374 EEV. E. B00& WATSON ON THE 



the outer lip is not thickened externally, nor distinctly toothed 

 internally ; but these features are perhaps due to the sheU not 

 being quite full-grown ; the mouth, too, is a little broad for the 

 genus. The operculum of Metula is unknown to me ; but Adams's 

 figure of the operculum of CantJiarus is in form very similar (only 

 that in the ' Challenger ' species the apex is a little more turned 

 in subspirally), and Troschel confirms Adams's classification here, 

 and puts the two genera in closest collocation. The shell has 

 some faint resemblance to Pisania reticulata, A. Ad. 



2. Ftjstis (Sipho) , n. sp. ? 



St. 47. May 7, 1873. Lat. 41° 15' N., long. 65'' 45' W. Off 

 Halifax. 1340 fms. Mud. 



The four specimens of this species are in bad condition, being 

 dead, broken, and not full-grown. It resembles F. cinereus, Say 

 (see Binney, Gould's Invert. Mass. p. 870, fig. 637) ,= Buecimm. 

 pUcosum, Menke (see Philijjpi, Abbild. &c. i. p. 109, pi. xxvi. fig. 8); 

 but its longitudinal ribs are more numerous, and, instead of being 

 convex to the right as in that species, they are convex to the left. 

 The corresponding whorls here are smaller ; and it has no ajDproach 

 to an umbilicus. It has also some resemblance to £. ohsoletum, 

 Say,=iVffss« noveboracensis, Wood, Index, p. 214, Suppl. pi. iv. 

 fig. 26, but is very obviously difi"erent. 



3. Fusus (Sipho) ptekhostoma, n. sp. 



St. 141. Dec. 17, 1873. Lat. 34° 41' S., long. 18° 36' E. 20 

 miles S.S.E. of Cape of Grood Hope. 98 fms. Sand and mud. 

 Bottom temperature 49°"5 F, 



Shell. — Fusiform, with a shortish base, a high spire, and a bent 



mamillary apex ; ribbed, and with rather fine spiral threads ; light 



brown and thin. Sculpture. Longitudinals — each whorl is crossed 



by about 15 concave, sinuous, narrow, and little-raised ribs, which 



on the last whorl die out on the base. The fine hair-like lines 



of growth correspond with the curves of the ribs. Spirals — 



below the suture there is a slightly constricted area, as in the 



Pleurotomidse ; below this is a very blunt indistinct carination. 



The whole surface is covered with slight rounded spiral threads, 



which are markedly stronger and wider parted on the base and 



snout. Colour a ruddy brownish yellow, with a very thin, hard, 



smooth, persistent epidermis. Spire high, conical. Apex bent, 



cylindrical, the first and second whorls being nearly of a size, 



and both rather ewoln. Whorls 7, convex, slightly constricted 



