51 
looked upon as the variety Oolclfmsi (PL 3, fig. 1). It has been repeatedly explained 
tliat Edwards and Haime regarded F. gothlaniica as an essentially Silurian species ; and 
eorre.sponding Devonian form was separated by them under the name of F. Ooldfussi. 
fie latter is stated by its authors to be distinguished from the former by its larger 
eorallites and more closely set mural pores. The size of the tubes (IJ lines), however, is 
frequently exceeded by typical Dpper Silurian examples of F, gothlandica, notwith- 
standing their more commonly smaller size. Under any circumstances, the size of the 
eorallites merely cannot be regarded as a character of the smallest specific value, while 
^0 mural pores exhibit an at least equal variability. Upon the whole, therefore, 
Ooldfussi, Edw. and H., cannot be satisfactorily separated from F. gothlandica, 
except as a mere variety. 
In the specimens here referred to, F. gothlandica, var. Ooldfussi, the diameter 
the ealices, as before stated, is about lines, in extreme cases reaching as much 
tfi'es. In one example there are four tabula) in the space of 2 lines vertical, 
whilst in another specimen the same number are contained in a space a little exceeding 
fiis. The examples collected by the late Mr. Daintree appear to be only portions of 
colonies ; but notwithstanding this, one of the specimens, a very fine one, measures 
da by inches, forming a more or less elongated depressed parallelogram. This 
cim of F. gothlandica corresponds in a striking manner with that met with in the 
erniforous Limestone of North America, a eai’eful comparison having been made with 
Co onios of the latter coral in the cabinet of one of us. 
We now come to four specimens, and possibly a fifth, which are regarded as 
erable to Facosites gothlandica proper, as understood by Messrs. Edwards and 
„ ^imo. They also bear a close resemblance to F. epidermata, llbmiuger, from the 
crniferous Limestone of North America, which is probably, after all, only another 
Variety of the widely spread and typicalU. gothlandica. In the colonics in question the 
ca lees are much smaller, scarcely ever exceeding 1 line in diameter, and frequently less, 
^1 st four tabula) appear, on an average, to be comprised within the space of 1 ^ lines 
lar ^ average, because we find, on the examination of a sufficiently 
ge number of specimens gathered from various quarters, and including those from 
ustralia, that there is every gradation between the two conditions in the size of the 
^ora ites and disposition of the tabula). It is on these grounds, combined with the 
^anahle disposition of the mural pores, that we propose to consider F. gothlandica in 
® Wide sense understood by Gloldfuss, before its subdivision by Edwards and Ilaime. 
Ill the fifth example, previously referred to as probably identical with the other 
G septal spines are well developed, (^Nicholson and Ftheridge fil.') 
Coll Eiver, a tributary of the Clarke Eiver {The late F. Daintree, 
of ^ British Museum, and Geological Survey of Queensland). A small fragment 
fromTu**'*'^*’ -F- gothlandica, has been more recently obtained by Mr. Jack 
fhe above locality. 
Genus — PAGHYPOFA, Lindstrom, 1873. 
(Otver. K. Akad. Forhandl., 1873, p. 14.) 
Bachtpoba mertdioitalis, Nich. and Eth. fil., PL 2, figs. 10-15. 
P. nerldionalis, Nich. and Eth. fil., Ann. and Mag. Nat. Hist., 1879, iv., p. 280. 
P- Char. Corallum ramose, of cylindrical branches, about 2 5 lines or 3 
for 
I'm, 
Corallites 
eot dividing dichotomously at comparatively remote intervals, 
as P°i.ygonal, with very thick walls, the diameter of which increases 
or ®outh is approached. Calicos hardly at all oblique, about a third of a lino, 
®G imes rather more, in diameter, oval, rounded, or irregular in shape, often 
