termination of our species, is not ‘covered With mi- 
nute dots, as in the European fossil; and if a new 
name is to be applied to it on that account, it may be 
called 2. glabratus* M. Wahlenberg, has given 
the figure of a trilobite which: he: calls cawdatus, but 
ours cannot be mistaken for that species, to which — 
Brongniart has very judiciously wd the name of : 
2, meucronatus. id 
The conical eye-like protuberances on the head of 
this species, are very remarkable, and so much’ re- 
semble the reticulated eyes of the limulus, as to 
leave no doubt that they once contained the organs | 
of vision. | | 
Asapous Hausmanni.. Brongniart. 
Cauda rotundata; cute coriacea tuberculis mini- 
mis spinulosis tecta. a 7 a 
In De la Beche’s Geological Manual, there is a 
list, of the trilobites which have been discovered in 
the grawacke group of rocks. This list we have — 
given in our introduction. Among the trilobites he 
states that the Asaphus Hausmanni has been found 
in the United States; as we have not seen the ‘species, 
and presuming the author to be correct in his Jocali- 
ty, we give the pager description from Professor 
Brongniart. | EL ee 
“hile 
* Tn the cabinet of G W. rnbaehorechiaiein Bia, I have ex- 
amined a fine specimen of the A. caudatus, from Dudley, Eng- 
land, but could not perceive the minute dots on nthe. tail, as ib 
tioned ed Brongnmiart. | 
