1921] NATURAL SCIENCES OF PHILADELPHIA. 391 



London, 1873, p. 720). I am info'-med by F. Martin Duncan, Li- 

 brarian of the Zoological Society, that the number of the Proceedings 

 containing this page was published about March, 1874. It was 

 therefore later than Gabb's species. Sowerby's P. canaliculata 

 may be called Pyramidella insularum. 



Pyramidella fonilata famelica Pils. and Johns. Plate XXXV, fig. 13. 



Proc. A. N. S. Phila., 1917, p. 174. 



Type no. 4079 A. N. S. P. This is probably P. olssoni Maury. 



Turbonilla (Careliopsis) turritelloides Gabb. Plate XXXVI, fig. 1. 



Turhonilla turritelloides Gabb, Trans. Amer. Philos. Soc, xv, 1873, p. 226. 



The nucleus is helicoid, spire rather low, of about 2| whorls, early 

 post-nuclear whorls convex, becoming flattened in the lower two- 

 thirds. There are faint traces of vertical ribs and numerous, un- 

 equal spiral striations. 



Length 6.5, diam. 1.2 mm.; 14 post-nuclear whorls. 



Type no. 3029 A. N. S. P. Numerous other specimens. 



Turbonilla (Pyrgiscus) dominicensis Gabb. Plate XXXVI, fig. 3. 



Turhonilla dominicensis Gabb, Trans. Amer. Philos. Soc, xv, 1873, p. 225. 



The nucleus is small, helicoid, subsequent whorls sculptured with 

 strong, straight rounded ribs, which are very slightly protractive on 

 the upper part, changing to slightly retractive in the last three whorls. 

 On the penult whorl there are 20 ribs. On the last whorl the ribs 

 gradually disappear just below the periphery. Spiral sculpture of 

 weak, unequal striae, not visible on the summits of the ribs; the 

 base is convex, with more regular spiral striae. The whorls are 

 somewhat convex throughout. The columella is thin, slightly 

 sinuous, the edge reflected and appressed above. 



Length 6, diam. 1.4 mm., 9^ post-nuclear whorls. 



Type no. 3031 A. N. S. P. 



Turbonilla (Pyrgiscus) santodomingensis Pils. and Johns. Plate XXXV], fig. 4. 



Proc. A. N. S. Phila., 1917, p. 175. 



Turbonilla (Pyrgiscus) beatula Pils. and Johns. Plate XXXVI, fig. 2. 

 Proc. A. N. S. Phila., 1917, p. 174. 



Turbonilla (Chemnitzia) galeata Pils. and Johns. Plate XXXVI, fig. 5. 



Proc. A. N. S. Phila., 1917, p. 175. 



Turbonilla (Chemnitzia) peraequa Pils. and Johns. Plate XXXVI, fig. 6. 



Proc. A. N. S. Phila., 1917, p. 175. 



