672 DR. GWYN JEFFREYS ON THE MOLLUSCA OF THE [Nov. 14, 
mouth oblong-oval: margin entire: inside glossy, showing the im- 
pression of the radiating strie. L. 0-2, B. 0°15. 
‘ Porcupine’ Exp. 1870: Atl. St. 16. Three specimens. 
This species differs from 7’. fulva in being more raised and oblong, 
as well as in the peculiar sculpture and position of the beak. 
4. Tectura PusILia’, Jeffreys. (Plate L. fig. 3.) 
SHELL roundish-oval, somewhat depressed, rather thin, opaque 
and lustreless: sculpture extremely numerous, crowded and regular, 
delicate, minute strize, which radiate towards the margin as in other 
species, and cover the whole surface: colour whitish: beak placed 
at less than one third from the front margin ; it is slightly incurved 
and pinched-up ; apex apparently deciduous : mouth roundish-oval : 
margin thin : inside smooth and glossy : scars indistinct. L. 0:125, 
B. 0:1. 
‘ Porcupine’ Exp. 1870: Atl. St. 16, 17a. A few dead specimens. 
5. Tecrura ApUNCA , Jeffreys. (Plate L. fig. 4.) 
SHELL oblong, raised but contracted near the beak so as to make 
the latter more prominent, rather thin, opaque and lustreless : 
sculpture, several fine strie which radiate towards the margin; most 
of them are alternately larger and smaller; they do not extend to 
the upper part of the shell: colour whitish: beak placed in front, 
about one third of the whole length; it is strongly incurved or 
hooked, and has a subspiral and deciduous apex: mouth oblong : 
margin thin, entire: inside smooth and glossy: head-scar semi- 
circular, L. 0:2, B. 0°125. 
‘Porcupine’ Exp. 1870, Atl. St. 17a. A single and imperfect 
specimen, but characteristic. Mr. Dall has seen it, and says it is 
probably his Cocculina beanii. I will, however, retain provisionally 
the specific name which I have given. 
Dall’s species was dredged in the ‘ Blake’ Expedition off the 
West Indies in 399-5621 fathoms, and by Professor Verrill off the 
coast of New England in 100-365 fathoms. 
6. TecruRA GALEOLA®, Jeffreys. (Plate L. fig. 5.) 
SHELL resembling an ancient helmet or casque, strong and 
thick for its size, opaque and lustreless: sculpture, numerous and 
close-set fine and minute radiating strize, which cover the whole of 
the exterior; there are also occasional and well marked lines of 
growth, which are somewhat crowded towards the margin: colour 
whitish : deak small, incurved, and pointed, placed very near the 
front margin and almost overhanging it: margin entire, compressed 
and forming a rim on the front half: inside smooth: scars as in 
Lepeta ceca. L. 0°225, B. 0°175. 
‘Porcupine’ Exp. 1870: Atl. St. 24. A single specimen. 
If the peculiar shape of this shell may be regarded as a generic 
character, I would suggest for it the name Dadlia, as a mark of respect 
for the great malacologist Mr. Dall, who has examined my specimen. 
' Tiny. ® Hooked. - 
° A hollow vessel shaped like a helmet. 
