% Botany and Zoology. — 125 
ropsis islandica (Nerita), Gmel. Adeorbis costuluta is placed in Cyelos- 
trema, Marryat. Mangelia turricula of our coast is regarded as distinct 
from the European Fusus turriculus and styled Defrancia scalaris, Mall. 
h . . 
are acknowledged over European synonyms. ; 
la candida is regarded as identical with P. ceca and arranged in 
Lapeta, Gray (Cryptobranchia, Midd.). Cemoria, Leach, is retained over 
Diadora, Gray.’ Onl Chitons, C. marmoreus and C. albus, are cata- 
logued, and the subgenera of Gray are adopted. Eight species of Cepha- 
-lopoda are found in the list, which seems a large number in view of the 
fact that only three are known to occur on the eastern coast of the United 
tes, The Greenland Zeredo is set down as “ 7’. denticulata, Gray, 
1850,” with 7. dilatata, Stimpson, as synonym; an error of date, the 
latter name havin 
coma) sabulosa, Spengler, according to Morch. 
nsculpia, Holis Bostoniensis, E. salmonacea, Rissoa eburnea, 
ere, ‘ 
€ will add a few brief remarks upon Liitken’s catalogue of the Echi- 
hodermata, Of this class we find 9 Holothuridz, 1 Echinus, 8 Aste ade, 
aid 11 Ophiuridas.. Cucumaria is retained instead of Pentacta, Goldtuss, 
: Notwithstanding the latter has priority. C. Korent, Ltk., nov. sp, 
Chemn., 1781. The names M. cinerea and argentata of our naturalists 
ie 
