108 BULLETIN OF THE 



Daphnella sofia var. hyperlissa Dall. 



Shell shorter, stouter, with a shorter and wider canal ; the axis more widely 

 pervious ; suture appressed without the puckered band, but with a few faint 

 arched wavelets which nearly cross the fasciole, not forming a band ; there are 

 three normal and three or four Sinusigera whorls, all of which are more in- 

 flated, while the fasciole is less sloping. There are no strong threads on the 

 periphery of the early whorls. Lon. 8.5 ; lat. 4.2 mm. 



Habitat. U. S. Fish Commission Station 2678, off Cape Fear, N. C, in 731 

 fms., ooze, bottom temperature 39°.8 F. 



The shell (adolescent) much resembles D. sofia, except in the particulars 

 mentioned. 



Subgenus GLYPHOSTOMA Gabb. 



■'b 



? Eucheilodon Gabb, Joum. Acad. Nat. Sci. Phila., 2d ser., IV. p. 379, 1860. 

 Glyphostoma Gabb, Proc. Acad. Nat. Sci. Phila. for 1872, p. 270. Type, G. dentifera 



Gabb, /. c, p. 271, pi. xi. fig. 4, Feb., 1873. 

 Glyphostoma Fischer, Manual, p. 573, 1883 ; as a section of Mantilla. 

 Lienardia Jousseaume, Bull. Soc. Zool. de France, VIII. xl. 1884 {fide Tryon, Man. 



Pleurotomidce, pp. 271, 353, 1884). 



This group, described from the Miocene of Santo Domingo, appears in the 

 recent state in the Antillean seas. A peculiarity not mentioned by Gabb is 

 that the surface of the whole shell is covered with a very delicate microscopic 

 granulation or shagreening. 



Glyphostoma dentifera Gabb? 



Glyphostoma dentifera Gabb, Proc. Acad. Nat. Sci. Phila. for 1872, p. 271, pi. xi. fig. 

 4, Feb., 1873. Trans. Am. Phil. Soc, XV. p. 210, 1873. 



Habitat. Sand Key, in 15 fms. 



A single imperfect specimen of Glyphostoma was obtained as above. It does 

 not agree with any of the others, but is so like Gabb's figure of his type, that 

 I refer it provisionally to G. dentifera. The shagreening is extremely fine, and 

 gives a faint dusty appearance to the surface under an ordinary hand magnifier 

 of 8-10 diameters. 



Glyphostoma Gabbii n. s. 



Plate XIII. Figs. 4, 5, 7, 8. 



Shell white, with a peripheral and a basal brown band with ill-defined boun- 

 daries, and a blotch of brown on the canal ; the transverse ribs show lighter 

 through the peripheral band and the glassy nucleus is brownish ; nucleus 



