121 



other forms allied toScalites, are essentially Primordial and Lower Silurian. The two or three 

 specimens that I have seen art- -imply c,-i-ts, with mere fra'j-im-nt- 'f the actual shell adhering 

 to them, and it must at present remain doulitful to what generic group thej really belong. 

 Locality and /'"///>//</. Cornifcrous Lime-tom-, Port Colborm . 



CHAPTER VI. 



ANNELIDA AND CRUSTACEA OF THE CORNIFEROTS AM> HAMILTON FORMATION 



ANNELIDA. 



The remains of Annclides, though far from uncommon in the Devonian Rocks of On- 

 tario, are entirely referable, so far as I have seen, to the genera > : though 

 there are indications of the existence of senuine ,sv/-y,///,f or / ', nrultCB. < if the twy Bpeoieiof 

 - '-"//'/- which have come under my notice, one i- th.- S. oinplmlodc* of (loldfuss, a form 

 which occurs in the Devonian of Europe, whilst the other I cannot identify at pn -<-nt with 

 any recorded form. The irenus Orion i<i is apparently repr, - -nt. d by one - which 

 appears to be new. 



Genus SPIRORBIS (Daudin). 



Tube calcareous, solitary, coiled into a flat spiral, which may he di-xtral or sinistral. 

 and which is attached by one flat surface to some foreign object. The genu.- appear- to have 

 iced its existence in the Silurian period, and is well represented by Using -peeies in 

 seas. 



150. SPIRORKIS 



Serpula omphalodes (Qo\dfasa\ Petref. Germ I'l. l.XVIL. Fi-. :;. 



TuKe dextral. o}' t\vu and a half turn-, the outer side of each turn beiii'_ r .-"iii'-what tint 

 toned, and the Upper edge obtusely airjulated r -entlv rnuniled. "Itiann -t r. \ih-n adult, 

 aliiut a line and a ipiarter, height almnt one-third nf a line, the iliaineter <>(' the -'.ijlitly up- 

 turned mouth nearly halt a line. The la-t turn of the tube is much the largest, and a well 

 marked umbilieu- i, pre-'-nt, tlii.n-_ r h the turns are contiguous. Surfae,- -innntli, and without 

 rid-es or tubercles of any kind. 



/TWPv Tliei-c can be no hesitation in identil'\ iiiL r thi- 



^_ r t ti&M <'i ( 'S with the Kuropran form, with wliieh it aL'rie- IP. 



W V^ i'- form, -i/.i', and proportion-, ami in the ,-haracters of 



_(3 % ^-.^ tlie -iirfai-i-. It OOCUn in tlie ( 'orniferous l,inieston,' in 



' /' --, ,y|fc\ the form of carts of the tube, adli-rinj to tlie coral 



/ \2r "' J'i/'/o/ltmii Hi-Hi:, Hi, ,n, mi, . ami it i- common in the 



llamilt-n i" ! i|'. L'rowiiiL' upon lleliophyllum Halli, ' 

 , ti/>/ii///uin ' : , and 01 oaaionallj 



fera mt 



(..nii!ei-..u- l.im.--t.>iie. 



Lot 6, COO. 1, Waintl.-.'t. llamilion I'orm.ition. li.irt 

 li-tt'- Mill-. Ark. .na, To\vn-hip ol II Qqnet, and NVid.l.-r. 



If)). Si'iiini;i:i AI:KC,NI \icho|-..n). 



Tuhe iTiinut.'. -ini-irai -al. of two turn-, ri-unded. ami -om. \\ hat -l"lmi:ir . I 



to tin' i li-\ atioti and 1 U of tin- la-t turn. in- circular, u^uali\ turned upward-* 



DiameiOT of the entire spiral about a third^of a line, t\- >urfoe 



narked with !iiim--roM- v. ry el, -,i-l\ -ct '.\,\> -a,| 'ik, Iran rinlation- ,,r rid - which an* 



:. ,p- than th.ir own width \ minut-- umhiiieii- i- pre-ent. 



