Botany and Zoology. 415 
From the third region the dredge brought up fewer though no 
less interesting specimens, the chief of which is a new Crinoid, 
belonging to the genus Bouwrgueticrinus of D’Orbigny ; it ma 
7 
even be the species named by him 2. Hotessieri, which occurs fos- 
of 
; lates, are in prepara- 
tion and will be published by the kindness of Prof. ge ys the 
om- 
i. He) Dr. Leidy describes a large carnivorous reptile allied to 
rri 
> some hay . : 
on the two margins in part, and others having a lenticular section, 
c= te toa greater or less degree, in place of its angles, and 
therefore crenate on three edges in 
~ the genus Zelaps (Proc, Acad., p. 279), I said: “The genus La 
Ups belongs ta ths family Dinodontidie, which is characterized 
_,. ~_ by its compressed sabre-shaped teeth. It differs _ : 
“nat Dinodon in that teeth of the ane shave ae posterior ser 
. ges separated by a posterior plane.” This, then, | 
to the usage of iatabelihes, establishes the name of Dinodon for 
the truncate teeth, and Lelaps for the two-edged. 
