EOHINODEKMA. 113 



pinnules at their sides, and the sucking-feet have the form of 

 tentacles. 



The stalked representatives of this Order (714-732) are placed on 

 tables and brackets near the south door, and are worthy of being 

 particularly noticed for their fine preservation, size, and beauty. 

 The largest specimen of Fenfacrlnus decorus (717-719) was taken 

 on a telegraph-wire, to the covering of which the stalk of the Crinoid 

 is still attached. Metacrinus (726-729) is a more lately discovered 

 genus, which appears to be confined to the eastern seas. 



A few dried unstalked Crinoids are shown in Table-case 1 ; 

 these show the leading modifications of structure in the two great 

 genera Antedon (270-271, 276) and Actinometra (277, 278). 



AsTEROiDEA. — TMs Order comprises Echinoderms with a de- 

 pressed body of pentagonal or star-like shape, to the ventral surface 

 of which the ambulacral feet are confined. The rays are more or 



Fi?. 7. 



Comet form of Linckia. 



less elongate movable arms, with skeletal structures, which consist 

 of transversely arranged, paired, calcareous plates, articulated with 



I 



