224 Annals of the Carnegie Museum. 



Plate LIV. 



1. Trochonema hudsoni Raymond. A cast, partially buried in the matrix. Twice 

 natural size. Valcour Island, New York. 



2. The same species. The body whorl of a testiferous specimen from Chazy, New 

 York. Twice natural size. 



3. The same species. Another cast from Valcour Island. Twice natural size. 



4. Gyronema rotalineum Raymond. A cast from Valcour Island, New York. 

 Twice natural size. 



5. Gyronema historicum (Hudson). A specimen from Plattsburgh, New York. 

 Type of Cyclonema ? normalianum Raymond. Twice natural size. 



6. The same species. A figure of the type, after Hudson. Four times natural 

 size. 



7. Holopea scrutator Raymond. A cast from Valcour Island, New York. The 

 inner lip is obscured by matrix. Twice natural size. 



8. The same species. Top view of a specimen retaining a part of the shell. Val- 

 cour Island, New York. Twice natural size. 



9. Holopea ? plauta Raymond. A specimen from Chazy, New York. Twice 

 natural size. 



10. Palceacmcea irregularis Raymond. A small specimen from Chazy, New York. 

 Four times natural size. 



11. The same species. A larger specimen, showing a trace of the suture. Twice 

 natural size. Chazy, New York. 



12. The same species. A specimen with broken apex. Natural size. Chazy, 

 New York. 



13. Subulites prolongatus Raymond. Valcour Island, New York. Twice natural 

 size. 



14. 15. Cyrtospira raymondi (Hudson). Two views of the type. After Hudson. 

 Four times natural size. 



16. Clisospira bassleri Raymond. Side view of a specimen from Isle La Motte, 

 Vermont. Twice natural size. 



17. The same species. Apical view of the same specimen shown in figure 16. 

 Four times natural size. 



18. Conularia triangularis Raymond. The type, and diagram of section. Val- 

 cour Island, New York. Twice natural size. 



Plate LV. 



1. Scenella montrealensis (Billings). A specimen from Isle La Motte, Vermont, 

 showing surface markings. Twice natural size. 



2. Lophospira aspera (Billings). One of the types, from the Mingan Islands, 

 Canada. Natural size. 



3. Lophospira seelyi Raymond. A specimen from Isle La Motte, Vermont. Twice 

 natural size. 



4. Hormotoma infrequens (Billings). The typical specimen, on a piece of the 

 matrix. Natural size. 



5. 6, 7. Raphistoma stamineum Hall. Side and bottom views of a specimen from 

 Isle La Motte, to show form of lips and surface markings of an adult. Natural size. 



