569 



Mr. W. Wesclie : A flea, Ceratosyllus juhatus S, parasitic on 

 bat. Mounted, without pressure, on cover-glass to show both 

 sides. The antennae, which in the Pulicidae are usually in 

 cavities, are well shown. 



Mr. A. L. Still : A gymnoblastic hydroid, Coryne fruticosa. 

 Stained with carmine. 



Mr. J. Dick : Arachnoidiscus ornatus, in situ, on coralline 

 from Mauritius. 



Mr. A. Earland : Typical foraminifera from S.W. Ireland. 

 Dredged in forty fathoms. 



April 17th, 1903. 



Mr. W. H. Harris : Six slides of the Drone-Fly, Eristalis tenax, 

 showing: (1) External view of anterior thoracic spiracle; (2) 

 internal view of posterior thoracic spiracle, with the folded 

 membrane (the musical organ) in its natural position ; (3) the 

 musical organ, with the folded membrane, the chitinous rods, and 

 the arborescent appendages ; (4) expanded and contracted con- 

 ditions of portions of the membrane which closes the air 

 chamber internally ; (5) portions of alulets, or scales, with two 

 kinds of appendages ; (6) the plume, or auxiliary organ. 



Mr. C. r. Kousselet : As'plcmchna brightivellii, with a parasitic 

 fungus growing in the body cavity. 



Mr. K. I. Marks : Floscularia cornuta Dobie, c^ and 5 , with 

 Oecistes intevniedius Davis on the same weed in large numbers ; 

 from Willesden Green. 



Mr. T. N. Cox : Section of a coal plant. Part of a large 

 Lepidodendro7i, an extinct genus of Lycopodiaceae containing 

 about forty species. 



Mr. J. T, Holder : Transverse section of finger of human 

 foetus (about seven months), showing nail, etc. 



Mr. A. E. Hilton : Third leg of Hairy Bee, Dasypoda Mrtipes. 

 Mounted in glycerine. 



May 1st, 1903. 



Mr. W. H. Langton : Head and proboscis of Five-spotted 

 Burnet Moth, showing the large compound eyes and the junction 

 of the two halves of haustellum, or proboscis, at the point of 

 connection with the head. 



