oO. 
Ocinebra, xv., 37. 
aciculata, xv., 37. 
erinacea, xv., 37. 
Octopoda, vii. 
Octopodide, vii. 
Octopus, vii. 
vulgaris, vii. 
Odostomia, xx., 52. 
acuta, 53. 
conoidea, 53. 
cylindrica, 53. 
decussata, 54, 
diaphana, 54. 
eulimoides, 53. 
insculpta, 54. 
Lukisi, 52. 
nivosa, 53. 
obliqua, 54. 
pallida, 53, 
plicata, 54. 
spiralis, 55. 
turrita, 53. 
unidentata 53 (bis). 
Onchidiide, xi. 
Onchidiella, xi. 
Opisthobranchiata, xii., 27. 
Ostracea, xxvi., xxviii. 
Ostrea, xxviii., 66. 
edulis, 66 
var. hippopus, 66. 
maxima, 68. 
opercularis, 67. 
sinuosa, 67. 
var. lineatus, 67. 
», Audouinii, 67. 
varia, 67. 
Ostreidsx, xxvi., xxviii, 66. 
Otinidee, xi., 20. 
Ottna, xi., 20. 
otis, xi, 20 
Ovula, xvi, 38. 
patula, xvi., 38, 
P. 
Paludestrinide, xviii. 
Paludestrina, xviii., 46. 
similis, 46, 
rostrata, 95. 
Pandoride, 
XXxi., 95. 
XXVi, -XXviil., 
Patella, xxiii. 
athletica, 61. 
fluviatilis, 20. 
greca, 60. 
lacustria, 20. 
oblonga, 20. 
pellucida, 61. 
testudinalis, 61. 
vulgata, xxiii., 61. 
var. depressa, 61. 
Patellide, xxiii., 61. 
Patina, xxiii., 61. 
cerulea, xxiii. 
pellucida, xxiii., 61. 
var. levis, 61 
Pecten, xxix., 67. 
maximus, 68. 
opercularis, 67. 
var. Audoninii, 67. 
> linearis 
pusio, 67. 
trigrinus, 68, 
varius, 67. 
Pectinibranchiata, xiv., 32. 
Pectinacea, xxvi., xxix. 
Pectinids, xxvi., xxix., 67. 
Pectunculus, xxviii. 
glycimeris, 64, 
