138 21ie American Geologist. March, 1895 
This consideration, togetlier with tliose above enumerated, 
ati'ord a fairly accurate determination of the j^oiinger cells 
and their j;-rouping about the initial cell. 
The develoi^ment of the coralhim in this species seems to 
be essentially the same as that of Focosifes forhesi. This is 
most apparent from figure li), plate viii. The initial cell pro- 
duces four buds from the dorsal side, as the second genei-ation, 
and ultimately becomes surrounded by individuals, which are 
not, presumabl}^ sprung directly from itself. In figure 17 
the normal number of buds belonging to the second genera- 
tion is apparently increased to five, but the extra cell, that on 
the extreme left, is so small in the comparison with the others 
that it seems justifiable to refer it to the third series. In fig- 
ure 18, on the contrarj", the second generation seems to be one 
short of tlie usual number. A large but unbroken individual 
on the left may reju-esent the missing cell. 
F(t rosifes- h erii isji/i eric i^s. 
The specimens here under discussion, from the the Cornif- 
erous limestone, are referred doubtfully to the species F. 
heriiispliericiis. Their small size precludes the possibility of 
comparing them definitively with the large coral masses which 
are classified largely on the form of the coralhim. In this spe- 
cies the development in its early stages proves to be identical 
with F.forhesl (plate viii, figure 16). The growth of the co- 
ralliim has not been followed to the stage where the initial 
cell is inclosed. 
Okseuvations. 
Perliaps the most noticeable features in the development of 
the corallum in Furosites is that the. initial corallite gives 
rise to buds which are (1) four in number, and {2) all on one 
side (dorsal ) of the corallite. Moreover, this tendency toward 
unilaterality is persistent and results in the fact that not 
until the fourth or fifth generation does the original individ- 
ual attain an inscribed or subcentral position. P'our species 
of FarosUe.s have been discussed, all belonging to the globose 
or pyriform variety. They come, moreover, from four dis- 
tinct horizons, yet the essential feature of their development 
appears to characterize the pyriform type of growth. The 
conclusion seems warranted that this feature remains constant 
throughout the genus in the hemispherical forms. The fol- 
