Botany and Zoology. 125 
rst appearance*and gradual in- 
crease of the order in its geological history. v. 
‘1, Notes on the Radiata in the Museum of Yale College, with Descrip- 
tions of New Genera and Species; by A. E. Vernii. (From the Trans- 
actions of the Connecticut Academy of Arts and Sciences, Vol. I, Part II, 
ip 
arms. It has the aspect of Solaster. Coscinasterias is an allied genus, 
which are long and slender, arising from a 
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| Echinoderms, except Holothurians, contained in the Yale College Museum, 
: rom the West coast of Central and South America. Most of the mate- 
th 
With four new gene 
the following : i 
gracilis, g: Astroph 
ruviana 
eed slerina modesta, Oreaster occidentalis, Mithrodia eyi, 
: inbotiadema coronaia (new genus), Astropyga venusta, Huryechinus 
Melina (=E. gibbosus Val. 2), Psammechinus pictus, Boletia viridis, 
Brissus 
pnehe Name, Ophiothela, is proposed for peculiar, small, six-rayed 
ebintians allied to Ophiothriz, of which this og is made a sub-genus. 
-Uhodiadema is allied to Diadema but has a spinose buccal membrane, 
a geminate pores, and hollow spines. Astroclypus is allied to Hncope 
aoe It differs from the first in having but four ovarial open- 
from Lobophora in 
os <_ Serera) changes in the nomenclature of known species are introduced, 
gona cf Which are as follows: Oreaster armatus M. and Tr. is made 
eee Patate genus under Gray’s subgeneric name, Widorellia ; ; 
pring Uh# fitst part of this article embracing the Ophiuroidea and Asteroidea was 
-—‘RéBlod and disrtnted in March and_April; the remaining signatures including 
a a@, ete, were not issued until June. sg eee age = 
