360 EEY. E. BOOG WATSOK ON THE 



!Pabr., it is more delicately sculptured, is higher in the spire, and 

 is of slower increase. The absence of the generic teeth on the 

 pillar and the presence of the slight basal sinus are both features 

 not without parallel in the genus Adrnete ; but in all AdmetcB so far 

 as known to me there is a varicose twist at the point of the pillar, 

 between which and the edge of the inner lip lies a more or less 

 distinct umbilical chink or furrow. In this ' Challenger ' shell there 

 is no swelling whatever, and scarcely any twist even in the sculp- 

 ture, and not the slightest approach to an umbilical chink. The 

 absence of the varicose twist is, indeed, rather an objection to 

 putting this species under Buccinum ; but that genus already 

 accommodates forms still more exceptional than the present one. 

 VolutJiarpa is perhaps nearer ; but I do not sufficiently know the 

 limits of that genus to take liberties with it ; the absence of an 

 operculum, which seems its only positive claim to generic stand- 

 ing, is a feature out of recognition in the present case. 



Phos, Montf. 



1. P. naucratoros, n. sp. | 2. P. bathyketes, n. sp. 



1. Phos natjceatoeos, n. sp. (vavKpaTwp, master of the fleet, 

 Admiralty.) 



St. 219. March 10, 1875. Lat. 1° 54' S., long'. 146° 39' 40" E. 

 Admiralty Islands, N.E. of Papua. 150 fms. Mud. 



Shell. — Strong, smooth but not polished, yellowish white, with 

 some pale ruddy bands, with a high conical spire, small sharp apex, 

 and a slightly impressed suture. "Whorls rounded, with narrow 

 ribs and spiral threads, a short contracted base, and a twisted pil- 

 lar. Sculpture. Longitudinals — on the last whorl there are about 

 15, on the earlier about 18, rather narrow, raised, rounded, flex- 

 uous ribs, of which one on each whorl is a little larger than the 

 rest ; they extend to the upper suture and also to the point of 

 the base, they are parted by rounded furrows of twice their 

 breadth ; the lines of growth are extremely numerous and sharp ^ 

 Spirals — the whole surface is densely packed with strongish, but 

 very unequal, rounded threads parted by fine small furrows ; there 

 is a broad shallow furrow round the upper part of the pillar, and in it 

 the spiral threads are sharper and sparser than elsewhere. Colour 

 porcellaneous white, stained with yellow on the surface, banded 

 with palish rufous and white. Sj)ire high, narrow, conical. Apex 

 small and sharp, consisting of four bicarinated, conically shaped. 



