55 



Gl. ALVBOLITES (COBNITIS ?; HISTA\- (Nicholson;. 



(C<mit>:< '.) </ . Nicholson). Feb., 



' 'orallum ramose, the branches cylindrical, of a diameter of from a line and a halt' to 

 two line-, dividing dichotomously at intervals of about half an inch, but not an :i_r. 



( 'nrallites oblique to the surface, with exceedingly thick walls, ('alic, liiui\ minutf. 



about one-eiirhth of a line in their longest diameter, -uli circular. tran.-verseh oval, nr TO 

 triangular. level with the surface, and haviii'_ r the lower lip hardly nr nut at all pmmincnt. 

 Intervals between the calices proportionately very wide about half a line. FL-. ' 



At fir-t -i-Jit, thi- remarkable species ha< very mueh th. a] ; 

 ance of a (>ueh as 0. "r of the unc.-rtain tnrin 



Kdw. and II.) It is. however, di-tin- 



.ruished from the former hy the not prominent and not markedly 

 triangular caliees. and from the latter (which is almo.-t certainlv not 







an Alveolites) hy the fuet that the oorallitee an- arranged obliquely 



the -urface. 



.lit-,,, lit..-; .list, i us is readily distinguished from the other ramose form- 

 of the genus by the exceedingly small -i/.e <if the calice-. and the pi" 

 portionately -veat width of the intervals between them, and by the fact 

 that the caliees are level with the general surface, or nearly so. Then 

 is thu- produced the fallacious appearance that the corallitc- arc im- 

 bedded in an abundant cieneiieliytna. 



/. ' and /'"!/> -Rare in the Coruiferous Limeston 



Port Colborne. 





Km. 13. 



-iit nf .1 



, iKi'ur.d 

 t r..r[i"ii nut 



.'! roiu, 



12. AlA'EOI.ITKS RAMI'I n- \ N \< -!M ' -on). 



(Plate VII. Fi-. 3.) 



Ali-.oliti .-: fni/i'il"-" (Nicholson), fi -<i'n-n<;il MII<I,I-.',II, , I'eb., 1874. 



Corallum reticulated, composed of flattened sub-cylindrical or cylindrical >tem* from two- 



third- of a line to one and a half line.- in diameter, branching with ^re-it freijiien.-^-. and i'lter- 

 laciii'_ r to f'nrin a dn~c network, the meshes of which vary from on tn two lines in diameter, 

 ('nrallitcs very minute, about three in the space of a line measured diagonally, the ca!ice> very 

 -mall, oval or triatr_"ilar. -eparated by int.-r\ ils of rather more than a third of a line, and 

 about a sixth to an eighth of a line in their loii'_ r e-t diameter , Fi_r. 1 I. Q and //). 



Thi- -| ..... [ee represente in the Lrenu- A the a[ri-tnin,,-in_ /'. . in the 



.'nu- / It i- di-tin'_'ui-h'-d t'rnni I with which it i- -trueturall\ ni"-t 



elip-dy allied, not nnly hy the reticulate,! fl.rm of the cnrallum, but al-n \>\ the much more 



minute OOrallitea I' ditfcr< from .1. fa in formini: a network, iii tin- corillitc- \><-\\\^ 



more p-inntc. and in the fact that the calice- are distinctly ,-uh trian_Mil ar or $V( n t rianjular, 

 08 a i/encral rule. 



/. N'nt very nncnnimmi in the ( 'ornit'crou- l,ime-t ....... .(' 1'ort 



.- and l.nt i',. ( 'mi 1. Wainth et. 



-: \ ieh,,l-(in i. 



. Al.\ BOL1 i K 



(PlaU \ 1 1 Pig. I.) 



Ah-. ..lit. /;///, \ icl ' ' Feb., 1874, 



1 Tallinn n-t inih: i-d. enmpn-cd of c\ lindric il nr Bub Cylindrical *\>-\\i -, f mai two t-p t! . : 

 iine- in diameter, which hrancli di, hntp>mu -I \, IT tli" m >~l pn: b cf |o-, and 



in loriii an p.p.-n n-tu.irk. th" m --he- of which ar.- : 1 i'id 



\.ary in |eir_'th fr-m thr.e lin.-- to thr.-. ijinrter- of an inch A- in tip- pr> 'he 



n- tun: k i- not alwa\ - in a -in/l'- pi ne- and the IT iiiclii-- nften ,-., i|, -,-. .it th'- ii" . 



