324 REPORT ON ALBATROSS MOLLUSC A DALL. • 



spirally striate; whorls well rounded; suture distinct ; spiral sculpture 

 of (between the sutures five) primary threads, with a smaller thread in 

 the intervals and tiner ones on the anterior part of the last whorl and 

 canal; these are crossed by fine flexuous lines of growth which decus- 

 sate the threads, or give them, iu strongly sculptured specimens, a 

 somewhat beaded look ; there are also twelve to fifteen faint fiexuous 

 ribs crossing the whorl, tending to become obsolete on the last half of 

 the last whorl, and more marked on some specimens than on others ; 

 these are quite concave at and behind the periphery; canal short, nar- 

 row, twisted to the left; columella rather concave ; aperture entirely 

 simple, with no visible callus; operculum rather wide and short. 

 Maximum longitude of shell, 11; of last whorl, 7.5; of aperture and 

 canal, 5.5; maximum latitude of shell, 4.5; of aperture, 1.25" ,m . 



Hab. — Station 2644, off Cape Florida, in 193 fathoms, sand ; bottom 

 temperature 43°.4 F. ; Station 2668, off Fernandina, in 291 fathoms; 

 also in 205 fathoms, off Fowey Pocks, in the Straits of Florida; by Dr. 

 W. H. Rush, U. S. Navy. 



This is a delicate and pretty little shell, which is, in its general char- 

 acters, very much like the young state of Tritonidea limbata Philippi ( + 

 Fusus pulchellus Pir. non Phil.); but that is more strongly sculptured 

 and has a different nucleus, beside being clouded with color. 



Chrysodomus (Sipho) testudinis sp. nov. 



Shell short, stout, white, with five or more whorls; apex eroded ; the 

 last two whorls show about fifteen short, stout, transverse ribs, which 

 do not reach the suture and become obsolete a little in front of the 

 periphery ; they are most prominent at the shoulder of the whorl; be- 

 hind them there is a moderate constriction and the whorl is strongly 

 appressed in front of the suture; beside the ribs, the transverse sculp- 

 ture eonsists of irregular, strong, incremental lines; spiral sculpture of 

 numerous coarse, close-set, rounded threads, mostly alternating larger 

 and smaller or more and less prominent near the suture; these are a 

 little granulated by the incremental lines; there is a thin, pale yellow, 

 hispid epidermis; aperture elongate, outer lip slightly thickened with 

 a band of livid pink just inside the sharp simple margin ; body and pil- 

 lar with a solid, also slightly pinkish, callus ; pillar a little tortuous, 

 attenuated in front; canal rather short and wide, some what recurved, 

 not well differentiated from the rest of the aperture. Maximum lon- 

 gitude of (decollate) shell, 30; of last whorl, 22.5; of aperture, 18; di- 

 ameter, 15 mm . 



Hab. — Station 2807, in 812 fathoms, ooze, near the Galapagos 

 Islands, Pacific Ocean ; temperature 38°.4 F. 



This is a very strongly marked species, but the specimens were 

 greatly eroded and none showed the nuclear whorls or the sculpture on 

 the canal or near the apex. 



