OBSEETED AT MOGADOU. 191 



Canariau (Lanzarotan) sliell, though imsupported by the type in 

 his collection, doubtless rests on the authority of a MS. list by 

 myself, with notes or descriptions of all the Canarian shells re- 

 ceived by me from "Webb, drawn up for, and communicated many 

 years ago (in 1833) to my late friend, — of which D'Orbigny has, 

 without acknowledgment, made unsparing use — borrowing most 

 of the new specific names, and arbitrarily changing others, 

 without reference* to their real author. In this list, the small 

 mottled Lanzarotan example of F. Neptuni, Gm., above mentioned, 

 was included ; and it still exists, so marked, in my Canarian 

 (Webbian) collection. 



2. Ctmbitjm peoductum, Lowe. 

 Valuta olla, Lam. (notLum.). 



Plaits 2 ; shell proportionately thin and light, oval or oblong- 

 oval, mostly subventricose ; spire produced, the mammilla glan- 

 diform, prominent, exserted; sutural groove very narrow, deep, 

 constricted, nearly closed, its margin strongly incurved and obtuse 

 or roimded ; shoulder distinct, rounded, incurved, prominent ; 

 aperture ending far below the apex, effuse ; inner lip mostly effuse 

 and indistinct, or altogether obsolete. Colour uniform pale buff", 

 with a dark chestnut-blackish epiderm. 



Vohita olla, Lam. ed. 2. x. 381 ; Swains. Exot. Conch, fig. opt. 

 (not Linn.). Cymha Olla, Sowerb.sp. Conch, p. 7. ff". 1«, h, c, d. Cym- 

 hivm, &c. Philippimcm, Mart. iii. 48. t. 71. f. 766 (pillar 3-plaited); 

 Buonan. 3. f. 6 (puU.). Yetus Olla, Gray, in Pr. Z. S. 1855, p. 51. 



Hab. Indian Ocean, Lam. ; Asiatic Ocean, and probably Africa, 

 Swains. ; Mediterranean (Gibraltar), Sowet-b. ; Mediterranean, 

 Gray. 



Martini's t. 72. ff". 772, 773, carelessly quoted by Swaiuson, I. c, 

 for this shell, are more correctly referred by the same author, 

 two pages earlier in the same work, to Valuta melo, Sol. 



3. Cymbium eubiginosum (Swains.). 

 Voluta ruhiginosa. Swains. 



Plaits 3 ; shell strong, thick, heavy, broadly oblong or cylindric, 

 slightly but equally contracted at each end ; spire short, its 

 maiiimiUa distinct, sometimes, bu.t not usually, a little exserted 



* Except in two instances, — Planaxis Iccvigata, p. 79, and Sanella ahbre' 

 viata, p. 94. The " Planaxis " is a young example of a JVassa very abundant 

 at Arccife in Lanzarote, and closely allied to N. miifabilis (L.). 



