THE ANNALS 



ASTD 



MAGAZINE OF NATURAL HISTOEY. 



[FIFTH SEKIES.] 

 No. 101. MAY 1886. 



XXXIV. — On a new Genus of Devonian Gorals, with De- 

 scriptions of some Species of the same. By H. Alleyne 

 Nicholson, M.D., D.Sc, Regius Professor of Natural 

 History in the University of Aberdeen ; and Aethuk H. 

 FOOED, F.G.S., late of the Geological Survey of Canada. 

 [Plates XV. & XVL] 



There occur in the Devonian formation of both Germany 

 and Britain certain types of Corals which have a close resem- 

 blance in general aspect to the species of the genus Chcetetes^ 

 Fischer. In some regions, as in the Middle Devonian of the 

 Rhine, these corals are sometimes very abundant. This is 

 the case with the singular coral described by Prof. Ferd. 

 Roemer under the name of Chcetetes stromatoporoides (Leth. 

 Palseoz. p. 459, fig. Ill), An allied form has been described 

 by Prof. Schliiter under the name of Calamopora crinalis. 

 To the same group must also be referred the coral described 

 from the Devonian rocks of Devonshire by Mr. Etheridge, 

 Jun., and one of the present writers under the name of Chce- 

 tetes Lonsdalei. Having recently had the opportunity of 

 making a microscopical examination of a very extensive series 

 of these forms, we have satisfied ourselves that they cannot 

 be referred to the genus Chcetetes^ Fischer ; and, indeed, that 

 they exhibit characters which distinguish them from any 

 clearly defined genus with which we are acquainted. We 

 propose therefore to found for their reception the new genus 

 Bhaphidopora^ with the following characters : — 

 Ann. (fc Mag. N. Hist. Ser. 5. Vol. xvii. 27 



