334 REPORT ON ALBATROSS MOLLUSCA — DALL. 



Peristichia toreta Dall. 

 Plate xi, Fig. 10. 

 Peristichia toreta Dull, Bull. Mas. Coinp. Zool., xvm, p. 340, Juue, 1889. 



Shell slender, yellowish white, thirteen-whorled; nucleus minute, 

 glassy, set on edge, having about two turbinate whorls 5 spire with the 

 suture distinct, marked by a plain or slightly undulate thread behind 

 it; behind this is a strong nodulated spiral, with round nodules, then a 

 little interval and two more, slightly smaller, similar nodulous spirals, 

 adjacent to each other and to the suture behind them; the last whorl 

 would show about thirty-four nodules in its circuit; transverse sculp- 

 ture of elevated ridges, visible in the interspaces following the line of the 

 nodules across the whorl; on the rounded base they appear as strong 

 radii ; base with one strong cord, with a deep sulcus outside of it, and 

 the space between it and the pillar somewhat excavated; aperture 

 ovate; pillar straight, forming almost a right-angle with the lip in front 

 of it; outer lip with three strong internal liras; body with the basal 

 cord projecting, slightly covered with enamel; outer lip swollen, vari- 

 cose, and whiter than the rest of the shell, its margin undulated by the 

 external sculpture; callus joining the piilar and outer lips distinct and 

 continuous. Maximum longitude of shell, 10.75; of last whorl, 3 ; max- 

 imum latitude of shell, 3""". 



Hab. — Coast of North Carolina, at U. S. Fish Commission Stations 

 L'007, 2608, in 18 to 22 fathoms, sand, 10 miles off Cape Lookout; bottom 

 temperature 73° to 78° F. Charlotte Harbor, West Florida, in 2 fath- 

 oms, weedy bottom; Dall. Key West, between tides; 11. Hemphill. 



This is an extremely elegant shell, in which the relative strength of 

 the transverse and the spiral sculpture varies somewhat in different 

 individuals. The sides of the spire are straight, but the whorls are 

 distinctly marked. 



The color in very fresh specimens is a milky white, more or less 

 clouded with pale yellowish brown on the base or sides. 



Superfaniily 'IMt^lOG-LOSS-A.. 



Family T1UTON1ID.F. 



Giims TRITONIUM Link. 



Subgenus KANFLARIA Schumacher. 



Ranularia tuberosa Lamarck 



de la Plata, in lOi fathoi 



Family OOCORITID^E. 



Genus OOCORYS Fischer. 



Oocorys sulcata Fischer. 



Oiicorys sulcata Dall, Bull. Mus. Com]). Zool., win, p. 228, 1889. 



Collected at Station 2751, south of St. Kitt's, West Indies, in OS'S 

 fathoms, ooze; temperature, 3!)°.9 F. 



