132 



joined, the cavity of each communicating with that of the 

 one from which it springs; septa rudimentary or absent; 



tabulae curved. 



Aulopora serpens. Goldf. (Fig. 

 I."*.) (Petrefact. Germanise, p. 82, PI. 

 XXIX.) 



Distinguishing (,'hnracters. — Budding 

 somewhat below the ealices; one or 

 A^ikd&nZtVis two buds from each eorallite; anas- 



spirif&roides. From Sec • « n*j. r • i„ i 



s. Eighteen Mile creek, tomosing oi coralhtes, forming enclosed 





of various sizes and forms. 



r i< hi 



From a specimen in the Stu- 

 dent Palseontological Col- meSllCS 

 lection. Harvard University. . _ 



cat. 835. (Original.) Found on bracniopods m the Dennssa 



bed. at Section 5, and in the Athyris bed, at Section 7 (rare). 



Aulopora tub^eformis. Goldf. 



( Fig-. 1 (i. ) (Petrefact. Germ., p. 83, 

 PL XXIX.) 



Distinguish ing Ch u ra c ters . — 

 Large curved corallites, which are 

 enlarged at the mouth, budding 

 from near center of preceding cor- 

 rallite; no intergrowth of coral- 

 «t;u„f^7T;S s ; Htes, but occasionally a lateral 



Creek. Student Pala?ontoloerical ■■ ,-. , ,. 



Collection, Harvard University, (at. UUlOll OCCUl'S 1)V tile d'CCt ])OrtlOH 

 236. (Original.) . , ,, 



oi the walls. 

 Found in Avery's Ravine, four feet below the Trilobite 

 beds, on brachiopod shells (rare). 



Gents CERATOPOKA. Grabau. 



[Ety. : Ceras, horn ; poros, pore.] 

 (1899: Proc. Bost. Soc. Nat. History, Vol. XXVIII, No. 16.) 



Corallum compound, increasing by lateral gemmation; 

 ereci or prostrate, but never attached above the base; septa, 

 absent, or represented merely by vertical ridges or costae seen 

 on the outside of the corallum. Calyx deep, funnel-shaped, 

 thin-walled, and continued downwards in a narrower 

 tube, formed by the thickening of the walls, through the 

 addition, internally, of concentric layers of sclerenchyma. 



