63 



Fisn I ii-oRA (McCoy. 



Coralluui encrusting or fonnirr_ r lar_;e masses, composed of Ion-, simple, cylindrical, thick- 

 walled tubes, the mouths of which open a- -imple. equal, circular, smooth ed-ed cell- mi the >ur- 

 face. anl have numerous tran-ver-e diaphragm- at variable distance-; interval- between the tube. 

 occupied by a cellular network of small vesicular plati-s. or capillary tubules traversed by dia- 

 phragm-." illrit. Pal. Fo--. p. 1 1 i. The \n mi< ,' /' piv-cnt- do-e aHinities to the 



L- l/,linl,i, 5 and also to ''"., ora. From the former. Fistulip > i- di.-tin-ui-hcd by the 

 fact that the corallite< are destitute of -epta, whilst it ditlers from tin- latter -. -mi- in the ' 

 that the ccem neh\ ma i- regularly tabular, and that both the oorallitee and the inteivenin- 

 tubuli are tra\vr-ed by numerous and regular tabula'. 



One -pecie- i.f tin- -dm-, vix. /'. ' is (Billiuir>, ha.- b.'-ii reoogniaed u oocui 



in the l>''\miian rucks of Canada. 



74. FI>TI i.ii'uit.v ( 'ANAHKN>I> ( 15illin--). 



l-'iiLiil'ij - (Billings); Geol. Survey, Canad;', l!ep. li.r 1>.")7. p. \~'> : ' 



\ '>/,< (list, Vol. III., p. 4:. 1 " : and i n Jxiirii'ii, New Series, \'ul. 1\', p. 



Fig. 1. 



ralluin fiirinini: irre-ular masses, or, more emuuionly, lar-c undulating eru-i~ nr 

 pau.-i"ti>. t'l-Miu half an inch to an inch ur mre in thickness. I'ml-T >urface covered with a 

 thin concentrically-wrinkled epitheca. Corallites perfectly cylindrical, frum a third uf a liin 

 ti half a line in diameter u~ually about half a line distant fn>m one another, sometimes one 

 line or mon 1 . tln-ir mouths slightly projecting above the general -urlace. ( 'leneiichvma coin- 

 po-e-l of minute, polygonal or sub circular tubuli, of which from two to I'mir occupy the sp 



in' line. The number of tubuli separating the varimis COrallitefi '. aries from a sin-li' m\\ 

 up to three or four rows. Both the corallites and the intermediate tubuli of the coBnenohyma 



exhibit numi.-rou- ol086 -'-t and well developed tabul;e. 



FlStulipwra Cdnadensis occurs very abundantly in buth the ( 'orniterou- Liine-tMne and 

 th'- Hamilton formation of We-trrn ( Intario ; and though tin-re arc -ome sli-ht ditl'i-rrne, - 

 b.-tW'-rn tlii- cx.uiipi'". iVom the-e two i'm-iiiations. tlie.-e diHereiicc.- do not a]ipear to be of -^ - 

 jiiic value. /-'. C L cl".--ly allied to /'. ^fr]^ /,//.>( Me ( '\ . IVom the I'ppn 



Silurian llui-k-. th'- chief Or Only dbtinction of importance liein-- that the tubuli of the cu'ti 

 Q8 are i-^n-idi--ably larger iii the t'ormer than they are in the latter. 



Locality '""/ For Common in the < 'urnif.Tous Lint' M.IIM- ..(' I'.irt Ci'lb.-riK . 



Ridir'-wav. lla-ji-r-villi-. Ae. A'-o in the Hamilton formation at l;.rtlett.-'s Mil'. 

 Arkmia, Tuwn.-hip of llo-amiuet. 



'/. miS MiriiKl.lMA i I>e Koninck). 



1 rallum eoinpo-ite. I'onnin- bemispherloal, depres-t-d, ur pyrili.nn magsea of prismatic m 



indrieal cur.illit--s. Walls of t lie eurallitc-. perforated by mural pores. Talmhi- well d. 

 \i-loped. \c-iciiiar. Septa rcpi-c- ntccl l,^ vertical stri;e or rid'j> -. Kpithc.-a ci>nccntr;e:ill\ 

 wrinkled, with root like proloiiL'ati 



The coral- of the -en u > Mi'-iii liiii'i approxim.ite elu-ely in their 'jcneral chara.-tei - (,, 

 thu-e heluii-jinj t" / / i (li~tinjiii-lied. lio\\,-\, r, by tlie vesicular natur- 



t.ibulie, tli illy 1 !!_ r SUB of the OOraQiteS, and the fact that the septa are pn 



merely in the form of ~ti i 



Mr HilliiiL'- In- d- -crib, d ihree -p.-rie- ,.f I/ ',, n, v !/..,.!/. 



uid I/ . the Corniferoiu Limestone of Western Ontario. (M'tlc 



nilv ;he well known .!/. / a ha- e,,ine under my DOtlOe. 



M h 111:1 IM \ ' 'N\ i.\ \ (DV irbi--ii\) . 



Mi hel D'Oi '. i. I p. 1 ' ' . 



I//.//.//M" a ( Hillii. - lew 8ei Vol. IV. p. 112, 1 



ilium formin.' hemi-pli.-rieal or p\riform n. : 



of unequal -i/.e-, the lar_'-'r OIM-- from foiii to live liu-- in dianieier, ill- n, ;, m 01 i 



