distinct carinae. From 71'. / - to, Po/jflwra will be distinguished solely bj th- d.-t that 



the branches in the latter <_ r euus are united by distinct porifcr. m- or non-porr pi- 



ments. whilst in the former the braneh.-- -imply ana-tmnose or itm-eulate. 



McCoy states that no infundibuliiorm specie- ..t . had come under hi- n..ti.-.- . but 



I have seen such, and in tin - the edN are born bv the inner faeo nf the branche-< 



The following species of 7V/// - ra hu\.- .-ome under my notice in the <_Y>rnif.Tous Lime- 

 stone of Western Ontario: 



120. POLYPORA PULOHXLLA (NioholsOl 



Polypora pulchella i Nichl-'.n .. G /.!/,/,/,< ', . . April, 1871. 



Polyzoary infundibuliform or flabellate. ntt. n a'.tainini: a mn-iderab. 

 nearly straight, radiating from tin- ba-.-. and increasing in numb, r b\- bifurcation at in:- . 

 of from two to four Hues. About six bram-ln-- in tin- -puce of a .piart. r nf MI iueh. the d'un 

 tex of the branches being about one-forty-fifth inch, tin- inter-p hti\ H-.IT..W. r. I 1 



5epim< n 1 - nn the same plane a.- tin- outer surface of the polyzoary, depressed below the in- 

 surface, short, narrower than tin- branche-. and plae.-d at interval.- of abnut half a line apart. 

 Fent-trules regularly oval, half a line in length, and about a ijuarter nf a line broad, foiii 

 five in the -pan- nfa quarter ot an inch, alternate or sub-alternate in ,. 



upper or inner surface of the branches carries the pore- or e.-lls, three m\v- ..f whieh ne.-ur 

 on ev.-rv braneh. and sometime- four oppo.-ite tin- .ui-in of the di--.pim.-nt-. The cell- ap 

 tla-k .-hapt-d. Munetime- -lightly unei|iial in ,-ize : tln-ir mouth- rund ; those of tl 'ral 



row alteriiatiii'j with tin- lateral row-. I-' mm six to ei_'ht p.'P-- in the BpaOG of B line, nr 

 three to four in the length of each fcne-trule. Tin- reverse fa.-.- ..t 1 tin- j nl\/,,arv i- -m ""th nr 

 -triated. 



/'. y///A /,.//./ belongs to that -erti.in ..f /'. : u whieh 



the dissepimentfi do not carry pmv-. Tin ;,i \\hirh it 



is most nearly allied i- the /'. // - ' , .. ,,f 1'rmit. frmn th- - 

 L -up of Illinois, it is, however, readily distingui 



by tin- .jreai.-r development of the di--epimcnt-. th. pp>- 



pnrtimiate and ab-nlute width of the f.-ne-tni 



n of tine.- (instead of four) r.''. i!- ,,n earh braneh. 

 All in mens are fra-jim -ntary. but tin- -[ i. - nm-t have 



attained a large size, the rannel-shaped polyioary !ia\n. 



nlle example a diann-ter of three inehc-. 



Locality a ! . ( 'oiiuunn in tin- i r.'ii- 



d Lime-tone .if 1'ort < 'nlb.irn.-. and L.>t i',. Cmi. 1. Wain 1 ' 







In : I '! 



nl (P.M. ulii.-li tin 



'np- 



-,'.- I! 'J>I 



ll'l. l'"I.Yl'"i: \ II VI I I \.\.\ I'mut;. 



/ PI ii Pi - i. .; \ i - . \ . i i.. p. (80 



!' il ' , Vol. II., plate XXI, Fi i 



I'. iiti-dK -imilai in its characters to the pn bm dii! . 



lions ana the number of the rows of cells. Cttnocoinm formii Itlitt.i . the 



bra; ' whieh ra.i in the bn80, in. !it.-r\ a. 



lim- (., half an inch. The bran." 'Hind, nearly hail a line in width. BDOUl ' 



in th. -pur.- .,f a quarter .-I' ail inrh I': 1, imt mm. th 



nf an iin-h in width, ntt.n appi-arinir t" be little more than >-< line, -tin.' p..m' the 



branch) I >rly in l.-n-jth. and abmit ball in 



width abnut thr. in a .(iiart. r nf an in.-li t:. ' idinally, and t in 



the -puc. of two lim 'ir.-d trai - up..n piuicnl ' 



in t'niir ait. rnatin_' rnw- ii|..n tin- brain-he-, their apertures pum 



