234 BuivLETIN 31 334 



PLATE 33 



Figure ^^ ^ Page 



1-5. Crassatellites trapaquat^ Harris 96 



Fig- ^> 55 mm., type ; Smithville, Tex. 



2, 55 " Smithville ; view from above, showing lunule 

 and escutcheon. 



3, type, and a larger Lisbon specimen (65 mm.) 



4, 13.5 mm., young, interior. Smithville. 



5, 13 " young, exterior. " 



6-8. Crassatellites negreetensis, n. sp 97 



Two hundred yds. below mouth of Negreet Bayou, Sabine R., La. 

 Fig. 6, II mm., young. 



7, 13 " " 



8, 40 " adult. 



