obtain support by the comminution of vegetable substances, was also 
furnished ‘witha large prehensile tongue and fleshy lips, 10 seize and 
retain the pry and young branches ‘which constituted its ood. 
Among the many extraordinary deviations from known ao i 
ed by paleontology, there is not one more remarkable than th mot 
fication of the type of organization peculiar to the class of rept 8 “fl 
meet the exigencies'required by the economy of a lizard, placed under 
similar conditions with the colossal Edentata. of the tertiary periods 
and the herbivorous mammalia of more modern tim mes, ay: esigned to 
hold the same relative position in the economy ‘of natur 
‘From the recently. discovered*specimens, the author ata he has been 
able to determine that the portion of a lower jaw of a Saurian, with 
numerous fangs of teeth, described in his memoir in 1845, as probably 
that of a young lguanodon, belongs toa distinct genus ok the same 
family ; and he proposes to distinguish it by the name of  Regnosaurus 
aethinintonts ; the specific designation being a tribute of respect to the 
noble President of the. Royal. Societ 
2. Notice of a gennbe: A nie of gigantic we Sm in the Cabi- 
‘aylo gomery ' 
hh we Hea éver se een. a noti ANE ae we pypemedans : failed to 
give at the time of the donation. 
Dr. Taylor said, ‘that the specimen fromy which ise ‘cast was made 
was found in the blue fimestone ‘resting upon a stratum of cage 
*marlite’ clay,” about fifiy feet from the upper te ey 
limestone,.which limestone is said to be * equivalent of the T somshs rar 
New York and Silurian of England. 
he cast presents five or more portions of the’shield, the post-abdomen 
and other portions of the Isotelus which bedr the mostindubitable evidence 
of having belonged a trilobites of the most gigantic size on record, 
tofessor Locke, M. erneuil and other scientific gentlemen having 
visited my se concur this opinion. —(E am» indebted to ot imped 
Locke for the ¢ 
At the time of re finding the specimens, I also found portions of 
at least one ne different individuals of the same species, varying 
in size from one half an inch to six inches in length, proving, that the 
trilobites like She limulus were gregarious. In connection with this 
Specimien, | also found a most delicate and. beautiful ‘* Retepora,” -en- 
tirely new, which has been described and figured by my friend, John 
. Van Cleve, Esq., of Dayton, and called “ Retepora nitida.” ~~ 
: We have also received from - Dr. bed years ‘ago, _—- ite of 
