30 HALIOTIS. 



54. TLANATA, f. 74, Carpenter. — Testa orbicularis, sub- 

 ovata, complanata, minute squamoso-lirata, margiue circa 

 spiram expanse ; spira fere immersa, lata ; pallide viridis, 

 nigro variegata, labio interne angusto, planatissimo. — This is 

 the flattest of all the species ; it has a broad, immersed spire, 

 and is sculptured with tine, close, scaly ridges. 



55. EUBiGiNOSA, f. 71, Reeve. — Testa ovato-subquadrata, 

 convexa, concentrice regulariter undatim rugata, spiraliter 

 valide regulariter lirata, fulva, rubro late bifasciata, ad spiram 

 variegata: tuberculis foraminiferis parviusculis, tuberosis, 

 prominentibus. — The regular concentric wrinkles are crossed 

 by deeply cut ridges, producing a roughly symmetrical 

 effect. 



56. EXCAVATA, f. 21, 26, Lamarck. — Testa orbicularis 

 valide convexa, spiraliter lirata, liris granosis alternatis ; prope 

 suturam subconcentrice rugata, pallide fulva radiis obliquis 

 viridis fusco marginatis picta ; area marginali granoso-lirata, 

 transverse fasciis viridis fusco marginatis picta ; spira elevata, 

 subcentrali, rotunda ; apertura argentea, labio interne angusto 

 concave. — Eounded and very convex, with wrinkles near the 

 suture and spiral granulated ridges alternating in size. The 

 inner lip is narrow and slopes down into the concavity of the 

 interior. External colour, radiating flashes of green, edged 

 with brown on a pale buff ground. 



57. ALBICANS, f. 20, Quoy. — Testa ovato-suborbicularis, 

 sublsevigata, convexa, spiraliter tenuiter lirata, fulva, rufe 

 radiata ; spira lata, rotunda, anfractibus rotundatis ; ferami- 

 nibus parvis ; apertura pallide argentea, Igevi ; labio interne 

 arcuate, subconcavo. — A comparatively smooth shell of a buff 

 colour with obliquely radiating bands of reddish brown. It 

 is of a rounded oval, very convex form, and the holes are 

 small. 



58. cuNNiNGHAMii, p. 36, Gray. — Testa magna subro- 

 tunda, fulva subradiatim fusco rubescenti variegata, spiraliter 

 tenuiter striata, disco mediano subcemplanato, undulate ; 

 angulodorsaliprominenti, area marginali subexcavata angusta; 

 spira lata, subprominenti ; apertura argentea. — Large, rather 

 round fulvous, variegated with large patches of brown, finely 

 spirally striated; middle disc rather flattened, spire broad, 

 lather raised. This attains a very large size. 



