THE NAUTILUS. 127 



Type locality : Near San Francisco, California. 



Range: California, near San Francisco (W. A. Nason); San Joa- 

 quin River (Mrs. E. E. Bush, Phil. Acad.); Merced Lake (Stearns, 

 Dall, Smithsonian Institution); between Animas and La Plata, 

 Colorado (Ingersoll). 



Remarks : L. leaii seems to be a very distinct species, easily recog- 

 nized by its short spire, very large aperture and heavy columellar 

 plait. It is more nearly related to L. proxima rowellii Tryon than 

 to any other species, but seems to be distinct. It has probably been 

 heretofore identified as a form of the protean species palustris, but it 

 is unquestionably distinct from any form of that species. It also re- 

 sembles L. reflexa hemphilliana Baker, but differs in being very much 

 broader and has a differently shaped and larger aperture. It is 

 named in honor of one of America's best known conchologists, Dr. 

 Isaac Lea. 



THREE NEW SPECIES OF SCALA FROM CALIFORNIA. 



BY WILLIAM HEALET DALL. 



During the last year or two, among the minute shells, collected by 

 various correspondents on the Californian coast, there have been 

 several undescribed forms of Scala, descriptions of which follow. 

 Scala berryi n. sp. 



Shell small, white, six-whorled : nuclear whorls polished, smooth, 

 without varices ; later whorlo with rather strong, reflected, faintly 

 axially striated varices, on the last whorl about 20 or 21 in number; 

 these varices are quite close-set, not angulated in front of the suture 

 and markedly reflected, with the interspaces smooth ; base with no 

 basal disk or cord, the coil imperforate, the peristome rather callous 

 on the pillar side. Long. 3.5., max. diam. 1.75 mm. 



Dredged in 200 fathoms, San Pedro Bay, Cala., Mrs. Oldroyd ; 

 and in 12 fathoms off Del Monte, Monterey Bay by S. S. Berry. 

 U. S. Nat. Mus. 107,724. 



This species is, perhaps, nearest to S. clathratula A. Adams, and 

 to the next species. 

 Scala rectilaminata n. sp. 



Shell very similar to S. berryi, with the same number of whorls 

 and varices, but having the nuclear shell smaller, the test less heavy, 



