354 PROCEEDINGS OF THE ACADEMY OF [PaRT II 



Trophon dominicensis Gabb. Plate XXVIII, figs. 2, 3. 



Trophon dominicensis Gabb. Trans. Amer. Philos. iSoc. XV, 1873 p. 202. 

 Murt'X dominicensis Dall, Proc. U. S. Nat. Mus. xix, 1896, p. 313. 



Whorls seven, strongly angular, the axial ribs armed on the shoul- 

 der with a hollow spine; above the shoulder they are inflated and 

 elevated above the suture. Above, and a short distance below the 

 carina, the surface is smooth, except for a few very fine lines that are 

 visible under the lens. Below there are conspicuous spiral cords. 



Length 17.5, diam. 11 mm. including spines). 



Type no. 3252 A. N. S. P. 



Probably Murex {Trophon) werneri Toula, Jahrb. k. k. geol. Reich- 

 sanstalt Ixi, 1911, p. 479, pi. 29, figs. 9a, b, should be added to the 

 synonymy of T. dominicensis. 



Muricidea striata Gabb. Plate XXVIIl, flg. 7. 



Muricidea striata Gabb, Tr. Am. Philos. Soc, xv, 1873, p. 203. 



Resembles M . spinulosa Heilprin (M. heilprini Cossmann) from 

 the Oligocene of Ballast Point, in general appearance, but is much 

 smaller and less elongate; the spire and anterior canal are shorter, 

 the latter being more recurved; also less spinose. 



Length 12.3, diam. 7.2 mm. 



Type no. 3249 A. N. S. P. 



Typhis alatus Sowerby. 



Typhis alatus Sowb., Q. .1. Geol. Soc, vi, 1849, p. 48, pi. 10, fig. 4. 



Represented by only one immature specimen, no. 3250. 



Typhis obesus Gabb. Plate XXVI II, figs. .5, G. 



Typhis obesus Gabb, Tr. Am. Philos. Soc, xv, 1873, p. 203. Dall, Proc. U. 



S. N. jNI. xix, p. 313. 

 Typhis alatus var. obesus Dall, Trans. Wagner Free Inst, iii, p. 151. 



The type, a single perfect specimen, no. 3251, measures: length 



24.8, diam. 18 mm. Whether it is to be considered a variety of T. 



alatus depends upon the finding of specimens of intermediate form. 



The Bowden (Jamaica) series seems to fall into a longer and a shorter 



race, both smaller than those of Santo Domingo, but of similar shape. 



Coralliophila abbreviata (Lam.) 



Muricidea lata Gabb, Trans. Am. Philos. Soc, xv, 1873, p. 203. 



Gabb's two specimens seem to be identical with this well known 

 recent West Indian species. The type of M. Iota is no. 3248 A. N. 

 8. P. • 



Thais santodomingensis Pils. and Johns. Plate 28, figs. 8, 9. 

 Proc. A. X. S. Phila., 1917, p. 169. 



