KEPORT ON THE GASTEROPODA. 243 



This is an exceptional form, having the apex of a Fusus (a feature shared by Fasciolaria coronata, 

 Lam.), and having a long, thin, bent canal and no longitudinal ribs or tubercles, — features which, 

 though present in some species (as, for instance, Fasciolaria tulipa, Linne, and Fasciolaria papillosa, 

 Sow.), are uncommon, especially united. It is also peculiar from the slimness of its form and the 

 thinness of its shell. It is not a Turbinella, for its pillar-teeth are only two, are slight and very 

 oblique ; the operculum, too, is small and thin. No volute has so high a spire, so small a mouth, 

 so long and narrow a canal, nor an operculum of the form which this presents (see Journ. de conch. 

 1877, p. 97). 



4. Fasciolaria armata (A. Adams) (PL XIII. fig. 1). 



Latirus armatus, A. Adams, Proc. Zool. Soc. Lond., 1854, p. 314, No. 11. 



Turbinella carinifera (not of Lamarck), Reeve, Conch. Icon., vol. iv. pi. iii. fig. 14. 



Latirus armahis, Kobelt, Conch. Cab. (ed. Kiister), p. 120, sp. 5 (no fig.) 



Fasciolaria maderensis, Watson, Prelim. Report, pt. 12, Journ. Linn. Soc. Lond., vol. xvi. p. 336. 



Station VIIp. February 10, 1873. Lat, 28° 35' N., loiig. 16° 5' W. Off Tenerife. 

 78 fathoms. Volcanic sand. 



Habitat. — California (A. Adams). 



Shell. — Biconical, fusiform ; as the shell lies on its mouth, the periphery in the centre 

 of the back is exactly in the middle of the shell's length ; solid, angulated, rough and 

 opaque ; ribbed and spirally ridged, with an umbilical chink. Mouth angularly pear- 

 shaped, with a long, narrow, slightly oblique canal ; toothed on the pillar and within the 

 outer lip. Epidermis strong and horny. Operculum dark brown and claw-shaped. 

 Sculpture : Longitudinals — there are 8 to 10 broad, low, rounded, irregular ribs ; they 

 diminish in number up the spire ; they scarcely appear above the suture or on the base ; 

 the lines of growth are numerous, unequal, sharpish, but rather coarse. Spirals — there 

 are spiral ridges which, in crossing the ribs, rise into narrow blunt prickles vaulted 

 but scarcely open in front; of these ridges there is one on the upper whorls, three 

 on the body-whorl, each accompanied below by its shadow, which is sometimes double ; 

 the highest and strongest ridge is remote from the suture, and forms a marked 

 shoulder ; on the snout are two strongish threads, and towards its point four or five much 

 smaller ones. The whole surface is covered with feeble microscopic striae. Colour a rich 

 buff below a darker epidermis, which is strong, horny, and persistent. Spire high, scalar, 

 conical. Apex small and prominent. Whorls 9 to 10, angular, with a long, sloping, 

 slightly concave shoulder defined by the prominent and sharp keel, below which the 

 whorls contract a little to the inferior suture ; the body-whorl is short, and contracts into 

 a long, conical, straight, narrow snout. Suture slight, irregular, impressed, oblique. 

 Mouth bluish white, with a narrow, dirty yellowish edge ; small, deep, oval, angulated 

 above and at the keel, with a long, narrow, deep, slightly oblique canal in front ; exclusive 

 of the canal, the mouth is nearly one-third of the whole length of the shell. Outer lip — 



