Unrecorded Species of Fossils. 103 
FORM B. 
GENUs ? — SPECIES ? — 
This form consists of small spheroidal or irregularly 
shaped masses which present an exceedingly minute, yet 
recognisable radiating tube-like structure with faint 
indications of concentric lines. The zoarium (?) appears to 
have certain affinities to the genus Solenopora, Dybowski, 
but differs therefrom in the size and distribution of the 
corallites (?) and in several other points. It has also been 
compared with Girvanella and allied forms, but although 
poorly preserved, shows salient characters of difference. 
In examining and re-classifying the genera and species 
of Monticuliporoids in our collections, a similar form was 
observed in Micro-section 804, prepared by Mr. Weston from a 
specimen of Trenton limestone collected at Hull, Quebec, by 
Mr.W. R. Billings in 1882, alongside a species of Heterotrypa, 
probably H. solitaria, Ulrich, which designation Mr. A. H. 
Foord has attached to the slide holding the large polypary. 
Though more irregularly shaped in outline than the Quebec 
City specimen, the Hull one is evidently and easily seen to 
be congeneric and co-specific with it. Along the outer 
portion of the zoarium, the radiating tubes (?) or zocecia (?) 
are more Clearly visible, whilst the central portion is 
occupied by more or less regular (somewhat granular) net- 
work which resembles a reticulate structure. The dia- 
meter of the Quebec City specimen is ‘0146 of an inch. 
The matrix in which both the Hull and the Quebec 
specimens are preserved, is such as to obliterate such a 
minute structure as the zoarium (?) evidently possessed. 
When found imbedded ina finer grained rock, the exact rela- 
tions and true affinities of this interesting form will, it is 
hoped, be more definitely ascertained. 
