60 
flank. The ribs are more crowded. Also the persistently acute venter, 
smoothness, and catagenetic peripheral spiral. The last is not uncommon 
in various large Cardioceratoids. 
hjL = L2 Li 
Locality. On the west side of the point that bounds on the west the 
small bay on the southwest shore of the peninsula. 
Name. After my teacher, Professor James Perrin Smith. 
v\/hc>r'ls 
V 
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/ 
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- 
- 
M 
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1 \ 
- 
1 ' 
1 \ 
1 
y 
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1 . 
- 
O O.P 0.-4 0.6 
Geological Survey, Canada. 
Figure 5. Anacardioceras perrini sp. nov.; width of umbilicus (shown by a broken line) and 
thickness of whorls (by a solid line) of holotype correlated with number of 
whorls. 
Family, macrocephalitidae 
Genus, Lilloettia nov. 
The family is represented by two new genera of slightly later date than 
most of the group and corresponding in age to Catacephalites. Both are 
widespread in deposits of the same age in southern Alaska where they are 
associated with Cadoceras sensu lato. 
The young of Lilloettia have the ornament and something of the form 
of DolikephaliteSj but a smaller umbilicus. The ornament degenerates 
during late adolescence. Smoothness supervenes first round the umbilicus. 
