172 The American Geologist. September, i904 
conditions under which they were foniied before transporta- 
tion. 
From the pocket-hke character of the shell deposits as well 
as other characters of the material in which they are at pres- 
ent found, the idea that they have been transported or at least 
secondarily worked over by water, must, it seems, be accepted. 
The whole fauna as here given consists of 71 species and 
2 varieties, ten of these species having been added since pro- 
fessor Verrill's list. Of these Panopaea sp. and ^lesodesma 
deaurata (M'. jauresi) were added by Hollick; Caecum pul- 
chellum, Astarte quadrans, Cingula (Rissoa) aculeus, Solari- 
ella (Margarita) obscura, Skenea planorbis, Trophon (Fus- 
us) scalariformis, and Area pexata were added by Merrill, and 
an excellent specimen of Area ponderosa was found among the 
early collection of Mr. Scudder by the writer. 
In the last column of the table is given the range of the 
species either to the north or south. In some cases it is about 
m the middle point of its range and both letter^ are given, the 
one indicating the greater range being given first. In one or 
two cases the species is not now found living at this point and 
this fact is indicated in the column by repeating the letter indi- 
cating the range in parenthesis, as N. (N.) meaning that the 
species does not at present range south to this point in shallow 
water. 
Relations of the Fauna of Bed. No. i. 
At the present time there are forty species and varieties 
which have been identified from this lower bed. The one 
crustacean Eupagurus pollicaris is hypothetically referred to 
this bed by professor Verrill. The only specimen was found 
by Desor. Of the forty forms thirty-two have a decidedly 
southern range ; one other, the var. antiqua described by Ver- 
rill, is limited to this locality as far as known. Of the remain- 
ing seven forms with a northern range, two have a decided 
southern range as well, of the remaining five, three species are 
found rarely in this lower bed and much more commonly in the 
bed above, the other two remaining species being decidedly 
northern, one of them only now found at this point in deep 
water. Therefore ^yYii of the forms found in this bed would 
be found more commonly to the south of this point today. 
