378 PROCEEDINGS OF THE ACADEMY OF [PaRT II 



Turritella domingensis Pilsbry and Brown. 



Turritella domingensis P. and B., Proc. A N. S. I^hila. 1917, p. 35, pi. 5, 



figs. 7, 7a, 9. 

 Turritella exoleta Linn., in part, Gabb, I c. 



Type and parts of six smaller specimens are 2611 A. N. S. P. 



Turritella sulcigyrata Pils. and Johns. Plate XLII, fig. 15. 



Proc. A. N. S. Phila., 1917, p. 171 



CAECIDAE. 



Caecum (Meioceras) constrictum Gabb. Text-flg 17 



Caecum constrictum Gabb, Trans. Amer. Philos. Soc, xv, 1873, p. 241. 



Fig. 17. Caecum constrictum. 



The smooth shell is not much arched, has a prominent, irregular- 

 ly dome-like plug, and is decidedly contracted at the aperture which 

 is not very oblique. 



Length 2.05, greatest diam. 0.6 mm. 



Type no. 3017 A. N. S. P. 



This species differs from C. nitidum Stimps. by the far less oblique 

 aperture. The single specimen is evidently adult. 



Caecum anellifer Pils. and Johns. Text- fig. 18. 



Proc. A. N. S. Phila., 1917, p. 172. 



Fig. 18. Caecum anellifer P. and J. 



