PATAGONIAN EXPEDITIONS : PALAEONTOLOGY. 
PAGE 
Fig. io. Urosalpinx cossmanni Ortm. . . . . . . . 219 
Patagonian beds ; mouth of Santa Cruz River. 
10 a. Back view of shell. 
10 b. The same, 2/1. 
10c. View of mouth of another specimen, 2/1. 
Fig. 11. Urosalpinx pyriformis (v. Ih.). ... .... 220 
Patagonian beds ; Lake Pueyrredon, base. 
Back view of shell. 
All of the figures, unless otherwise stated, are natural size. 
(vol. iv) 
