THE NAUTILUS. 71 



NOTES. 



POPULAR CONCHOLOGY Karl Soffel, of Paris, the well-known 

 naturalist, has discovered that snails snore. He was experimenting 

 with several specimens, which he had placed in a glass jar in his 

 library, and one evening while writing he noticed a peculiar noise 

 issuing therefrom. It sounded like a person snoring in the next 

 room. M. Soffel approached and found that the snails were sleeping 

 soundly and snoring peacefully, the loudest snorer of them all being 

 the one that had lived among grape vines. NEAT YORK AMERICAN. 



PUBLICATION RECEIVED. 



THE TERTIARY AND QUARTERNARY PECTENS OF CALIFORNIA. 

 By Ralph Arnold. (U. S. Geol. Survey, Professional paper No. 

 47, Series C., Syst. Geol. and Paleont., 76 Pp. 264, plates LIU ; 

 plate I, a sketch map of California). Students of West American 

 Mollusks are greatly indebted to Dr. Ralph Arnold for his mono- 

 graph on this subject. In the introduction he says, of the first part, 

 it " Is a brief outline of the different Tertiary and Pleistocene for- 

 mations of California, giving the type localities, where, when and 

 by whom first described, their salient characters, where they and 

 their supposed equivalents are known to occur, the species of Pecten 

 found in them and their typical fauna as far as known." These 

 faunal lists will be very useful to students. The second part of the 

 work describes and illustrates the Tertiary, Pleistocene, and recent 

 Pectens, from Alaska to the Gulf of California, including the latter. 

 The classification follows Dr. Dall's " Tertiary Fauna of Florida." 



The number of Pectens listed for California is 93, of these fifty 

 species and varieties are described as new. 



The well-known form of Pecten ezquisulcatus Cpr. is figured as a 

 variety of Pecten circularis Sowerby, instead of P. ventricosus Sby. 

 Pecten hindsii Cpr. is listed as a var. of Pecten hastatus Cpr. rather 

 than hericeus, as lately listed, the latter now ranking as a variety 

 also of hastatus. Dr. Arnold writes the name as hericius Gould 

 rather than the better known form " hericeus." Dr. Dall's Ms. 

 name of Pecten (C.) hericius var. albidus and P. (Pseudamusium^) 

 randolphi Dall, var. tillamookensis, are two new varietal names of 

 Pectens known only among recent forms. 



