THE NAUTILUS. 35 



Length of type 27, width 13 mm. 



Type is in the Oldroyd collection, Stanford University. 



T. S. OLDROYD. 



PRESSODONTA redwiva. In some notes on the Uni&nicUe re- 

 cently published (Occ. Papers, Mus. Zool., Univ. Mich., 49, 

 1918, p. 2) I proposed to replace Pressodonta Simp. (1900) by 

 Calceola Sw. (1840) on the ground of priority, both groups 

 having the same type. Dr. Dall has since called my attention 

 to the fact that "Calceola was used by Lamarck in 1799 for 

 a coral (long supposed to be a Brachiopod)." Thia restores 

 Pressodonta to its place as the proper name for the subgenus. 

 The error is one of the unfortunate results of not having 

 access to a general scientific library. BRYANT WALKER. 



Mr. Horace F. Carpenter has presented to the City of 

 Providence and has installed in the museum at Boger Wil- 

 liams Park his entire collection of minerals and shells. It 

 consists of about 4,000 species of shells, 75,000 specimens, 

 1,200 species and varieties of minerals, over 200 rare chem- 

 ical salts, and 50 wooden models of mineral crystals. A 

 microscope with accessories for conchological and mineralog- 

 ical work, and a library of about 200 volumes on natural his- 

 tory and chemistry, worth about $1,500. This collection 

 represents a life labor of 60 years. Mr. Carpenter has spent 

 nearly a year in installing, arranging and labeling these 

 specimens at the museum. 



PUBLICATIONS RECEIVED. 



NOTES ON WEST AMERICAN CHITONS, I. By S. Stillman 

 Berry. Proc. Calif. Acad. Sci., 4 ser., vol. vii, pp. 229-248., 

 Sept. 1917 (received May 17, 1918). These interesting notes 

 are based on a large and valuable collection made by Mr. 

 George Willett in southern Alaska, comprising 25 species and 

 622 specimens. Two new species, Ischnochiton (Lepidozona) 

 willetti and Placiphorella rufa, are described and figured, 

 followed by a note on the genus Trachydermon. 



