176 BULLETIN OF THE 



fossil shells named Ptychosalpinx by Gill, in 1867, of which Buccinum Escheri 

 Mayer and B. altilc Conrad are types. 



The animal is pure white, and destitute of eyes. The tentacles are small, the 

 proboscis extremely long ; the verge is long, sigmoid, flattened, and has a small 

 pointed process at the tip. The dentition resembles that of Chrysodomus 

 {Mohnia) Molmi Friele (North Atlantic Exp., Keport, Part I., plate v. fig. 14, 

 1882), but the teeth are wider, the laterals more arched, and it is certain that 

 the rhachidian tooth has only one prong or cusp, while the laterals have no 

 small denticles between the two terminal ones. If this specimen had not re- 

 tained the soft parts I should have supposed it to be a Liomesus. The keeled 

 columella is peculiar, though this feature is common to Liomesus, but the faint 

 plait-like ridges above are merely the raised edges of the siphonal fasciole, 

 showing through the enamel, and they disappear in adult specimens and are 

 not present in some young ones. 



Genus LIOMESUS Stimpson. 



Buccinopsis Jeffreys, not Conrad. 



Liomesus was defined before Buccinopsis Jeffreys, and would take precedence 

 of it even if the name Buccinopsis had not been long preoccupied. 



Liomesus ? Stimpsoni n. s. 



Plate XXXV. Fifir. 11. 



Shell solid, strong, porcellanous; suffused with flesh color, lighter toward 

 the apex; short-fusiform with the extreme apex a little flattened; six-whorled; 

 nucleus minute, somewhat sunken, with the shell for two and a half whorls 

 smooth polished and white ; after this the sculpture gradually appears, and 

 consists of spiral threads, or cinguli, smaller, rounder, and more distant an- 

 teriorly, wider, flatter, and closer posteriorly, except that in front of the suture 

 there are one or two rather wider interspaces; beside this there are obsolete 

 spiral striae and rather strong lines of growth passing equally over the whole 

 shell; epidermis thin, yellowish; the whorls are slightly flattened behind and 

 squared off to the suture, producing a slightly turrited aspect, but the suture 

 is not channelled; canal short, wide, deeply notched, producing a strongly 

 marked but not swollen fasciole; aperture rather elongated, not wide, thick- 

 ened within; on the pillar a moderate whitish callus, which is microscopically 

 punctate, a thin wash on the body; the outer lip thick from the thickness of 

 the shell, a little lirate by the sculpture close to the sharp edge, but not re- 

 flected; canal short, not recurved; pillar obliquely truncate, arcuate, keeled 

 on the front edge. Max. Ion. of shell, 32.5; of last whorl, 26.5; of aperture, 

 20.0; max. lat. of shell, 18.7; of aperture, 9.0 mm. 



Habitat. U. S. Fish Commission Stations 2314 and 2625, off the Carolina 

 coast, in 159 and 247 fms., sand, bottom temperature 46° to 47°. 5 F. 



February 28, 1889. 



