Antediluvian oology and Botany. 275 
RADIA TA. * 
Stelléride, or radiated animals of a peculiar conformation, 
are divided into the four genera Comatula, Euryale (Astré- 
phyton), Astérias, and Ophiura. Of these we have only space 
to notice 
Astérias, or star-fish, which contains several fossil species, 
but of rather rare occurrence. They belong chiefly to the 
chalk, wherein have been recognised 
four species, one of which is shown. 
(fig. 67.) Thirteen fossil Astérize 
are described in the same work. The 
rarity of perfect specimens of Stel- 
léridz is ascribed to the proneness to 
decomposition of the membranous con- 
necting matter. Astérize have been 
observed in the oolites. In Vol. II. 
Astirias, approaching to Penta- p, 73. supra, we have figured an un- 
gonaster, Org. Ltcm., vol. iii. pl. i. 
fig.1. It is the dst: regularis of usually perfect one from the cornbrash. 
ea The figure given by Messrs. Young 
g eg y srs. 
and Bird, pl. v. fig. 5., from the alum shale, seems to be an 
Asteria. The fossil remains of Astériz are said to approxi- 
mate nearly to recent species; but this remark, probably, 
arose from the imperfect examination the subject has received. 
We have figured one of the recent Astériz (Vol. IL. p. 115.) 
communicated by Mr. Thompson. Dr. Fleming describes 
eleven British species. Recent. 
Ophiura. — Beautiful star-fish, of the genus Ophiura, have 
been noticed, by Mr. J. Phillips, in the marlstone of Yorkshire ; 
by Messrs. Young and Bird, 
in the alum shale (pl. v. fig. 
5.); by Mr. Miller, in the 
lias of Gloucestershire; and 
they appear, though very 
rarely, in the chalk. (fg. 68.) 
Crinodidea. — A consider- 
able portion of his second 
volume is devoted, by Mr. 
Parkinson, to this class of 
zoophytes, the result of which 
ects ee Phillips’s Geology of York- 1S, that of the two great fa- 
milies of coralloids, the En- 
crinites and the Pentacrinites, of which 25 species and frag- 
ments of numerous others abound in a mineralised state, 
* « Having the organs of sense and motion disposed circularly around a 
centre or axis.” 
