492 



Buccinum tessellatum, BorySt.Vincent(as=w2#cw^to)in Encycl. 

 Method. Vers, pi. 403. f. 3. 



Dolium fimbriatum, Sowerby, Genera Shells ; Reeve, Conch. Syst. 

 pi. 264. f. 2 ; Conch. Icon. Dol. f . 3 b (not 3 a), 



Dolium Minjac, Deshayes, ed. Lam. (possibly). 



Although the Minjac of Adanson (Seneg. pi. 7. f. 6) has been 

 usually identified with this easily distinguished species, the account 

 (p. 109) of its colouring, suture, &c, scarcely harmonizes with its 

 peculiarities. The D. Minjac of Deshayes is said to be at least five 

 inches long, to have a channelled suture, and fifteen ribs upon its 

 body-whorl. 



Dolium perdix, Linnaeus. 



Tesan, Adanson, Seneg. p. 107. pi. 7. f. 5, probably. 



Buccinum perdix, Linn. Syst. Nat. chiefly ; Gmel. Brug. and Dillw. 

 in part ; Mont. Test. Brit. p. 244. pi. 8. f. 5 ; Wood, Ind. Test, 

 pi. 22. f. 3. 



Dolium perdix, Martini, Conch, hi. f. 10/9 (not 1080) ; Green, 

 Alb. Instit. p. 132, probably; Kiener, Coq. Viv. Dol. pi. 5. f. 9. 



Perdix reticulatus, Montfort, ii. p. 447 (execrably). 



"Variety. Dolium rufum, Blainv. Diet. Sc. Nat. liv. p. 503. 



Fry. Helix sulphur ea, Adams, Contrib. Conch. 



The variety rufa is rufous within and without, is of a peaked 

 oblong shape, with the turns of the spire, which is more than half 

 the length of the aperture, more than half as high as their breadth ; 

 the suture is very oblique. 



The more solid American examples, in which the ribs are narrow 

 (Knorr, Vergn. iii. pi. 8, f. 1), pale, prominent, and irregularly 

 tessellated by small concave-fronted brown spots (the sulci being 

 decidedly broad), are easily distinguished from the oriental specimens 

 which alike bear the name of Partridge Tuns. 



Cochlea pennata, Bumphius, Thes. Cochl. pi. 27. f. C. 



Buccinum perdix. Linn. Syst. Nat. in part only : Mus. Ulric. ; 

 Brug. and Dillw. in part. 



Doliumperdix, Hanley, Young, Conch. ; Beeve, Conch. Icon. Dol. f. 9. 



I am not prepared to assert the specific distinctness of the Indian 

 shell, however much the idea may be favoured by the surmised laws 

 of geographical distribution ; nevertheless matured individuals of the 

 two forms can, for the most part, be easily distinguished. The 

 latter seems more intensely rufous, with more sharply defined (and 

 usually lunate) linear white markings, the ribs always flattened, and 

 generally fewer, their intervals pallid, extremely shallow, and never 

 half so broad as the ribs ; the spire, which is rarely, if ever, even one 

 third the length of the aperture, occupies a much smaller propor- 

 tional area ; its volutions, which are less rounded, are rarely encircled 

 by more than six belts. The shape, moreover, is more produced 

 than in the variegated West Indian specimens, and the body is more 

 contracted posteriorly. The outer lip more conspicuously ascends 

 the penult whorl ; and the pillar enamel is, apparently, more copious. 



