412 J. W. Dawson—Paleozoic Land Snatis. 
shell is much more delicate than that of Pupa vetusta, and 
therefore less likely to be preserved. 
Fig. 12, Dawsonella Meeki, x8; 13, same, section of aperture, x16; the 
outer edge of the lamella is imperfect. 14, Markings of surface x 100: (a) Pupa 
vetusta ; (b) Pupa vetusta var. tenuistriata; (c) Pupa Vermilionensis ; (d) Zonites 
riscus ; 15, Strophites grandeva, natural size and magnified 8 diameters. gssegij 
With regard to its affinities, it was compared by Dr. Carpen- 
ter with the African species Paryphanta Caffra Fer., “on an 
extremely small scale.” Dr. Carpenter also compared it with 
Hygromia, and stated that it might well be rank under! Pseu- 
