292 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. 



Daphnella (Surculina) cortezi Dall, n. sp. 



Shell slender, chestnut brown fading to wliite or yellowish, fusiform, the spire 

 shorter than the aperture, with more than five whorls; nucleus defective; some- 

 what constricted over the anal fascicle 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 earlier 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 

 sulcus shallow and inconspicuous ; canal long and wide. Length of (decol- 

 late 4^ whorled) shell, 39-43; of last whorl, 29-34; of aperture, 24-27 ; max. 

 diam. about 14 ram. 



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 4353, in G39 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 verge was retracted in a sigmoid curve, its form subcylindical near the base and 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. 



Clin\ara monochorda Dall, n. sp. 



riatc 13, ngure 1. 



Shell small, white, biconic, witli a very thin yellowish pcriostracum and six 

 sharply angular whorls; nucleus eroded; suture distinct, not appressed; axial 

 sculptun; of (on the ponultiniato whorl thirteen, on the last whorl seventeen) sharp, 

 narrow, nearly vertical ribs, with wider interspaces, arcuate and feeble above the 



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