560 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [June 25, 



The septa are excessively thin and long, and correspond to larger 

 costse. There are five cycles, and some of the sixth, in six systems. 



The costse are close, unequal, transversely granular, and those at 

 the end of the long axis of the calice are the most prominent and 

 broadest. Inferiorly synapticulse exist. Epitheca rudimentary. 



Height of coraHum -f- Q inch. Length of calice lj 3 - inch. Breadth 

 -^j- inch. 



Loc. Limestone of St. Bartholomew's, "West Indies. 



In the collection of Mr. P. T. Cleve, Stockholm. 



5. Ttjebinoseeis antillabttm, spec. nov. PI. XXII. fig. 16. 



The corallum is turbinate and compressed. It has a sharp peduncle. 



The calice is elliptical in outline, very shallow and open. 



The septa are numerous, long, thin, and curved. The shorter join 

 the longer not far from the centre ; and these pass inwards thus in- 

 creased in size. 



' The costse are equal, longer than the septa, and smaller inferiorly 

 than at the calicular margin. 



The synapticulae are not abundant. The epitheca is banded. 



Height of corallum 1-^ inch. Length of calice 1 inch. Breadth 

 -j^j- inch. 



Loc. Limestone of St. Bartholomew's, "West Indies. 



In the collection of Mr. P. T. Cleve, Stockholm. 



6. Ttjrbinoseris Clevei, spec. nov. PI. XXII. fig. 17. 



The corallum is turbinate and compressed. It has a broad peduncle, 

 with the mark of a former attachment. 



The calice (section) is elliptical. 



The septa are numerous, very irregular in their course, thin, and 

 unequal. 



The costse are prominent, unequal, and distant, the wall being 

 visible between them. 



The synapticulas are large between the septa, but do not exist 

 between the costse. The wall is thick. There is no epitheca. 



Height of corallum T 9 ^ inch. Length of calice ^ inch. Breadth 

 j 6 - inch. 



Loc. Limestone of St. Bartholomew's, West Indies. 



In the collection of Mr. P. T. Cleve, Stockholm. 



7. Ttjebtnoseeis cycxoeites, spec. nov. PI. XXII. fig. 18. 



The corallum is very short, has a widely open calice, a small 

 mamilliform peduncle, and an almost horizontal wall. 



The calice is elliptical, and has a central fossa. 



The septa are small and crowded. 



The costse are distinct, mamilliform here and there; and some are 

 larger than the others. 



Height of corallum -f^ inch. Breadth of calice -^ inch. 



Loc. Limestone of St. Bartholomew's, West Indies. 



In the collection of Mr. P. T. Cleve, Stockholm. 



The resemblance of this form to one of the genus Palceocyclus is 

 most remarkable. There are no tabulse, however; and I have 



