1 92 BUCCINUM. 



any specimens of ciliatum which I have seen. The form is much 

 like that of sericatum, Hanc, except that the whorls are inflated 

 and shouldered, and the suture canaliculate. Whorls seven. 



Lentith TSC) in., width '8 in. ; length of aperture "60 in. 



Arctic Ocean, near Icy Cape. 



The al)ove is Mr. Pall's description, wdio, moreover, appends 

 n. s. ■/ to tlie name. It is a very doubtful species, the ennaliculate 

 suture being its onl}' peculiar feature, and that would indicate its 

 pertinence to the genus Volufharpa. 



B. HuMPHREYSiANUM, Bennett. PL 1C>, ftgs. 343, 344 ; PI. 11, 

 ligs. 346-352 ; PI. 19, figs. 383, 385. 



Shell thin, subtranslueent or nearly opaque, pale brownish or 

 3'ellowish, sometimes mottled with fawn or reddish l)i'own, or 

 irregularly' banded with rows of spots or chain-like markings, 

 frequently without spots or mottlings ; scul])ture numetous fine 

 close-set revolving lines; no longitudinal ribs, or at most but 

 faint indications of them upon the spire-whorls ; poriostraca 

 very thin, ciliated. Length, 1 •75-3*5 inches. 



/Shetland Is. ; Ireland ; Norway ; American Arctic Ocean ; Banks 

 of Newfoundland; Lapland; Coast of Provence, France ; Sicily. 



Dr. Gwj'n Jeffreys says that " Dr. Stimpson must have mis- 

 taken some other species (perhaps B. ciliatum) for. B. Hmn- 

 ])hretj!<ia,mnii when he described the latter as having a, ciliated 

 epidermis ; and I therefore cannot recognize the North American 

 localities indicated by liim. B. ventricosum of Kiener (from the 

 coast of Provence), is closely allied to our shell ; but the wliorls 

 are more tumid and gibbous, and the operculum is not so dispro- 

 portionately small. 'I'hey bear the same relation to each other as 

 ApoyrJiais Seri'esiana does to A. Macandrcae. The operculum 

 bears the same proportion to the size of the mouth as that of 

 Aporrhaia ; it seems to be more ornamental than useful, like the 

 coquettish hats worn by the girls of Tuscany on the crown of 

 their heads. The opercular lobe covers only the centre of the 

 operculum, the upper and under sides of which are sometimes 

 encrusted with sessile Foraminifera. The egg-cases ai-e sepa- 

 rate and hemis])lierical. Some of the above characters are so 

 peculiar as perhaps to warrant the generic separation of B. 

 Huwphreysiamtm, under the name of Mada, its surface being 

 oflabrous." 



