EXPLANATION OF PLATE XXXIV. 



PAGE 



Fig. i. Fusus TOROSUS Ortm. ......... 223 



Patagonian beds ; mouth of Santa Cruz River. 



Front view, last whorl broken away. 

 Fig. 2. CHRYSODOMUS CANCELLATUS (Ortm.). ...... 209 



Patagonian beds ; mouth of Santa Cruz River. 

 2d. Front view of shell. 

 ib. Part of surface enlarged. 

 Fig. 3. CHRYSODOMUS PILSBRYI (Ortm.). . . . . .210 



Patagonian beds ; mouth of Santa Cruz River. 

 Front view of shell. 



Fig. 4. SlPHONALIA DOMEYKOANA (Phil.). ... . .211 



Patagonian beds ; mouth of Santa Cruz River. 



Front view of a large, complete individual. 



Fig. 5. SlPHONALIA NOACHINA (Sow.). ...... .213 



Patagonian beds ; Darwin Station, San Julian. 



Fragment of a very large individual, front view. 



Fig. 6. MUREX HATCHERI Ortm 214 



Patagonian beds ; Darwin Station, San Julian. 



Front view of shell. 

 Fig. 7. TROPHON PATAGONICUS (Sow.). . . . . . . . 215 



Patagonian beds. 



7. Large individual, somewhat damaged, corresponding closely 

 to the typical form, figured by Sowerby; Darwin Station, 

 San Julian. 



"]b. Individual of medium size, intermediate between the typical 

 form and v. Ihering's T. laciniatus santacruzensis. Oven 

 Point, San Julian. 

 "jc. Individual of medium size, approaching closely v. Ihering's 



T, laciniatus santacruzensis. Oven Point, San Julian. 

 jd. Fragment of young individual, showing distinct spiral sculp- 

 ture. Oven Point, San Julian. 



Fig. 8. TROPHON LACINIATUS Mart. 217 



Cape Fairweather beds ; Cape Fairweather. 

 8a. Front view of typical form. 



86. Front view of transitional form toward var. inornatus. 

 8<r. Front view of var. inornatus Plsb. 



Fig. 9. UROSALPINX ELEGANS Ortm. ... 219 



Patagonian beds ; mouth of Santa Cruz River, 250' above high tide. 

 Front view of shell. 



