217 
Since my remarks on tlie Polyzoa of the Bowen River Coal Field were written,* 
I have succeeded in finding f tlie original specimens collected by the late Count P. de 
trzolecki, and figured by the late Prof. Morris in the work of the former, and am 
therefore able to form a much better conception of the species. 
Order-OYMNOLJIMATA. 
Sub-Order— CYCLOSTOMATA. 
Family— FENESTELLIDJE. 
Genus— FENJSSTELLA, Lonsdale, 1839. 
(Murohiaon’a Silurian System, p. 077.) 
Fenestelua eossula, Lonsdale, PI. 9, figs. 4 and 5. 
^'enestdla fussula, Lonsdale in Darwin’s Geol. Obs. Vole. Islands, 1844, p. 100. 
” >’ Lonsdale in Strzeleclii’s Phys. Descrip. N. S. Wales, &c., 1845, p. 209, t. 9, f. 1. 
” )> Dtheridge, Quart. Journ. Geol. Soe., 1872, xxviii. Pt. 1, p. 332, t. 2,5, f. 1. 
.. plehda (pars), Etheridge fil.. Cat. Australian Foss., 1878, p 43. 
.. sp. ind., Etheridge fil., Proo. R. Phys. Soc. Edinb., 1880. v., p. 279. 
Sp. Char. Polyzoarium iufundibuliform, curled on the upper surface, structure 
'ery regular. Interstices and dissepiments remarkably regular, fine, slender, or almost 
air-like, the former with a fine median keel, and branching dichotomously, but rarely, 
e Is veiy small, increasing to three rows below each bifurcation of an interstice, and 
foin three to four corresponding to each fenestrule in vertical series, one being 
sually placed opposite the end of each dissepiment. Fenestrules square-oval. 
6 Verse face usually striate granular. 
^ Ohs. In the “ Catalogue of Australian Fossils ” I included F. fossula as a 
ynonym of F. pleleia, McCoy, chiefly in deference to the opinion of Prof. L. G. de 
^ oniuck.J After examining the Strzeleckian type in the iVational Collection, however, 
support this view, and believe that F. fossula will prove distinct from 
•^netoy’s species. 
Ihe general appearance is quite different to that of F. pleheia. It is relatively 
smaller and finer, the interstices more closely packed together, giving rise to that 
.1 Pearance which suggested to Mr. E. Etheridge, F.E.S., the name of F. densa.§ There 
otal absence of the erect, rigid, and wiry appearance so common to F. pleheia. 
jjj, tlcscribing FI Lonsdale distinctly says, “ Celluliferous face internal,” 
exceedingly good specimens in the Mining and Geological Museum, Sydney, 
eurled and iufundibuliform ex])ausion to be so, and the branches only celluli- 
thre*^^ vows of zoecia vary from two to five, usually the former, but sometimes 
predominate. The increase, however, usually takes place on a branch about 
vidi;^ a'Dd the rows are invariably separated by keels or longitudinal dividing 
ges. Loth this and the succeeding species quite lack the rigid, wiry look of 
'^'‘Upora. 
allied +^*^^*^^*^'^^^^'^^*^*'***^**’ from the Salt Range, is very closely 
babit° i*^*lgivig from the fragments figured, but is perhaps of rather too large 
* Proc. R. Phys. Soc. Edinb., 1880, v., p. 273. 
+ In the Geological Department of the British Museum (Natural History), London. 
+ Eos3. Pal. Nouv.-Galles du Sud, 1877, Pt. S, p. 171. 
§^^uart. Journ. Geol. Soc., Ifi72, xxviii., p, 332. 
il Pal. Indica (Salt Range Poss.), 1885, Ser. xiii., Pt. 1, No. 5, p. 778, t. 88, ff. and 2. 
