294 
PATAGONIAN EXPEDITIONS : PALAEONTOLOGY. 
Cretaceous. 
Eocene. 
Oligocene. 
Miocene. 
Pliocene. 
Recent. 
c;6. Murex 
Subgenus : Phyllonotus 
hatched 
Miocene , . . 
Tropical seas 
57. Fusus 
F. hector, 
archimedis 
58. Fusus 
N. Jersey 
F. burdiga- 
torosus 
lensis, 
Europe 
i;q. Margi- 
M. faunula, 
nella 
Florida 
gracilior 
IV 
arginella bet 
a 
Miocene . . . 
North America 
60. Margi- 
% 
- ' I 
Marginella styria 
nella 
Pliocene . . . 
olivella 
North America 
61. Terebra 
Terebra sp. 
costellata 
(costellata) 
Europe 
62. Pleuro- 
P. monilis, 
toma 
Europe 
subaequalis 
63. Genota 
G. intorta, 
cuevensis 
Europe 
64. Drillia 
D. limatula, 
santacru- 
N. America 
zensis 
65. Borsonia 
B. delucii, 
patagonica 
66. Actason 
Europe 
A. semistri- 
semilaevis 
atus, 
Europe 
67. Bulla pat- 
B. glaphyra, 
agonica 
Europe 
68. Scalpel- 
S. solidulum, 
lum juli- 
Europe 
ense 
69. Balanus 
Bal. unguiformis, 
varians 
Eocene. . . . 
Europe 
| 
Among these 69 species available for comparison, we have the follow- 
ing relations : 
Cretaceous relations : 3 species = 4 per cent. 
Cyrtoma posthumum . Gryphcea cf. tarda. Scalpellum juliense. 
