INDEX. 1 343 



prettiest specimens obtained, 189; minimus, 185; obsoletus, 179; 

 opercularis , described, 146, 169, 170, 171, 172, 173, 187, 188 ; 

 Habitat, 171, 172, 173; varieties of elongata, lineata and tumida^ 

 171; called "clams" at Frith of Clyde, 172; and "frills" or 

 " queens " on the South Devon coast, 172 ; " squinns " on the 

 Dorset coast, " vanneau " or ' Olivette " in the North of France, 

 172 ; the fry of, 172, 173 ; how animal of the adult may readily be 

 known, 173; parvus, 179; pygmaeus, 185; pusio, 160, 162; 

 described, 162, 163; Habitat, 163, 164, 165; fossil, 163, 164; the 

 foot not atrophied in the adult, 164; the byssal sinus of, 164; is 

 the ostrea sinuosa of Gmelin, 165; the .P. distortus of Da Costa, 

 165 ; the P. midthtriatus of Poli, and the P. Isabelle of Macgilli- 

 vray, but not of Lamarck, 165 ; rimulosus, 182 ; reticulatzis, 183 ; 

 Septemradiatus, 162, 173, 176; described, 173, 174, 175, 176; 

 var. alba Dumasii, 175; Habitat, 175, 176; Simtlis, 160, 183 184, 

 185, 189; described, 183, 184; Habitat, 185; Striatus, 179, 181, 

 183; described, rSi, 182; Habitat, 182, 183; Testa, 179, 181, 

 182, 183; Tigennus, 176, 179, 181; described 176 to 179; var. 

 costata, described, 177, 178; Habitat, 178, 179; varius, 165, 200; 

 described, 165, 166; var. purpurea, 166, and P. niveus, difference 

 between, 168 ; Vitreus, 185. 



Pectenidce, The (Lamarck) 139, 189; described, 159, 160; British, 160. 



Pectinated, 179. 



Peduncle, 132 (Pes, the foot.) The stem by which the animal is 

 attached to wood. 



Pegxvell Bay, 211. 



Pelagia (or deep sea oysters) 44. 



Pellworm, The Island of, 645. 



Pelorides, 46. 



Peloris, 151. 



Peningtoul, Establishments of MM. Eden and Fardin, at, 550. 



Pennant, " British Zoology," cited 57, 179. 



Pennel, Mr. Cholmondley, 117, 390, 395, 397, 400, 401, 403, 405, 

 409, 410, 412, 414, 419, 422, 438, 448. 



Peponnet and Tripota, MM., 569. 



Percy, The wonderful effects of eating oysters, 317. 



Perna, 190. 



Periwinkle, The, 200, 206. 



