4 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 9I 



teriorly. The basal sinus is deep and reflected at the edge with a 

 strong parietal callus ; the stromboid notch is shallow. 



This genus suggests Elaeocyma Dall, type E. empyrosia Dall, but 

 differs from it in having the nuclear whorls rounded instead of cari- 

 nated and the ribs stronger, and above all in the detailed fine sculpture 

 described above. 



The genus is represented by ii species in our collection, of which 

 only two have been named, namely F enimorea moseri, Da.\\ = Pleuro- 

 toma (Drillia) moseri Dall from the West Coast of Florida and Drillia 

 fucata, Reeve from the Bahamas. The unnamed species come from : 



East Coast of Florida (3) 

 West Coast of Florida (i) 

 Puerto Rico (2, i here described) 

 St. Thomas (i) 

 Barbados (2) 



FENIMOREA JANETAE, n. sp, 



Plate I, figs. 4-7 



The shell is rather large, with the posterior groove and an area 

 about as wide as this groove, anterior to the groove, on the axial ribs, 

 white. This is followed by a broad zone of chestnut-brown occupy- 

 ing about half the whorls between the summit and suture ; this zone 

 terminates a little below the periphery. Anterior to this is a fainter 

 thread of brown and a little paler brown area in the groove just pos- 

 terior to the fasciole. In addition to this, there are, in the lighter 

 bands in the intercostal spaces, indications of pale brown markings. 

 The broad brown band becomes enfeebled on the last portion of the 

 last whorl. The interior of the aperture is bluish white with the dark 

 band shining partly through this, and the callus on the columellar 

 area is porcelaneous. The nuclear whorls are 1.5, small, well rounded 

 and smooth ; the postnuclear whorls are appressed at the summit with 

 a depressed groove occupying the posterior third between the summit 

 and suture, evenly rounded from the anterior termination of this to 

 the periphery, and marked by strong, broad, rounded, axial ribs, which 

 have their strongest development anterior to the sinus at the summit 

 and become attenuated posteriorly in crossing the base, where they 

 extend to the basal fasciole. Of these ribs, 10 are present on the first 

 four whorls, 12 on the fifth to seventh, 14 on the eighth and ninth, 

 and 16 on the tenth. The spaces separating the axial ribs are about as 

 wide as the ribs. In addition to this sculpture the whorls are marked 

 by slender spiral threads in the depressed area near the summit, of 



