438 Zoological Society. 



vigatd ; spird valde depressd ; anfractibus planulatis, ordinate 

 spiraliter striatis ; ad peripheriam obtuse unicarinatd, subtiis stri- 

 atd; carina crenulatd ; ad basin subtumidd ; aperturd triangulari; 

 umbilico valde patulo, crenis tuber culatis subdistantibus armato. 



Hab. Bay of Magdalena, California ; in seven fathoms, sand. 



Cab. Belcher. 



3. Solarium perdix. Sol. testd conoided, tenui, Icevigatd, pallidd ; 

 anfractibus subtumidis, superriC cingulo unico divisis, spirm minute 

 plico-striatis ; ad peripheriam angulatd tricarinatd, carind medid 

 prominente, majore, creniferd; cingulo et carinis maculis rujis 

 subquadratis ornatis ; umbilico patulo, crenulis parvis albis cincto. 

 Alt. 6, diam. 14 lin. 



Hab. Ceylon ; north-west coast of Australia. 



Cab. Cuming and Hinds. 



Possesses the general contour of S. perspectivum, but is thinner ; 

 the whorls are slightly tumid, and furnished above with a flat smooth 

 girdle, ornamented with somewhat distant rufous spots. The most 

 prominent keel is characteristically covered with small tubercular 

 crenulations. When placed on its base the apex is much inclined, 

 and the general direction oblique. The umbilicus is somewhat less 

 patulous than in S. perspectivum, and neatly encircled with numerous 

 white and smaller crenations. The umbilical space is destitute of 

 ribs, folds, or keels, bearing alone the marks of the striae of growth 

 and a thin horny epidermis. 



4. Solarium quadriceps. Sol. testd orbiculato-discoided ; an- 

 fractibus quadriseriatim cingulatis ; cingulis tuber cutis quadratis, 

 planulatis, approximatis instructis, inferiore majore, et cum supe- 

 riore rufo picto ; ad basin tumidd, ared mediand radiatim plicatd ; 

 umbilico patulo, crenis magnis fuscis cincto ; ared umbilicali l<zvi. 

 Alt. 5, diam. 11 lin. 



Hab. Bay of Panama ; in five fathoms, among mud. 



Cab. Belcher. 



Very closely allied to S. granulatum, from which it will be found 

 to differ in the character and relative proportion of the granular gir- 

 dles. A single and perhaps rather small specimen was alone obtained, 

 which is somewhat more discoid than the above species ; four girdles 

 traverse each whorl, of which the inferior is the largest, and the 

 tubercles closely set, flattened, and obliquely square ; the umbilicus 

 is rather more expanded, and the marginal tubercles are of a similar 

 size, but coloured of a reddish brown. S. quadriceps is an American 

 shell, and S. granulatum an Asiatic. 



5. Solarium asperum. Sol. testd discoided ; spird rctusd; anfrac- 

 tibus superne planulatis, inferne rotundatis, ubique cingulis parvis 

 numerosis instructis ; cingulis tuber 'cutis parvis asperatis ; umbilico 

 valde patulo ; ared angustd, Icevi. Alt. 1^, diam. A\ lin. 



Hab. Straits of Macassar ; in eleven fathoms, coarse sand. 

 Cab. Belcher. 



A single dead specimen only was obtained, destitute of colour and 

 choked with sand. It is remarkable from its rounded base and its 



