210 . VII. DELINEATIONS 



2. THE DESCRIPTION (Dcscriptio) delineates in 

 appropriate terms all the parts constituting the 

 essential form of the reliquium, according to their 

 number., figure, proportion, and situation. 



of the same tribe, whose originals have not been discovered. In 

 these fossils there is an essential difference of structure, by which 

 the genus seems naturally divided into two families the species 

 known recent being the most perfect examples of these divisions, 

 with which Naturalists are yet acquainted. The characters of the 

 families may be thus stated. 



* Stipite tereti, ramoso ; f amis saepius alternis : articu- 



lorum discis radiato-striatis : medula ex tubisf 

 filifennibus composita. Entrochi. 



|. Hi ad species fossiles foramen quinquelobum saepe 

 efficiunt, 



* Stipite angulato, ramoso; ramis verticillatis : articu- 



Jorum discis Stella quimquefida ft insculptis: me- 

 dula simplici tenuissima. Pentacrinus, 

 |f. Radiis, s%pe ellipticis, ex crenis compositis. 

 To these divisions, in our arrangement of reliquia, we have 

 ventured to add a third, for those fossils generally denominated 

 Caryophyllita A name, we may remark, which they cannot, 

 with propriety retain, as there is now an established genus of 

 worms under the title Caryophyll&us, to which the reliquia in 

 question have no relation. These bodies, it is sufficiently evident, 

 derive their form from some species of zoophyta, though no 

 recent animals of the kind have yet been discovered They un- 

 doubtedly approach the genus we have been endeavouring to 

 establish, somewhat in structure, but not sufficiently so to be 

 pronounced genuine Stylastra. There are no other Vermes, 

 however, to which they appear so nearly allied; and as the form- 

 ing new genera from fossil species alone is scarcely allowable, we. 



