186 PEOCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



"Porcupine" Expedition, 1870, Station 50; Benzert Road, 

 40-65 fathoms ; Adventure Bank, 92 fathoms. 



Distribution. — British Isles to Madeira and Canaries ; also in the 

 Mediterranean. A well-known Pliocene fossil. 



Several localities appear on the Museum boxes, but none are 

 sufficiently certain to cite. 



Clathurella clathrata (de Serres). 

 Pleurotoma clathrata, de Serres: Geogn. midi France, 1829, p. 113, 



pi. ii, figs. 7, 8. 

 Clathurella {Clathromangelia) clathrata, de Serres: Kobelt, p. 369. 



"Porcupine" Expedition, 1870, Adventure Bank, 92 fathoms. 



Distrihutioti. — Mediterranean. A Tertiary fossil. 



I have followed the traditional identification, but if the recent 

 species be distinct, as has been suggested, it should bear the name of 

 granum, Phil. 



Clathurella Leufroti (Michaud). 

 Pleurotoma Leufroyi, Michaud : Bull. Soc. Linn. Bordeaux, vol. xi 



(1828), p. 121. 

 Clathurella {Leufroyia) Leufroyi, Michaud : Kobelt, p. 365. 



"Porcupine" Expedition, 1869, Station 36; Little Minch, 45-50 

 fathoms; 1870, Adventure Bank, 92 fathoms. 



Distrihution. — Norway to the Mediterranean ; Canary Islands. 

 Fossil in European Tertiaries. 



Jeffreys notes that the animal " is sometimes of a pea-green colour, 

 which is perceptible through the shell " : so far as my own observation, 

 of Guernsey and Herm specimens, has gone, the colour has varied 

 from very pale fleshy to white. 



Clathurella linearis (Montagu). 

 Murex linearis, Montagu: Test. Brit., vol. i, p. 261. 

 Clathurella {Cyrillia) linearis, Montagu: Kubelt, p. 367. 



"Porcupine" Expedition, 1869, Lough Foyle, 10 fathoms; 1870, 

 Stations 13, 50; Adventure Bank, 92 fathoms. 



Bistrihition. — Finmark to the Mediterranean and Canaries. A 

 Pliocene and Post-Tertiary fossil from many European localities. 



I am unable to decide as to the priority between this name and the 

 Murex elegans of Donovan. 



Clathurella Marshalli, n.sp. PL XVI, Figs. 7, la. 



Shell elongate-fusiform, fairly solid, spire well drawn out. Colour 

 (dead) whitish-brown. Whorls 7^, convex, regularly increasing. 

 Protoconch pointed, well exserted, of about 3J whorls, worn and 

 polished but bearing traces of the regular ' C/«i!/m/<'//«-sculpture.' 

 Residue of the shell bearing rounded longitudinal riblets of fair size, 

 crossed by a number of spiral threads (about 6 on the penultimate 

 whorl), and showing traces of a smoother area below the suture. 

 Aperture of fair size, with a short, slightly recurved, canal. Long. 4 5, 

 lat. 1"8 mm. 



"Porcupine" Expedition, 1870, Station 17. 



