ORTMANN I TERTIARY INVERTEBRATES. 237 
1887 T. c . Philippi, Tert. & Quart. Verst. Chiles, p. 67, pi. 7, f. 3 (after 
Sowerby). 
1897 T. c. v. Ihering, in: Rev. Mus. Paul., v. 2, p. 31 1. 
Shell turrite, elongate. Whorls numerous, convex in the middle, in 
the upper part depressed, with an indistinct, depressed line running par- 
allel to the suture. 1 1-15 longitudinal ribs on each whorl ; these ribs are 
slightly curved, and extend from suture to suture, although less distinct 
in the upper, depressed part. Mouth elongate, with a short canal. Colu- 
mella smooth. 
Height (of fragment), 29 mm; diameter, 10 mm. 
Remarks: V. Ihering distinguishes two varieties: var. quemadensis , 
with the ribs extending from suture to suture, and more elongate mouth, 
and var. santacruzensis, with the ribs indistinct just below the suture, 
and shorter mouth. Our specimens seem to belong to the first variety, 
since the ribs, although less strongly pronounced on the upper part, still 
are distinctly discernible, and since the mouth is a little more elongate 
than in Sowerby ’s figure. 
Recently, v. Ihering has informed me, that the Chilian T. costellata is 
different from both Patagonian forms, but does not say in what char- 
acters. 
Record of specimens: Mouth of Santa Cruz River, 3 sp. ; Lake Pueyr- 
redon, 600' above base, 1 sp. (jun.). 
Distribution: La Cueva and Jegua quemada, Suprapatagonian beds (v. 
Ih.) ; Navidad, Chili (Sow., Phil.). 
Affinities : The genus Terebra is rare in Eocene deposits, but the num- 
ber of species increases rapidly from the Miocene upward. It is a char- 
acteristic tropical genus. 
Hoernes (1856, p. 134, pi. 11, f. 30) records this species ( T. costellata) 
from the Miocene of the Vienna basin ; comparing his figure and descrip- 
tion with our individuals, I do not believe that they are identical ; in our 
species the ribs are much stronger, less numerous, and the whorls are 
more distinctly convex. Nevertheless, there is a close resemblance to 
this Miocene species. 
(The second Navidad species of Sowerby, T. imdulifera , has been 
identified by Hoernes, p. 130, with T. acuminata of Borson from the 
Miocene and Pliocene, of Europe and, indeed, I cannot see any differences 
between them.) 
