DALL, TERTIARY MOLLUSKS OF FLORIDA, PART I. 



PLATE XII. 



Fig. I. Siroinbus Aldrichi T>a\\ ; 62.0; p. 175. 



Fig. 2. Siroinbus albirupianus Dall ; from a gutta-percha cast taken from the mold, 

 fig. 10 ; 55.0 ; p. 174. 



Fig. 3. Anachis camax Dall ; 14.0 ; p. 136. 



Fig. 4. Strombus Aldrichi; from behind ; 62.0 ; p. 175. 



Fig. 5. Young shell of Orthanlax Gabbi Dall, showing gradual increase of the en- 

 veloping whorl; 37.0; p. 170. 



Figs. 5 a, 5 b. Orlhaulax Gabbi, front and side view of adolescent specimen ; 68.0 ; p. 171. 



Fig. 6. Anachis ithitoma Dall ; 4.5 ; p. 136. 



Fig. 7. Typhis lingidferus Dall ; 15.0; p. 152. 



Fig. 8. Pterorhytis Conradi Da\l ; summit; 26.0; p. 143. 



Fig. 9. Eupleura miocenica Dall ; 29.0 ; p. 146. 



Fig. 10. Natural mold o{ Strombus albirupianus, from which the cast (fig. 2) was taken 

 after removing the core here shown ; Ion. of mold 55.0 ; p. 174. 



Fig. II. Pterorhytis Conradi Dall; 35.0; p. 143. 



Fig. 12. Murex micromeris Dall ; 7.5 ; p. 141. 



190 



