TITLES, 15 



276. [Gray, J. E.] On the Head of the Genus Conus, Linn. (2) xii, 

 pp. 176-178 [1853, Sept.]. 



277. -^. On the Animal of Rotella, Lamk. (2) xii, pp. 179 & 180 

 [1853, Sept.]. 



278. . On the Teeth of the Pneumonobranchiate Mollusca. (2) xii, 



pp. 329-333, 478, figg. [1853, Nov. and Dec] 



279. . Descriptions of two new genera {Pfeifferia and Janella) of 



Land Molhisca. (2) xii, pp. 412-415 [1853, Dec.]. 



280. . Teeth of Testacellus and Olandina. (2) xii, p. 478 [1853, 



Dec.]. 



281. . On the teeth of Peronia and Otina. (2) xiii, pp. 73 & 74 



[1854, Jan.]. 



282. . On the Genus Latia. (2) xiii, pp. 237 & 238 [1854, March]. 



283. . On the Genera Yolutella and Cymbiola. (2) xiii, jjp. 346 & 



347 [1854, April]. 



284. . A Revision of the Arrangement of the Families of Bivalve 



Shells (Conchifera). (2) xiii, pp. 408-418, figg. [1854, May] ; (2) xix, 

 pp. 366-373 [1857, May]. 



285. ■ . On the Reproduction of a lost part of an Operculum, and of 



its probable Restoration when entirely destroyed. (2) xiii, pjj. 419 & 

 420, figg. [1854, May]. 



286. . Runcina hancocki. (2) xiii, p. 430 [1854, May]. 



287. . Additions and Corrections to the Arrangement of the Families 



of Bivalve Shells. (2) xiv, pp. 21-28 [1854, July]. 



288. . Description of the Animal of Cyclina sinensis. (2) xv, p. 77 



[1855, Jan.]. 



289. . On the anomalous Oyster-Shell described in the ' Annals ' for 



February. (2) xv, pp. 210 & 211 [1855, March]. 



290. . On Lottia zebrina and L. scurra. (2) xv, p. 238 [1855, March]. 



291. . On the Genus Assiminia. (2) xvi, p. 183 [1855, Sept.]. 



292. . On the genera of Mollusca, and on the Genus Assiminia in 



particular. (2) xvi, pp. 422-429 [1855, Dec.]. 



293. . Description of a new species of Sphoeriiim [/S*. pallidum] found 



near London. (2) xvii, pp. 465 & 466, fig. [1856, June]. 



294. . On a second new species of Sphcerium from the Paddington 



Canal. (2) xviii, p. 25 [1856, July]. 



295. . Notice of a New Subgenus of Helicinadoe. (2) xviii, p. 414 



[1856, Nov.]. 



296. . On the Abnormal Operculum of Polydonta elegans of New 



Zealand. (2) xviii, pp. 468 & 469, fig. [1856, Dec.]. 



297. . On a Monstrosity of Haliotis {albicans ?). (2) xix, pp. 348 & 



349 [1857, April]. 



298. . On the Nucleus of the Operculum of Cydostoma elegans. 



(2) xix, p. 350 [1857, April]. 



299. . On the Aftinities of Camptonyx, Benson. (3) i, pp. 406 & 407 



[1858, June]. 



