INDEX AND SYNONYMY. 303 



PAGE. 



Obligata (Littorina), Say. Journ. Phila. Acad.. ii, p. 241. 



L. rudis, Montg. var. ....... 241 



Obliquus (Modulus), Ad. Zool. Proc., p. 204, 1850, . . 262 

 Obscura (Planaxis), A. Ad. Zool. Proc., p. 271, 1851. 



? = P. sulcatus, Born. . . 276 



Obsoletus (Planaxis), Menke. Zeitsch. fiir Malak., p. 170, 



1850. = P. nigritellus, Forbes. . . . . . . 278 



Obtusa (Isapis), Carp. 2d Report, 142, 273 



Obtusata (Littorina), Linn. Syst. Nat. Ed., xii, p. 1232, . 2f>2 

 Obtusata (Littorina tenebrosa), var.), Midd. Mai. Ross., ii, 



p. 63, t. 8, f. 1-5. = L. littoralis, Linn 242 



Obtusatus ( Modulus), Phil. Conch. Cab., ii, 1846. 



= M. tectura, Gin. var. ....... 260 



Olivacea (Cithna), Verrill. Conn. Trans., vi, p. 185, t. 29, f. 



5, 1884, . . . . 269 



Orbignyi (Fossarus), Fischer. Jour, de Conch., 256, 1864. 



= F. sulcatus, Wood. . , . . . . . .271 



Ovoideus (Fossarus), Gould. Zool. Proc., 1856, . . . 27-'5 



Pagodella, Swainsoii, 219, 351, 1840. ^ Tectarius,Val. . 231 

 Pagodula (Alaba), A. Ad. Ann. & Mag., x, p. 297, 1862, . 282 

 Pagodus, Gray. Beechey's Voy., 141, 1839. 



= Tectarius, Val 2:-',l 



Pagodus (Turbo), Linn. Syst. Nat. Ed., xii, p.' 1234, . . 25(> 

 Pallescens (Littorina), Phil Zool. Proc., p. 142, 1X45. 



r L. iilosa, Sowl) 244 



Palliata (Littorina), Say. Journ. Phila. Acad., ii, p. 240. 



= L. littoralis, Linn. var. ....... 242 



Pallidula (Lacuna), DaCosta. Test. Brit., t. 4, f. 4, 5, 1778, . 2<>5 

 Pallidula (Lacuna), Meyer & Mob. Kieler Bucht., p. 25, 



1872. = L. puteolus, Turt 2(>5 



Pallidus (Turbo), Donov. Brit. Conch., t. 178, f. 4. 



= Lacuna crassior, Mont. . . . . . . 267 



Paludinella (Littorina), Reeve. Conch. Icon., f. 84, 1857, . 255 

 Papillosa (Littorina), Lam. Anim. sans Vert., vii, p. 32. 



= L. bullata, Martyn 257 



Parcipictus (Fossarus), Cpr. Ann. & Mag., xiii, p. 476, 1864, 274 

 Parva (Cochlea), DaCosta. Brit. Conch., 1798. 



= Lacuna puteola, Turton. . ...... 2(>"> 



Parvula (Lacuna), H. Martin MSS. Monts. Conch. Medit., 



109. = Megalomphalus azonus, Brus. .... 268 

 Parvula (Lacuna), Yelain. Archiv. Zool. Exper., vi, p. 113, 



t. 3, f. 11,12, 1X77, 270 



Parvula (Littorina), Phil. Zeitsch. fiir Malak., p. 149, 1848, . 255 

 Parvula fRisella), Dkr. Mai. Blatt,, viii, p. 42, 1862. 



= R. tantilla, Gld. var 2IJ3 



Patula (Fossarina), A. Ad. & Angas. Zool. Proc., p. 425, 



1863, . . 27() 



