CURRENT LITERATURE. 



It is hoped that all Malacologists will aid in making this Biblio- 

 graphy as complete and useful as possible. Writers, both at home and 

 abroad, are especially asked to send in copies of their respective papers 

 for review to Wilfred Mark W^ebb, Holmesdale, Brentwood, to whom 

 all communications should be addressed. 



MALACOLOGY IN GENERAL. 



Taylor, J. W., with the assistance of Roebuck, W. D., and Ashford, Chas. 

 — "A monograph of the land and fresh-water mollusca of the British 

 Isles." Part II., Leeds, August 24th, 1S95, PP- 65-128, pi. ii., 147 figs. 



Mr. John W. Taylor is again to be congratulated on the result of the 

 careful and really hard work which is to be seen in the second part of his 

 monograph on British land and fresh-water shells, and when one begins to 

 realize what such a labour must be, where the author is also the illustrator, 

 one feels that one's time might, perhaps, be better spent in praising the many 

 perfections than in pointing out the few faults. The present part is creditably 

 printed and excellently illustrated, while the thoroughness of treatment and 

 general clearness of style which contributed, in no small way, to the success 

 of Part I., are very well kept up. The introduction of thicker paper for the 

 plate is a decided improvement, and with the plate itself, as a whole, it would 

 be very difficult to find any fault, so well have the tints and shading of the 

 shells been reproduced by the artist and lithographers. It is also pleasant to 

 see that the colour-printing has not been done "in Germany." 



Figure 151. Linmatea stagiialis. Figure 152. llt-lix nemoralh. 



Showing transverse thickenings indicating growth checlvs sustained by 

 the animal. 



In the instalment under consideration, Mr. Taylor completes his account 

 of variation in form, and proceeds to discuss variations of the shell in the 

 character of the lip, in the armature of aperture, sculpture, periostracal 

 appendages, and further difierences in thickness, in form and in colour. 

 Monstrosities of the shell and hyperstrophy are then considered, and finally 

 " auxiliary organs" — viz., operculum aud clausilium — are described. 



It is to be expected that the introduction of varietal appellations which 

 have been applied from time to time to casual variations will not find favour 

 in the eyes of the present writer, who has always considered the retention of 



