjysicnemus curvipes, ^ ; 

 Platychirus cdbimanus, (^ ; Uydrotea dentijjes, (^ ; Sepsis 

 cynipsea^ cT ; Sphaerocera subsaltans, ? ; Limosina sylvatica, (^ ; 

 Tijnda oleracea, ^ \ Dolichopus griseipennis, ^ . ^Microscopes 

 lent by Messrs. Baker. 



February 7th, 1902. 



Mr. W. R. Traviss : Model of a church window in selenite, 

 containing upwards of eighty separate pieces. Made by Mr. J. 

 Swift more than forty years ago. Shown with polarised light. 



Mr. D. J. Scourfield : Limnosida frontosa. A very rare 

 Entomostracon from Finland. This species has so far only 

 been found in Norway, Sweden, and Finland. The projecting 

 eye and the notched posterior margin of the shell are very 

 characteristic. 



Mr. H. Morland : Triceratium rugosum Gr. & St., from the 

 Oamaru deposit, N.Z., showing " front " and " side " views of 

 valves, also difference in shape of the "upper" and "lower" 

 valves of frustule as observed by Herr Grunow, of Vienna. 



Mr. K. J. Marks : Protococcus viridis. Spherical, unicellular 

 plants, primarily filled with chlorophyll, which sometimes changes 

 to a reddish colour. Multiplication by repeated bi-partition of 

 the cells, as shown. Mounted in acetate of copper solution. 



Mr. J. B. Sc riven : Compound eye of Blow-Fly. True corneae 

 in front, shaped like watchglasses. The lens is situated at the 

 bottom of the pseudocone, which represents the aqueous chamber 

 in the higher animals. 



