Geology and Natural History. 373 
Il. Geotocy AND NaturAL History. 
1. The Hassler Expedition. Tornocaris Peircei.—In a letter to 
Prof. Peirce, dated Rio, Feb. 12, and recently published, Prof. 
was dredged in 45 fathoms about 40 miles east of Cape Frio. It 
is described as very like Serodis, with the marked difference, that 
the thoracic rings are much more numerous, and the a domen 
unmistakable and very striking, and that it can be referred to no 
one of the orders or families in Milne Edwards’ or Dana’s classifi- 
0 
mal is eyi ently o f the Serolide, apparently congeneric, 
perhaps specifically identical, with the Brongniartia trilobitoides 
of Eights (Tra Ibany Institute, vol. ii, p. 53, pl. 1, 2, 1833), 
anterior abdominal legs of the ordinary Serolid e 2 
ry Serolide. pe 
Seah in all other respects, however, leaves little doubt of the 
affinity between Tomocaris and the Brongniartia of is 
r ies refe to 
1 
Serolis, ‘there are several enera, distinct from the typical 4. 
0 seascrag and that the species described by Eights represents one 
these, although the name Brongniartia is preoccupied. ts 
$. I. SMITH. 
‘ 2. Discovery of the tusk of an Elephant in Colorado.— Concern- 
lowi i 302, we have received the fol- 
Techie note from Prof, Alfred P. Rockwell, dated Institute of 
echnology, Boston, April 4. 
b See in the April number of the Journal a notice of the error 
y Capt. Berthoud of the tusk of an elephant near Golden, Colo- 
