EAST COAST MARINE SHELLS 



135 



whorl; color yellowish white, banded with 

 yellow or orange-brown. Length 21 mm. 

 Depth range 14-50 fathoms. 



PI. 52, Fig. 11 



Cape Hatteras, North Carolina to 



West Indies 



CYMATOSYRINX PAGODULA Dall. Length 18 mm. 

 Depth range 50-175 fathoms. 



PI. 50, Fig. 10 



Florida and West Indies 



CYMATOSYRINX THEA Dall. Whorls eight; 

 often pale brown with a shiny, thins epi- 

 dermis, interior aperture brown; eleven 

 short, oblique ribs, most prominent at 

 periphery and fading away above; some 

 strong raised threads at base. Length 15 

 mm. Depth range 3-15 fathoms. 



PI. 52, Fig. 1 



PI. 68, Fig. 1 



Cape Hatteras, North Carolina to 



Florida Keys 



GENUS CLATHODRILLIA Dall 1918, Drillla 

 of Authors in Part 



CLATHRODRILLIA OSTREARDM Stearns. Whorls 

 nine, rounded, clearly shouldered; suture 

 well Impressed and bordered below by a 

 rather broad flattish excavated area in the 

 center of which runs an elovated somewhat 

 interrupted keel together with finer lines; 

 parallel with the latter on body whorl 

 about fourteen spiral ridges and fewer upon 

 the spire; the ridges crossed by stronger 

 axial ribs which number about twenty-one 

 upon tne final whorl; notch moderately deep; 

 color usually brownish. Length 22 mm. 



A very variable shell which is 

 rather common and well distributed. Depth 

 range 1-15 fathoms. 



PI. 50, Fig. 17 



North Carolina to Gulf of Mexico 



CLATHRODRILLIA EBUR Reeve. Shell solid, 

 whitish with a pale yellow epidermis; su- 

 ture distinct and somewhat puckered from 

 the axial rib terminations; seven rounded 

 axial ribs upon final whorl which are 

 crossed by numerous close-set spiral lines 

 which almost completely and uniformly cov- 

 er the surface; notch U-shaped. Length 

 13 mm. Depth range 14-95 fathoms. 



PI. 51, Fig. 3 



North Carolina to Gulf of Mexico 



CLATHRODRILLIA ALBINODATA Reeve (C. zebra 

 Lam.). Shell orange or brovm in color with 

 a double row of knobs on the periphery; 

 one to two lesser white bands upon knobs or 

 below in addition to more prominent ones. 

 Length 9 mm. 



A very striking little shell taken 

 only once by the writer inside the North 

 Inlet at Palm Beach, Florida, apparently 

 the first record for the east coast. Four 

 examples were found living under a single 

 stone in about eight feet of water. Later 

 it was found in a similar station in Upper 

 Biscayne Bay, near Arch Creek. 



PI. 52, Fig. 10 



Charlotte Harbor, west Florida; 



Palm Beach to West Indies 



CLATHRODRILLIA LEUCOCYMA Dall. Angle at 

 periphery bearing a pair of close revolving 

 ribs, more prominent than remainder of spi- 

 ral sculpture and tipped with white where 

 crossing the longitudinal ribs. Length 15 

 mm. 



There are about eight prominent 

 double whitish knobs upon each of the lat- 

 ter whorls. The shell is grayish black in 

 color. It is common at Sanibel, Florida. 



PI. 52, Fig. 13 



PI. 68, Fig. 7 



Florida; Yucatan 



CLATHRODRILLIA EBENINA Dall. A dead-black 

 shell when taken alive, fading to brown; 

 eleven whorls, two of these belonging to 

 smooth, dark brown, nucleus; final whorl 

 more than half length of shell; about fif- 

 teen transverse ribs on final whorl and ex- 

 cluding the varix in addition to the sharp 

 elevated ribs; spaces between ribs much wid- 

 er; varix large; fine, uniform, spiral 

 threads with wider interspaces, not cutting 

 the ribs on periphery; suture distinct; ca- 

 nal wide, short; notch circular, almost 

 closed in front. Length 16.5 mm. 



This shell is sometimes found in 

 the Pliocene of the Caloosahatchie beds, 

 Florida. It lives in shallow water on the 

 Florida Keys. 



PI. 52, Fig. 7 



Florida Keys 



CLATHODRILLIA HARFORDIANA Reeve. Strongly 

 and widely indented below suture; brownish 

 red. Length 18 mm. 



It has been reported from Sanibel, 

 Florida, 



