53 



This species bears some resemblance to T. eo.rawim. but that is a 

 small species, depressed convex on the ventral siile, which alone is 

 sufficient to distiiisjuish it. Indeed tliere may be some doubt about 

 this species being a true Ti'iiniocJiiliix. but it scnns, at least. 1i> tui 

 nearer related to that genus tliaii to any otluT. 



Found in tlu' Kaskaskia Cxnuii), ou Fish Creek, in (ireene cdunty, 

 Indiana, and now in the collection of Wm. F. E. (lurlev. 



SUBKINGDOM CCELENTERATA. 



CLASS ANTHOZOA. 



Subclass ZOANTHARIA. 



Family CYATHOPHYLLIDJ3. 



AMPLEXrs (?) ROCKFORDEXsrs, II. sp. 



PIdIc II I. Fi'i/. -•'■--'. .s/(/(' i:i('ir; Fuj. '?6*, I rnnarcvxc sectian. 



("orallum medium size, simple, elongate, somewhat obconoidal, 

 more or less twisted or curved. Epithecal crust very strongly de- 

 veloped, entirely covering the septa, and bearing numerous spines 

 irregularly scattered over the whole surface. 



A transverse section shows twenty-eight septa that I'eacli about 

 one-third of the way to the center. 



Our specimen does not show the calyx, an<i we Iniye no knowledge 

 of the tabulre except the transverse section shows a solid center in 

 the corallum. The constrietions. if any exist, are covered by the 

 epitheca. 



\^'e are not <'ertain tinit this species belongs to Amplexus, but it 

 is certainly a (lyathophylloid coral, and the solid ceider indicates an 

 Amplexus; but if there are no constrictions it belongs elsewhere. 



The remarkably thick, wrinkled, and spine-bearing epithecal 

 crust will serve to distinguish it until more is known of tlie internal 

 structure. 



Found in the Kinkerhook (Ironp, at Kockford, Indiana, and now 

 in the collection of Wm. F. E. (lurley. 



