218 A. E. Verrill—Mollusca of the New England Coust. 
Length of the largest example, 6™" ; diameter of the oral end, 
"gmm- posterior end, °3™™. 
Station 2037, in 1731 fathoms; and station 2038, in 2033 fathoms 
(No. 35,142). 
These specimens are probably young, but differ from all of our 
recognized species in the peculiar sculpture, in the form of regular, 
microscopic, longitudinal striw. They may, however, prove to be 
the young of D. capillosum J., which we have not yet recognized 
among the specimens dredged on our coast. There is, also, a slender 
shallow-water species, from off Cape Hatteras, which has, when 
young, similar fine striations, but the lines are not so numerous and 
the shell is straighter, 
Dentalium, sp. h. 
Shell small, slender, nearly straight, or very gently curved. The 
sculpture consists of fifteen to twenty narrow, elevated, angular ribs, 
which diminish in size posteriorly and become nearly obsolete near 
the tip; anteriorly they are separated by much broader, clearly 
defined, concave grooves, the sculpture showing in reverse on the 
interior surface. Oral aperture circular, somewhat oblique. Poste- 
rior opening small, circular, squarely truncated. 
Length, 15""; diameter at the oral end, 1°5™"; at the posterior 
end.78 2. 
Station 2038, in 2033 fathoms, three specimens (No. 35,165). One 
specimen, differing from those described in being more slender and 
having more numerous and finer longitudinal ribs, was taken at sta- 
tion 2115, in 843 fathoms. 
These specimens are probably the young of one of the larger spe- 
cies. They resemble the young of some of the varieties of D. oecé- 
dentale, except that they are more slender and straighter. It is not 
improbable, however, that they may prove to be forms of that vari- 
able species. 
Siphodentalium teres Jeffreys. 
Jeffreys, Proce. Zool. Soc. London, for 1882, p. 661, pl. 49, fig. 5. 
Station 2072, in 858 fathoms (No. 38,088) ; station 2084,:in 1290 
fathoms (No. 38,084); and station 2115, off Cape Hatteras, in 843 
fathoms (No. 35,625). 
It was taken off the coast of Europe by the Porcupine Expedition, 
in 1870. ° 
