388 EEY. E. BOOG WATSON ON THE 



longed into a projecting, narrow, slightly reverted snout, which is 

 a little bent at the point. Suture small and sharp, interrupted 

 by the lamellae, but very strongly marked by the deep constriction 

 of the whorls. Moutli club-shaped, being oval above and pro- 

 duced into the long narrow canal. Outer Up sharp and thin, 

 leaves the body at a right angle, advances straight to the keel, 

 where a patulous canal is formed in the spike ; below this the lip 

 is extremely patulous, and well arched to the origin of the canal, 

 where the lip is sharply pinehed-in, and from this point runs 

 direct, but a little obliquely, to the point of the snout, where it is 

 squarely cut off. Inner Up is a little concave above, straight 

 on the pillar, slightly obKque down the canal ; it is defined on the 

 body and pillar by a thin, narrow, patulous pad ; this pad crosses 

 the pillar, and runs into the canal, along the side of which it shows 

 only a thin sharp edge, with a small chink behind it. Operculum 

 thin, yellow, ovate, acute, with a terminal apex, and corrugations 

 and striae in the curves of growth. H. 1"27. B. (spines included) 

 0'8, (excluded) 0'5. Penultimate whorl, height 0'19. Mouth, 

 height 0-8, breadth O'Sl. 



This is a species beautiful in form and in texture. "With some 

 superficial resemblance, it differs from T. acantJiodes, "Wats., in its 

 continuous longitudinal lameUge, the thinness of its shell, the 

 delicacy of its surface-texture, and the form of the base. In the 

 latter respects it recalls T. vaginatus, Jan ; but, than that species, 

 it is less carinated, has a more contracted shorter base, a finer 

 snout, and the spines are much more distinctly connected with 

 the continuous lamellse. T. coronatus, H. & A. Ad., a New-Zea- 

 land form, and which extremely resembles T. Goodridgn, For., has 

 a much longer canal, a more tumid body, more numerous varices, 

 with shorter spines not rising, as here, in a coronal round the 

 spire. T. laciniatus, Martyn, from Yanconver's Island, presents 

 a variety slightly 'resembling the 'Challenger' species; but the 

 snout is much shorter, the base more produced ; the spines, too, are 

 very much shorter, and, rising near the suture, project upwards 

 parallel to the spire. 



3. Teophon declinans, n. sp. 



St. 14-1 A. Dec. 26, 1873. Lat. 46° 48' S., long. 37° 39' 30" E. 

 Off Marion Island. 100 fms, (?) Grrey sand. 



St. 150. Feb. 2, 1873. Lat. 52° 4' S., long. 71° 22' E. Be- 

 tween Kerguelen and Heard Islands. 150 fms. Eock. Bottom 

 temperature 35°'2. 



