292 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. 
Daphnella (Surculina) cortezi Da t, n. sp. 
Shell slender, chestnut brown fading to white or yellowish, fusiform, the spire 
shorter than the aperture, with more than five whorls; nucleus defective ; some- 
what constricted over the anal fasciole with an appressed suture, periphery moder- 
ately rounded; axial sculpture at the suture of small, little-raised folds, with wider 
interspaces, not surpassing the width of the fasciole; on the easlier whorls are 
small, feeble, narrow axial riblets extending to the suture (on the antepenultimate 
whorl fourteen), with wider interspaces and almost vertical; these are crossed by 
very numerous flat, strap-like spirals with narrower channelled interspaces some- 
what unequal in width and covering the whole shell; the entire surface is also 
sculptured with a multitude of fine spiral striae; outer lip thin, hardly arcuate ; 
inner lip smooth, the surface erased; pillar anteriorly rapidly attenuated; anal 
suleus shallow and inconspicuous; canal long and wide. Length of (decol- 
late 44 whorled) shell, 39-43; of last whorl, 29-34; of aperture, 24-27 ; max. 
diam. about 14 mm. 
U.S. S. “ Albatross,” station 2919, off Cortez Bank, in 984 fathoms, mud, 
bottom temperature 38° F. U.S. N. Mus. 110,613. Also off San Diego, Cal., 
at station 43538, in 639 fathoms, mud, bottom temperature 39°. 
The second specimen fortunately contained the soft parts, which were of a 
brownish color, the foot broad and large; the animal contracted by alcohol shows 
no tentacles, eyes, or muzzle, the retractile proboscis is large and rather long. 
There is no operculum; the anterior margin of the foot is transversely truncate and 
duplex, or with a double edge, the two separated by a shallow sulcus; the gill and 
osphradium large and produced. ‘The siphonal fold of the mantle is large, elon- 
gate and smooth-edged; the posterior end of the foot bluntly rounded, the upper 
surface of the foot strongly corrugated, with no trace of an opercular gland. The 
verge was retracted in a sigmoid curve, its form subcylindical near the base and 
gradually attenuating distally, the extreme tip papilliform, with no trace of an 
appendix. 
It is of course possible that the typical species may differ anatomically from this 
one, but the shells are in general sufficiently similar to be provisionally associated. 
Whether they have anything to do with Daphnella is of course problematical, but 
that is the Mangilioid group they are least unlike. 
The place of the two following species is also uncertain, nothing being known of 
the soft parts. 
Clinura monochorda Da tt, n. sp. 
Plate 13, figure 1. 
Shell small, white, biconic, with a very thin yellowish periostracum and six 
sharply angular whorls; nucleus eroded; suture distinct, not appressed ; axial 
sculpture of (on the penultimate whorl thirteen, on the last whorl seventeen) sharp, 
narrow, nearly vertical ribs, with wider interspaces, arcuate and feeble above the 
