390 Canadian Record of Science. 



have a " well-preserved corneous structure ;" and Whitfield 

 has shown that the lateral branches of Buthogra/ptus laxus 

 are articulated. Under a lens, the specimen from Inmost 

 Island shows no indication of corneous structure, and its 

 lateral ramifications are apparently continuous with the 

 rhachis. It would, therefore, seem to be the most prudent 

 course to refer it provisionally to the genus Chondrites. 

 Whether viewed with or without a lens, it has so many 

 characters in common with C cupressinus that practically 

 the only difference between them is, that the one has long 

 and undivided pinnae or lateral ramifications, and the other 

 short and much divided ones. 



CCELENTEKATA. 



Anthozoa. 

 Streptelasma robustum. (Sp. nov.) 

 Corallum simple, elongate conical, usually rather strongly 

 curved, though some specimens are not so much curved as 

 others, very large for the genus, attaining to a length of 

 seven inches as measured along the curve of the convex 

 side, to a height of nearly five inches, and to a breadth or 

 width of nearly two inches and a quarter at the summit. 

 In some adult or nearly adult specimens the sides are so 

 much compressed (perhaps abnormally so), that the con- 

 vexly arched region is obtusely angulated in the centre, 

 longitudinally; in some young specimens this region is 

 distinctly flattened ; but others are circular in outline in 

 transverse section, or as seen from above. Septa alter- 

 nately long and short, varying in number in large 

 specimens from 160 to 170 in all, the longer ones 

 extending to the centre at the bottom of the calyx. 

 Surface marked with transverse wrinkles and numerous 

 fine striae of growth in well-preserved specimens, but often 

 so much worn, apparently prior to fossilization, as to be 

 almost smooth. 



