THE NAUTILUS. 101 



aperture is very narrowly coherent Avith the penultimate whorl, and 

 the aperture is circular, almost continuous, with a strongly thick- 

 ened li}). The first whorls are remarkably small, the last grows 

 rapidly in width and is more predominating than in the other forms. 

 The spire is flat, but the whorls are well rounded above and the 

 suture is very deep. 



4. In a lot of minute shells, kindly sent for inspection a few 

 days ago by Mrs. Judge Geo. Andrews, collected in damp moss on 

 rocks at the Cliffs on Holston river, near Knoxville, Tennessee, 

 there were a few specimens of a form nearly related to the preced- 

 ing, and of the same size, yet with peculiar characters: the umbili- 

 cus is very wide, the " ribs " less strong, the last whorl compara- 

 tively narrower, widening more gradually ; the peristome is con- 

 tinuous, somewhat " free " and the margin only slightly expanded, 

 thin with no lip-thickening. 



5. l\[r. Theo D. A. Cockerell sent me two specimens of F. 

 cydopliorella Ancey, from West Clifl*, Colorado. They are of about 

 the size of a typical eostata, densely rib-striate, the spire is higher 

 umbilicus a trifle narrower, the whole shell more compact in its 

 appearance. The whorls are more slowly and regularly increasing, 

 such as it is in pulchella, and the peristome is only slightly " reflected ;" 

 thin without a thickened lip. 



Whether, and in how far, these forms are to be regarded as distinct 

 species, or partly rather as well marked varieties, will and can be 

 decided only after careful comjmrison of much more extensive 

 material from different parts of the country. The soft parts also 

 will have to be examined. 



New Philadelphia, Ohio, Dec, 1891. 



UMAX AGRESTIS LINN. IN CALIFORNIA. 



BY W. J. RAYMOND. 



In the Nautilus for October and December are notes concerning 

 the earliest recorded appearance of this slug on the Pacific Coast, 

 from which it appears that Rev. G. W. Taylor first observed it 

 about seven years ago in Victoria, and recorded its presence there, 



1 Containing also, Pupa contrada, curvidetis, and Verl. BoUesiana. 



