PLATE XLI. 



Fig. I. Scala (Sthenorhytis) Mazyckii Dall, basal view ; Miocene of Cainhoy, South 



Carolina; diam. 28 mm. See The Nautilus, vol. ix., p. in, February, 1896. 

 Fig. 2. The same, front view. 

 Fig. 3. Ancillaria chipolana Dall; Oligocene marl of the Chipola River, Florida; alt. 



25 mm. 



Fig. 4. Pleurotoma boadicea Dall ; Oligocene sands of Oak Grove, Florida ; alt. 25 mm. 

 Fig. 5. Chama Willcoxi Dall, interior of attached valve ; Pliocene of Shell Creek. 



Florida ; Ion. 85 mm. 



Fig. 6. The same, with both valves in place. 

 Fig. 7. The same, interior of upper valve ; Ion. 85 mm. 

 Fig. 8. Scala ranellina Dall, basal view; Eocene of the Zeuglodon bed (Jacksonian), 



near Cocoa P. O., Alabama; diam. 23 mm. See The Nautilus, vol. ix., 



p. in, February, 1896. 



Fig. 9. The same, front view; alt. (decollated) 33 mm. 



Fig. 10. Astyris perfervida Dall; Oligocene sands of Oak Grove, Florida; alt. 18 mm. 

 Fig. ii. Terebra psilis Dall; Oligocene sands of Oak Grove, Florida; alt. 16.5 mm. 



UNIVERSITY ) 



1197 



