106 THE NAUTILUS. 



descriptions and figures of Tryon l more closely than to any other, 

 both in size (11-13 mill, long) and form. The collumella is pre- 

 cisely as described by Tryon. It is probable that many of the west- 

 ern Pliysas have a wide distribution west of the Rocky Mountains. 



Planorbis antrosus Conrad. A single specimen of this species was 

 picked up on the shore of Pend Oreille River, in front of the fish- 

 hatching building, across the river from Sandpoint. It is exactly 

 like the variety portagensis Baker, from Maine. Though the two 

 localities are separated by 2500 miles of territory, there is no question 

 concerning the identity of the Idaho shell. Only three other records 

 of bicarinatus (antrosus') are known from Idaho, and these are all 

 from the " panhandle," not far removed from the locality under 

 consideration. 2 



At Glacier National Park, Montana, in a ravine about a mile 

 west of the hotel, a number of dead shells of Oreohelix cooperi 

 (W. G. B.) were secured. No living specimens could be found, 

 though special search was carried on for them. Glacier Park 

 Station is about 5000 feet altitude. 



PUBLICATIONS RECEIVED. 



DESCRIPTION OF SOME NEW CERIONID^E, by C. J. Maynard 

 (Appendix to Records of Walks and Talks with Nature, Vol. v, pp. 

 177-200, 1913). The object of this notice is to call the attention of 

 conchologists to this somewhat obscure publication, containing over 

 thirty-five so-called new species. The author states in the introduc- 

 tion that " The following announcements of the discovery of certain 

 laws which govern the evolution of groups and the descriptions of 

 some species are here given preliminary to a revision of my mono- 

 graph of the Cerionidce.''' The author's brevity in describing species 

 and his combinations of hyphenated names are something remarkable. 

 The latter method is evidently necessary to emphasize his belief that 

 " a species mav become established even though it is still bound to 

 its parent species by living links." Having made no special study 

 of this interesting family, it would be useless for me to comment fur- 

 ther, for in doing so I might seriously encroach upon the vocabulary 



1 See Tryon, con. Haldeman's Mon., p. 134, pi. 6, fig. 15. 

 2 See Walker, NAUTILUS, XXIII, p. 25, 1909. 



