132 



joined, the cavitv of each eoinmunicatiii^' with that of the 

 one from whic-h it sju-in^s; septa rudiinentary or absent; 

 tabula^ curved. 



AuLOPORA SERPENS. Goldf. (Fig. 

 15.) (Petrefact. Germanige, p. 82, PL 

 XXIX.) 



Distinguishin<j^- Characters. — Bndding- 

 somewhat beh)w the calices; one or 

 Attached to a LTeZf!4C"^ two biids from each corallite; anas- 



spiriferoides. FromSec-, • <• it, ,. • -, -, 



tion 8, Eighteen Mile Creek, tomosmg oi coraUites, lormmg enclosed 



From a specimen in the Stu- i c • • i c 



dent PaiEeontoiogicai Col- nicshcs OI various sizes and lorms. 



lection. Harvard University. 



Cat. 235. (Original.) " Fonnd on brachiopods in the Demissa 

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



AlLOPOKA TrB.^^FORMIS. Goldf. 



( Fig. 1 (). ) ( Petrefact. Germ . , p. 88, 

 PI. XXIX.) 

 Distinguishing Characters. — 



Fig. 16. Aulopora tubaifortnis. 



Large curved corallites, which are 



enlarged at the mouth, bndding 



from near center of preceding cor- 



rallite; no intergrowth of coral- 

 Attached to Sp'irifer qranulosus : i*i-^„ 1^,,*- ^ „ , .;^,^ ,11,, ^ 1^+^,. ,1 



pieurodictyum bed. at Averys htes, but occasionaUv a lateral 



Creek. Student Palteontological . i j_i _._ J_• 



Colleetion, Harvard University. Cat. union occurs bv the erect i^ortion 



2.36. (Original.) ' 



of the walls. 

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

 beds, on brachiopod shells (rare). 



Genus CERATOPORA. Grabau. 



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

 (1899: Proc. Bost. Soc. Nat. History, Vol. XXVIII, Xo. 16.) 

 Coralliiiii compound, increasing by lateral gemmation; 

 erect or jirostrate, l)ut never attached above the base; septa 

 absent, or represented merely by vertical ridges or costse seen 

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

 thill-walled, and continued downwards in a narrow^er 

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

 addition, internally, of concentric layers of sclerenchyma. 



