240 BULLETIN: MUSEUM OF COMPAEATIVE ZOOLOGY. 



tare 42° ; and 3393, iu 1020 fathoms, mud, temperature 36°. 8, both iu the Gulf of 

 Panama. 



The species is more conical than S. cylindrellus, the apex wider, more blunt, and 

 the si)irc less sunken. The sculpture is strouger and relatively coarser in the 

 vouu"' siiell above described. A fragment of an adult measures about 30 mm. in 

 leno'th and 15 mm. in diameter ; on it the sculpture is nearly obsolete ; the loss of 

 the periostracum may account for part of the difference, but that there was origi- 

 nally a considerable disparity is certain. 



Scaphander decapitatus Dall, n. sp. 



Shell subcyliudric, anterior and posterior ends about equally rounded, white, 

 covered with a pale yellowish, thin, polished periostracum ; apex with a small 

 dimple, hardly a perforation, the edge of the aperture coiled around but hardly 

 beyond the margin of the apex ; axial sculpture only of faiat lines of growth ; the 

 posterior fourth of the shell with numerous close, fine spiral striae, but no puuc- 

 tations ; the middle part is without spirals ; the anterior part with a few sparse, 

 irregularly disposed spiral striae and numerous very faint, almost microscopic 

 striulae ; aperture as long as the shell, not produced or channelled behind ; outer 

 lip thin, nearly straight ; body with a faintly granular, white, thin wash of callus ; 

 pillar thin, short, very obliquely attenuated. Lon. of shell, 15 ; max. diam., 8 mm. 



U. S. S. "Albatross," station 368:), in Mid Pacific, N. latitude 9° 57' W., 

 longitude 137° 47', in 2690 fathoms, radiolarian ooze, bottom temperature about 

 35° F. U. S. N. Mus. 110,746. 



From the fact that the outer lip is not channelled or produced behind the apex 

 of the whorls, this species has somewhat the aspect of a Cylichnium. The absence 

 of punctation is also unusual ; but the shell has more the look of a Scaphander 

 than anything else, and, iu the lack of any knowledge of the soft parts, more exact 

 reference to its place ia the system must at present be deferred. 



Sabatia Bell.^.rdi. 



SABATINA D.VLL, nov. 



The callosity on the body of the species of this subgenus in most if not all cases 

 does not form a " fold." It is an amorphous mass, sometimes granular or smooth, 

 but occasionally with a tubercular surface. The typical species, if correctly fig- 

 ured, does seem to iiavc the callus i)roduced iuto the interior, but tiic recent species 

 without exception differ from Bellardi's fossil, not only in the character of the 

 callus, but also in their globose, instead of jjyriform, shell. For the globose recent 

 species, therefore, I propose the name Sabatina witli S. planetica Dall, as type. 

 They Lave an animal capable of retiring wholly into the shell, and gastroliths 

 exactly of the type found in Sraphander lignarius. A large foraminifer was found 

 iu tlie stomach of the following species. 



