122 
Lacuna—(continued ), 
corned, 
divaricata, 
Montacuti, 
neritoidea, 
pallidula, 
pertusa, 
striata, 
puteolus, 
vincta, 
LAMELLARIA, 
perspicua, 
tentaculata, 
Las@A, = 
rubra, 
LEDA, - 
caudata, 
minuta, 
pygmeea, 
LEPTON,  - 
nitidum, 
Lesea minuta, 
Ligula pretenis, 
prismatica, 
La, - 
aperta, 
bullata, 
elliptica, 
elongata, 
fragilis, 
hians, 
inflata, 
Loscombii, 
tenera, 
subauriculata, 
LIMAPONTIA, 
nigra, 
LITTORINA, 
Gronlandica, 
jugosa, 
littoralis, 
littorea, 
petred, 
neritoides, 
obtusata, 
rudis, 
sacatilis, 
INDEX. 
PAGE | 
LitTorina—( continued ), 
59 striatula, 
59 tenebrosa, 
Hy) vulgaris, 
60 | Lobaria quadriloba, 
59 | Lotico, = 
59 media, 
59 vulgaris, 
59 | Lomanotus, 
59 flavidus, 
83 | Lottia testudinalis, 
83 | Luctna, - 
83 borealis, 
17 Serruginosa, 
Ly, flexuosa, 
13 gibba, 
14 hiatelloides, 
14 spinifera, 
ilsy undata, 
15 | Lucrnopesis, 
15 undata, 
19 | Lurraria, - 
39 elliptica, 
34 vulgaris, 
7| Lyonsia, - 
8 arenosa, 
8 Norvegica, 
7| Mactra, - 
8| alba, - 
8 hoysit, 
8| compressa, 
8 deltoides, 
8 elliptica, 
8 lutraria, 
8 minutissima, 
104 piperata, 
104 solida, 
60 stultorum, 
60 subtruncata, 
61 triangularis, 
60 truncata, 
61 vulgaris, 
60 | Mangelia attenuata, 
60 brachystoma, * 
60. 87 costata, - 
60 Cranchiana, 
61 gracilis, 
