60 



THE NAUTILUS. 



tually become necessary with the progress of science. A few 

 corrections have been made in generic nomenclature. We 

 note that the new name Cristidens was misspelled in the 

 heading on p. 1154. The synonymy is given in full, and 

 keys have been made to the species of many genera. The 

 index contains about 7600 entries. 



The Descriptive Catalogue gives students access to descrip- 

 tions of all the species, which otherwise could be had only in 

 a large library, which would take years to accumulate; and 

 it also contains the full exposition of the principles of 

 Simpson's classification which has revolutionized the study 

 of Naiads. It should certainly be in the hands of all inter- 

 ested in fresh-water mussels. 



The division of the book into three parts, each with title- 

 page, was an excellent idea, since each makes a volume of 

 about 500 pages. 



ILLUSTRATIONS OF A THOUSAND SHELLS. By Y. Hirase, 

 Kyoto, Japan. Part One of this exceedingly interesting pub- 

 lication has been received. It contains 95 beautifully colored 

 figures, arranged in Japanese style on twenty double folding 

 plates. The coloring and drawings are as a whole remark- 

 ably good ; many of the more recently described species, such 

 as Cyclophorus hirasei Pils., Ornithochiton hirasei Pils., 

 Chlamys hirasei Bavay and the rare and beautiful Pleuro- 

 tomaria hirasei Pils. are figured. It forms a unique con- 

 chological work. C. W. J. 



NOTE. 



In a recent number of the Bulletin du Museum National 

 d'Histoire Naturelle (1913, p. 476) M. Germain proposes the 

 new subgenus Pseudoclavator for Bulimus favannei Brug., 

 Clavator heimburgi Kob. and Bui. crassilabris Gray. He 

 omits B. procteri Sowerby, which belongs to the same group, 

 and does not explain why the name Leucotcunius is not avail- 

 able for the same series of species, B. favannei being its 

 type. H. A. P. 



