DEVONIAN ROCKS OF CANADA WEST. 117 



Affinities of S. Hisiiigeri. — Edwards and Haime have described 

 two species from Ohio, collected in rocks of tlie age of the Onondaga 

 and Corniferous limestones, which appear to be closely allied to this ; 

 the following are their descriptions : 



*' Syeingopoea Yeeneuilli. — Corallites long, distance between 

 them twice or thrice their diameter, sub-flexuous and angular at the 

 points of the origin of the tubes of connexion ; these are distant two 

 or three millimetres ; diameter of the corallites two-thirds of a milli- 

 metre." — Devonian: Columbus, Ohio. {Polypiers Fossiles, ^.2^Q.) 



" Steingopoea Cleviana. — Corallites slightly flexuous, distant 

 once or twice their diameter, which is two-thirds of a millimetre." — 

 Devonian : Carolton and Dayton, Ohio. ( Polypiers Fossiles, p. 295.) 



The first of these species is different from S. Hisingeri in the 

 greater distance of the corallites. The description of the second is 

 too incomplete to enable us to decide whether it refers to the same 

 species or not. The authors state that their specimen was imperfect, 

 and they were not certain it had not been previously described. 



STRHiTGOPGEA PEEELEOAlfS.* — (Billings.) 



Description. — Corallites, one line in diameter, sometimes a little 

 more or less, distant a little less than one line ; connecting tubes 

 half a line in diameter, and distant from one line to one line and a- 

 half, usually projecting at right angles, but sometimes a little oblique. 

 Epitheca with numerous annulations, generally indistinct, but under 

 certain circumstances of growth sharply defined and deep, so much 

 so as to give to the corallites the appearance of the jointed stalk of a 

 criuoid. The young individuals are produced by lateral budding, and 

 in one specimen the whole colony appears to be based upon a broad 

 lamellar foot secretion like that which forms the base of a Favosite. 



The distance of the corallites is usually about a line, but, like all 

 the other species, this one varies a good deal in this respect. "When 

 some cause has intervened to prevent their regular growth, they are 

 much flexed and consequently at times more distant than when they 

 have been disturbed. The connecting tubes on the same side of the 

 corallite are three or four lines distant, but generally on the other 

 sides one or two others in the same space occur, making the average 

 distance one line or one line and a-half. 



* Since the publication of the Geol. Reports of last year, I have ascertained that one of 

 Eichwold's species is called S. elegans, and have therefore changed the name of ours. 

 VOL. IV. K 



