98 N'o/es and Comments. 



INTERESTING NORTHERN SHELLS (Plate I.). 

 The figures on the plate, for which we are indebted to the 

 pubUshers, have been selected at random, and all are connected 

 with the district covered by this magazine. They will convey 

 a far better idea of the nature of the illustrations than any 

 words of ours, and they also indicate the variety of subjects 

 dealt with. Figs. 1-4, dorsal and side views of two examples 

 of Planorbis carinatus Miill, showing the grotesque and irregular 

 coiling due to abnormal conditions ; collected in Leventhorpe 

 Pastures, Leeds ; Fig. 5, Planorbis spirorbis monst. prisciint 

 from Gorton, near Manchester; Fig. 6, an example of a gib- 

 bously inflated univalve {Lunncea auricularia var. gibbosd) from 

 Moortown, Leeds ; Fig. 7, Limncea palustris var. lacmiosa from 

 Leeds ; Fig. 8, L. peregra, showing three distinct and separate 

 peristomes, from Allerton-Bywater ; Fig. 9, L. peregra, showing 

 parallel linear markings, probably due to injury, from Penistone ; 

 Fig. ID, L. peregra var. labiosa, with reflected lip, from Hud- 

 dersfield ; Fig. 11, an example of L. stagnalis with gibbously 

 inflated body whorl, from Osmondthorpe, Leeds ; Fig. 12, 

 L. s/agnalis, showing by the irregular growth the baneful 

 influence of chemical refuse discharged into the lake, from near 

 Prestwich, Lancashire ; Fig. 13, an example of a concentric 

 operculum [Vivipai'a contecta), from Southport ; Fig. 14, Helix 

 nemoralis var. coiiica, from Seacroft, near Leeds; Fig. 15, H. 

 cantiana var. albocincta, showing supposed atavistic evidence of 

 spiral banding, from near Osgodby ; Fig. 16, variety of H. 

 nemoralis from Spurn ; Fig. 17, H. aculeata, showing- corona of 

 spines, from Bassenthwaite ; Fig. 18, Unio tnmidiis Phil., show- 

 ing the dwarfing and distortion of the shell owing to proximity 

 to the dam, from Yearsley Lock, near York ; Fig. 19, Pupa 

 secale var. edentula from Ingleton ; Fig. 20, Azeca tridens, 

 showing the inflexible calcareous lamella, assumed to represent 

 the Clausium, from Roundhay, near Leeds; and Fig. 21, 

 Pisidium henslowannm, showing endogastric direction of the 

 umbones, from Cockerton, Darlington. 



RELICS OF THE STONE AGE. 

 Mr. C. H. Read, F.S.A., Keeper of the Department of British 

 and Mediaeval Antiquities in the British Museum, has issued an 

 admirable ' Guide to the Antiquities of the Stone Age.' This 

 will be most useful to those interested in the early history of 

 Britain, and the value of the Guide is considerably increased by 

 the ten plates and 142 illustrations in the text, which illustrate 



Naturalist, 



