272 BEAHMA.CEOTTJS AND CICEEOCEINUS. [May igOO, 



In the case of the other new genus described, not only were the 

 costals and distichals fully incorporated in the calyx, but they were 

 brought into immediate contact with the interradials ; an arrange- 

 ment not met with in Platycrinus, certainly not in Pleurocrinus (Platy- 

 crinus) rugosus, mentioned by Mr. Bather. The Author had in many 

 cases used the terms proposed by Mr. Bather, but in others he had 

 employed those in general use, which were also those of Wachsmuth 

 & Springer. It mattered less what a thing might be called than 

 that the same thing should always be known by the same name. 

 In matters of nomenclature it was becoming increasingly difficult 

 to keep abreast of the fleeting fashions of the time, and fixity in the 

 use of terms was fast becoming a crying need in zoology. 



