PROCEEDINGS OF THE MIDLAND MALACOLOGICAL SOCIETY. 1 39 



By Mr. Overton : Plauorbis itinbilicattis and monstrosities, P. corncns, 

 Limnaca stagiialis, L. fcirgcr, and Bythinia tentaciilata, from the Derby canal ; 

 also Limnaca stagnalis from Sutton Coldfield. 



By Mr. Coilinge : Liinax iiyctcliiis, Bgt., from Washington, D.C., Otocoucha 

 ditiiidiata, Pfr., from North Island, New Zealand, and a small collection of 

 slugs from North America. 



38TH Meeting, November i5th, 1902. 



The Meeting was held at the President's house. 



The President in the chair. 



It was unanimously decided (i) to undertake the preparation of a Record 

 of the Molluscan Fauna of Warwickshire, a'ld that Mr. H. Overton be the 

 Recorder. Also (ii) the collection of statistics on the Early Colour Changes, 

 Protective and Mimetic Colouring of Molluscs, and that Mr. Walter E. Coilinge 

 be the Recorder. 



E.XHIBITS. 

 The President exhibited part of his collection of Slugs, and Land and 

 Freshwater Molluscs and Nudibranchs (in alcohol); the eggs of many species of 

 molluscs, and a series of monographs and memoirs upon the anatomy of the 

 Mollusca. 



CURRENT LITERATURE. 



Pilsbry, Henpy A.— Tryon's Manual of Conchology, ser. ii. Index volume, 

 pp. i— xcix ; vol. xv^pt. 57), pp. I— 48, pis. I— 15. Philadelphia: Academy 

 of Natural Sciences. 



The very useful Index volume contains a classification of the Bulimoid 

 molluscs described in volumes x — xiv of the "Manual." Dr. Pilsbry explains 

 that owing in part to the absence of anatomical data, and in part to the want of 

 sufticient knowledge to interpret the facts in his possession, a number of groups 

 belonging to the Helicidae were formerly referred to the BiiUmulidae or 

 " BuUmidae" by reason of the lengthened and Bulimoid contour of their shells. 

 Investigations however, made during the progress of the volumes on the Bulimi, 

 have shown the true relationships of several of these genera. We can 

 scarcely over-estimate the value of this epitome. 



Among a few of the changes we may cite the genus of Gonyostoiiiiis, Beck, 

 formerly considered a sub-genus of />////j;n///V/rt£; subordinate to Ann's. Anato- 

 mical research, however, shows that it has no relation to Aiiris or other 

 Bulimuline genera, but is a member of the Stropliocliiliiiae, and closely related to 

 Stropliocltediis. Thaiiiuastiis, Albers, formerly considered a sub-genus of 

 Stropliocliciliis, is shown to be more nearly related to Biiliiiiidiis, Ann's and 

 PIckocIieilns. Anatomical details are given of numerous other genera, and their 

 bearing upon the classification considered. 



In commencing volume xv we note a great improvement in the type, 

 which has been changed from Long Primer to Small Pica, and the quality of 

 the paper. White paper for the plates is still a desideratum. The volume 

 opens with a consideration of the genera Eitcalodiinn, Cr. and Fisch., Attisos- 

 ptra, Strebel, and Coelocciitnini, Cr. and Fisch. In the last mentioned genus a 



