1899.] NATURAL SCIENCES OF PHILADELPHIA. 177 



terosato, 1869 — Relations doubtful. In its peculiar thickened 



base, it resembles Centhium turrita Stearns. 

 Chemnitzia erythrosclera Morch, 1875, and Chemniizia Krebsii 



Morch, 1875 — Relations doubtful. Nuclei not described. 

 Chemniizia Icevigata d'Orbigny, 1853 — True Odostomia. 

 Cheinnitzia simplex d'Orbigny, 1853 — not Odostomia simplex 



Angas, 1871 — EiilimeUa. 

 Chemnitzia spiraia Kurtz and Stimpson, 1851 — not Odostomia 



spirata A. Adams, 1860 — Finely striated Odostomia {Auricu- 



Una or Ondina). 

 Chemnitzia turritella'Ph. (Morch, 1875.) — Relations Doubtful. 



EXPLANATION OF PLATE VIII. 



The figures are c^mera-lucida drawings by Mr. A. H. Verrill. 

 Fig. 1. Turbonilla pyrrha Bush, p. 160— Type (No. 72,050); 6 



mm. long X 1| mm. diameter. 

 Fig. 2. Turbonilla texlills l^\xviz (f), p. 154 — Specimen (No. 72,- 



051); 4 mm. X 1^ mm. 

 Fig. 3. Turbonilla Hemphiili Bush, p. 169— Type (No. 79,- 



013); 5|mm. X 1| mm. 

 Fig. 4. 2Vr6om7/a airupto Bush, p. 168— Type (No. 79,012); 



4 mm. X 1 mm. 

 Fig. 5. Turbonilla pupoides d'Orbigny, var. McAna Bush, p. 153 



—Type (No. 79,014) ; 3f mm. X 1 mm. 

 Fig. 6. Turbonilla unilirata Bush, p. 165— Type (No. 79,010) ; 



3 mm. X 4 mm. 

 Fig. 7. Turbonilla Stimpsoni Bush, p. 156— Type (No. 72,042) ; 



5|^ X about 1 mm. 

 Fig. 8. Turbonilld Dalli Bush, p. 169— Type (No. 72,049) ; 8 



mm. X 2| ram. 

 Fig. 9. Turbonilla Pilsbryi Bush, p. 151— Type (No. 72,095) 



4^ mm. X 1|- mm. 

 Fig. 10. Turbonilla Conradi Bush, p. 159— Type (No. 72,052) 



8f mm. X 2 mm. 

 Fig. 11. Turbonilla Rushii Bush, p. 160— Type (No. 70,535) 



9^ mm. X 2f mm. 

 Fig. 12. Turbonilla incisaBMsh,^. 156— Type (No. 62,800); 6| 



mm. X 1^ mm. 

 Fig. 13. Turbonilla Heilprini Bush, p. 167— Type (No. 79,009); 



2^ mm. X mm. 

 Fig. 14. Turbonilla Penistoni, Bush, p. 165— Type (No. 70,024); 



4^ mm. X 1 mm. 



12 , 



