30 Dr. J. Gwyn Jeffreys’s Notes on 
+Pholadomya Lovent, Jeftr. 
From 85 to 1217 fms. Perfect and large specimens at the 
last-mentioned depth, measuring upwards of an inch in length. 
t?Necra obesa, Lov. 
From 337 to 1536 fms. 
|Necera costellata, Deshayes. 
From 817 fms. 
SOLENOCONCHIA. 
+Dentalium agile, M. Sars. 
From 86 to 1963 fms. ; widely distributed. One specimen 
from between 1500 and 1600 fms. is more than 2 inches long. 
I now find that, compared with D. striolatum or abyssorum, 
the present species is more slender and not so strongly ribbed, 
and that the curve is more gradual and not abrupt towards the 
point or base. Perfect specimens of both species have a short 
terminal pipe within the slit and occasionally issuing from a 
truncated and thickened base, as in D. dentalis and D. taren- 
tinum. Philippi was the first to describe D. agile from the 
Italian Tertiaries as D. tncertum of Deshayes; but it is not 
the last-named species. It was dredged in the ‘ Porcupine’ 
and ‘ Travailleur ’ expeditions off the Lusitanian coasts. 
{Dentalium striolatum, Stimpson. 
From 200-277 fms. JD. brevifissum, Brugnone. 
GASTROPODA. 
Emarginula multistriata*, Jeftr. 
SHELL helmet-shaped, somewhat compressed at the sides, 
rather thin, lustreless, and opaque: sculpture, numerous slight 
ribs, which radiate from the beak or apex to the front margin 
on every side; usually, but not regularly, a smaller alternates 
with a larger rib; the crests are studded with rather distant 
tubercles, giving a prickly appearance ; the intervals between 
the ribs are filled with minute and close-set transverse striz : 
colour whitish: margins slightly notched by the termination 
of the ribs: beak small, incurved, placed perpendicularly to 
the front margin: slit short, but broadish: the fissural fur- 
row is filled up with crowded arched septa or plates: cnside 
* Much striated. 
