THE ANNALS 



AND 



MAGAZINE OF NATURAL HISTOEY. 



[FIFTH SERIES.] 

 No. 40. APRIL 1881. 



XXVII. — Contributions to the Study of the British Palmozotc 

 Grinoids. — No. I. On Allagecrinus, the Representative of a 

 new Family from the Carboniferous Limestone Series of 

 Scotland. By P. Herbert Carpenter, M.A., Assistant 

 Master at Eton College, and R. Etheridge, Jun., of the 

 Museum of Natural History. 



[Plates XV. & XVI.] 



1. Introduction. 



We have for many years been in the habit of meeting 

 with a very small and peculiar Crinoid in almost every 

 collection of Scotch Carboniferous-Limestone fossils ex- 

 amined by us, in which attention has been paid to the remains 

 of the more minute organisms that inhabited the old Car- 

 boniferous seas. 



The systematic position of our fossils will be best discussed 

 at the conclusion of this paper, after we have described the 

 remarkable combination of characters which they present. 

 We believe them to represent the type of a new genus, for 

 which we propose the name Allagecrinus'^^ on account of its 



* dXXoy^, change. 

 Ann. & Mag. N. Hist. Ser. 5. Vol. vii. 21 



