OF CONCHOLOGY. 273 



Type Patinella Magellanica, Gmel. Plate, 15, fig. 24. 



Patella Magellanica, Gmel., Syst. Nat. No. 52, p. 3703, 1792. 



Gualt. Test., pi. 9, f. E. Martini, Conch. Cab. i, pi. v, 



f. 40, a, b. Lnm. An. s. Vert. ed. Desh. vii, p. 534, 



No. 26. Rve, Icon., pi. x, f. 19 a, b. 

 Patella fusca, Dillw., Cat. vol ii, p. 1047, No. 70. 

 Patella deaurata, Gmel., Syst. Nat., p. 3719, No. 142. Lam. 



1819, An. s. Vert., vi, p. 330, No. 25. lb. Ed. Desh. vii, 



p. 534, No. 25. Martini Conch. Cab. x, p. 168, f. 1616. 



D'Orb. Voy. Am. Merid. v, p. 480, No. 44. Gould, Expl. 



Exp. Moll., p. 341, f. 444, 444 a. 

 Patella ferruc/inea, Wood, Ind. Test., No. 32. Hanley's Ed., 



p. 186, No. 32, pi. 37. 

 Soft parts. Foot nearly circular, dark slate color, with a row 

 of leaf-like scalloped lappets all around, except below the head, 

 integument soft and spongy ; mantle yellowish, with irregularities 

 and patches of color corresponding to the ribs and rays of the 

 •shell margin, fringed with stout, cylindrical, pointed beards or 

 cirri, rather irregularly disposed in two rows, upon the thickened 

 portion ; they are purple at the base and yellowish at the tips. 

 Head small, rosy-white above, whitish on neck and muzzle ; ten- 

 tacles long, (quite short in alcohol,) tapering, curved, rather 

 bluntly pointed, yellowish white, with a purple stripe above, and 

 rather swelled at the bases ; eyes small on upper part of bases ; 

 branchiae lamellae produced, close-set, rather smaller on the ante- 

 rior portion, but not interrupted in front ; hood short. Muzzle 

 small, short, transversely oval ; mouth ditto ; disk bordered with 

 a double row of slender cylindrical papillce, radiately striate, 

 without a frill, indented below. Renal papilla subcylindrical, 

 distinct, not sessile on the anal, which is larger, with slender 

 subcylindrical papillae projecting from the orifice. Infra-anal 

 tubercle to the right, prominent, distinct, smaller than the anal. 

 Formula, ^ . 



' 3(1 + 1^-1-1-^+1)3 



Gould unites deaurata and Magellanica as varieties of one spe- 

 cies under the former name ; but if, as seems probable, the two 

 are identical, the latter name should be used, as it precedes deau- 

 rata, both in the Syst. Nat. and the Conchylien Cabinet, in both 

 text and plates. The latter work, however, not being binomial, 

 should not be quoted as an authority for specific names. Patella 

 ferruginea, Wood, according to Hanley, is identical with deau- 

 rata, and also P. fusca, Dillwyn, but not the fusca of Gmelin. 

 Gould separates /e/rw^mea, however, as a distinct species by the 

 animal. This genus diflFers essentially from Patella, as typified 

 by P. vulgata, in anatomy, external characters and dentition. 



