37 





little above the base, and then continuing straight to the cup. The species is allied t 

 Senccnrnse (Billings), but is distinguished from this by its cylindrical form, and its -url 

 characters, and by the fact that its cells do not appear to be arranged in infundibuliform 

 layers. From 6'. (Goldfuss), it is distin_ui:-hed by its smaller si/.e <a- a rn 



its comparatively smooth epitheca, its shallower ami .-mailer calice, and it- cylindrical -hape. 

 It al.-o rarely exhibits the calicular gemmation which is so common in the latter specie-. 

 though this phenomenon can occasionally be observed. 



Lo<:<il!f>/ <>nd /'"/-///'///'"//.--Rare in the Corn if '.THUS Lime-tone of Port Colbortie. Y.-rv 

 abundant in the Hamilton Formation, at Baltic-It's Mills, near Arkona, Township of Bo- 

 quet. 



34. CYSTIPHYLLUM VESli [JLOBUM (Goldfu 



f'l/n.thojiJtyUt/in fcsicitlosum (Goldfuss), Petref. Germ. p. 58, PI. XVII. Fig. 5, and PI. 

 XVIII, fig. 1. 



!ij>It>/ll</. ' 'tloaum (riiilHpsi. Pal. /'-.NX., p. 10. PI. IV. tig. li'. 



Cydi/itti/H/iiit vesiculosum (Milne Edwards and Jules Haime), I'd. F>- . 

 Fill . j,. ir,2. 



L'il*l'ipll<jlbi 'In.-iiUil (McCoy), 7.W. /',;/. Fi>.*S., p. 71. 



( '< indium simple, elongated, turbinate or cylindro-conic, sometime- nearly cylindrical. 

 ;ceedingly strong, exhibiting inimcrou- tine encircling stria-, along with many v. 



marked annulations of growth, which -<>metini' - have 

 the form of circular wrinkles, but whi.-h at other time- 

 are sharp edged and imbricating. Xt uncommonly 

 .the folds of the epithcca ai My prolonged in the 



-m of wing-like extensions. Calice veiy deep, its 

 walls extraordinarily thickened in aged examples, and 

 it, Imttniii iisiiallv occupied b\ a gmnp o!' bull.T. 

 Si-j.tal stri;e in the interior of the calice usually very 



''net, but appearing to be made up of i 



1 vesicles. Internal structure \v-icular, 

 tlie r,f (lie \ bei ntral. and having a 



diameter of a line to a line and a half. Young indi- 

 viduals are truly simple, but older example- i- 

 by calicular gemination, a succession of vertically 

 rimpo-.'d corallite- being thus jiroduced. In :n 

 individual of a-.- 3126, tin- length 



the diameter ot'thc calice i- an inch and a ijuarlcr. and 

 the depth of the calice i- an inch and a quarter. 

 L- rge individual- occur, however, in which the len-th 

 must have been between halfa-foot and a foot. whi!-t 

 tin- diameter i- nearly three inch 



< lur specimens :\; \ tlv with iho-,- frjured by 



(loldfii-s in hi- -real work, and there cannot he th- 

 Smallest doubt u to their ideiititv. ( )nr specii 

 -how. al-n. in a ni(,-t marked manner, a feature which 

 nt in most Of the examples figured by (Joldl'n-- 



vi/., gro \vtli b\ mean- of calicular gemmation. ; 

 a- lia heen alrea.lv d'--cribi-d in // ' " //////. 



In thi- peculiar mode ,,|' i: the coral 



o\\ lli. and the call tlien 



more or le-> ohlit<-rate.l h\ tin- ext<-n-i n over it uf the 

 ejiith.-ca. Then a DOW bad i- throun up from the 

 calie i i';i\ direetlv ahove the ,,',) ,.ne. and this 



ti- coiitiini' ' <>w !'or a certain p-n-d. A third 

 hud i- then prndueed in a imilar manner, and a fourth, 

 fifth, or sixth mav be similarly produced, until the 



entire euralltim nrc. P( turl i- 



" i ii 



nate cups, or inverted COD< -. nipcrim] 







