416 General Notes. [April, 
have been found at other localities, in the Lower Eocene, Among 
Echinocyamus subcaudatus of the tertiary of Antibes (Var), but 
which differs from that species in the constant position of its 
periproct and other characters; and Guwaltiera orbignyt, a typ 
remarkable for its ovoid, posteriorly truncated form, by the a 
rangement of its ambulacral areas, which are severed at two-thirds 
of their length by an internal fasciole, and above all, by the pro- 
tuberances which surround the peristome, and are pokaj” 
along the center of the posterior interambulacral area, tOr 
these strata echini predominate, and other fossils are eee Me 
only by a few mollusks. Mr. Thomas has recently studied t 
terrestrial and lacustrine tertiary and quaternary beds of vm 
stead of preceding it,as is the case in Europe. 
the Pliocene. 
antelopes, a sheep, a mouflon, a camel oe erg in dentition, 
preserves some resemblance to Hippotherium. 
MINERALOGY". nas givet 
AN INTERESTING MINERAL FROM Canapa.— The roi W 
a preliminary notice of a very interesting minera” h-white squa 
Ontario, Canada. It occurs as white or e glazed on Ù 
crystals, sometimes an inch in breadth, and 0 neared comes 4 
outside. They are nearly square prisms weer gcapolite 
the general appearance being that of a partly o The angles 
pointed out to the author by Professor E. S. pera ie! 
similar to those of sarcolite, the following rey The pine 
O, i-i, I. 2, 2-i, 2-2, 6-3, the last two he 
- 1Edited by Professor H. CARviLL Lewis, Academy of Natural 
delphia, to whom communications, papers for rev! 
ss roceedings Mineralogical and Geol. Section, 
1993- ! , a gA 
* =e 
he me: 
n 
ia AN 
p 
