MITRULARIA. 139 



M. TECTUM-SiNENSE, Lam. PL 43, figs. 11-74. 



Whitish, racliately striated or nearly smooth, with concentric 

 lamellre, free at the edges. Diam. 1 inch. 



Philippines. 



The well-known " Chinaman's hat/' M. scabies, Reeve (fig. 74), 

 is a synonym, and connects with varieties of M. equestris. 



M. RUGULOSA, Dunkcr (unfigured). Swain's Isl. 



M. LACTUCACEA, Rocliebrune (unfigured). Senegambia. 



INDEX AND SYNONYMY. 



Aberrans (Calyptraea), C. B. Ad. Panama Shells, 330. 



= Anomia. 

 Acrocnlia, Phillips. Palseoz. Foss., 1841. 



= Platyceras, Conrad, . . . . . . .107 



Actita, Fischer de Waldheim. Advers. ZooL, iii, 1825. 



= Capulus, Montf. . . . . . . . .105 



Aculeata (Calyptrsea), Reeve. Conch. Icon., xi, fig. 31 a, 6, 



1858. = Mitrularia equestris, Linn., var. . . . 138 

 Aculeata (Patella), Gmel. Syst. Nat., 3693, . 112, 127, 129 

 Acuta (Crepidula), H. C. Lea. Am .Jour. Sci., 1 ser. xlii, 



108, t. 1, f. 4. = C. convexa, Say. 

 Acntus (Hipponyx), Quoy. Toy. de 1'Astr., iii, pi. 72, 35, 



36. = H. australis, Quoy, 136 



Adamsii (Calyptrsea), Reeve. Conch. Icon., xi, sp. 7, 1858. 

 = Mitrularia equestris, Linn. . . . . . .137 



Addisonia, Dull., 1882, 107 



Adolphan (Crepidula), Lesson. Toy. de la Coq., ii. 391. 



= C. dilatata (Crepidula), Lam. . . . . .127 



Adspersa (Crepidula), D linker. Mollusca Guineensis, 34, 



1853, . . 125 



Adunca (Calyptrsea), Sowb. Tank. Cat., app. 7, No. 82^, 



1825, 128, 129 



Albida (Patella), Donovan. Brit. Shells, iv, t. 129. 



= Calypt. Sinensis, Linn. 120 



