Miscellanea . 313 



M. Brongniart in the last few lines of the quotation from his work 

 at the head of this subject, for I find some of the largest stems 

 perfectly smooth and the smallest occasionally striated. The sheaths 

 are rather coarsely striated, and terminate in thin, flattened leaves, 

 the midrib of which is scarcely discernible. In the weeping or 

 downward curved branches the leaves are completely reflexed so as 

 to point upwards, and, according to the position of the stem, are 

 either reflexed, expanded, or lying straight up against the stem. 

 The stems vary from 3 to 7 lines in diameter. 



Common in the white soft shale of Mulubimba, N.S.Wales. 



Phyllotheca Hookeri (M'Coy). PI. XI. figs. 4, 5, 6, 7- 

 Sp. Char. Stem simple, coarsely sukated and ridged longitudinally; 

 sheaths v e ry large, loose subinfundibuliform, each sheath extend- 

 ing from one articulation to the next, so as to conceal the stem ; 

 leaves about twice the length of the sheaths, thick, narrow, and 

 with a strong, prominent midrib. 



This species is easily known from the two former by its great 

 loose sac-like sheath, completely concealing the stem (see PI. XL 

 figs. 4 & 5), its long, thick, strongly ribbed leaves (see PI. XI. 

 fig. 6), and by its stem when stripped of its sheath being coarsely 

 and regularly sulcated, precisely as in the Calamites Cistii (see PI. 

 XI. fig. 7)- Although abundant, I have never seen a trace of a 

 branch. Some of the flattened stems attain a width of two inches. 

 Common in the sandstone of Clark's Hill, in the siliceous schists 

 of Arowa, and in the shales at Mulubimba, N. S. Wales. 



ZOOPHYTA. 



Stenopora crinita (Lonsd.). 

 Very abundant, forming globose masses five inches in diameter, 

 with a mammillated surface like that of the Ceriopora verrucosa 

 (Gold). In the sandstone of WooUongong, N. S. Wales ; also in 

 the sandstone of Darlington ; more rare in calcareous beds at Black 

 Head, N. S. Wales. 



Stenopora ovata (Lonsd.). 

 Common in Darlington sandstone, N. S. Wales. 

 Stenopora To.smaniensis (Lonsd.). 

 Net uncommon in the sandstone of Darlington, N. S. Wales. 



Fenestella ampla (Lonsd.). 

 Common in the sandstones of Muree, Bell's Creek, and Loder's 

 Creek, N. S. Wales. 



Fenestella fossula (Lonsd.). 

 Common in the sandstone of Muree, N. S. Wales. 



Fenestella internata (Lonsd.). 

 Common in the sandstone of Bell's Creek and Darlington, N, S. 

 Wales. 



Fenestella undulata (Phil.). 

 Rare in the shale of Dunvegan, N. S. Wales. 



Fenestella, 

 Two species closely resembling the F. antiqua (Lonsd.) (the 



