96 MALONE JURASSIC FORMATION OF TEXAS. [bull. 266. 
species was derived solely from an imperfect specimen, which was 
from the locality 1| miles east of Malone station. Besides a frag- 
ment from the locality just named, Doctor Stanton's collections 
include material of this shell from the following localities: From No. 
13 (the Nautilus horizon) of his Malone Mountain section, on the 
west side of the mountain, southwesterly from Malone station; and 
from about 1 mile east of Finlay station, one of the specimens from 
the last-named locality being in rock with Trigonia calderoni A 
poorly preserved portion of probably this fossil was also found by 
Doctor Stanton in the anticline in the eastern slope of Malone Moun- 
tain nearly 1 mile north of its southern end. 
The species is named after the late Mr. Robert W. Goodell. 
NERINEIDtE. 
Genus NERINEA Defrance. 
Nerinea goodellii sj). n. 
PI. XXI, figs. 1-: ( >. 
Shell turriculate to cylindrical-turriculate, not exceedingly atten- 
uate; Avails thin, the outer one bearing internally one prominent, thin, 
and acute fold which extends scarcely half way across the chamber; 
columella rather slender, in part hollow, bearing 2 thin folds both 
smaller than the outer fold; whorls apparently IT or more, low, 
usually as much as one and a half times and sometimes about twice 
as wide as high, concave, the opposed borders of successive whorls 
tending to form a low cariniform ridge with linear suture on the 
summit line, the surface of each whorl ornamented with 3 or 4 
linear, raised, revolving lines and ordinary oblique, somewhat sinu- 
ous growth lines. Of the three internal folds, the upper columellar 
one. which descends from the junction of the upper wall of the 
chamber with the columella, is the smallest and thinnest, yet is quite 
salient. 
Measurements. — Breadth of largest wmorls reaching 14 mm. ; angu- 
lar divergence of slopes 5° or 6° to 8°. 
Occurrence. — Common in the limestone layers, and less so in the 
sandstone, at various levels in the Theta, 1J miles east of Malone sta- 
tion; exceedingly abundant in some of the lower layers. Weathered- 
out specimens usually occur in segments of two or three to a dozen or 
more whorls. Besides the numerous specimens in my collection, 
which include some natural longitudinal sections, I have examined 
four specimens, one of which is an artificial section, submitted by 
Doctor Stanton. Several poor weathered sections were obtained near 
the south end of Malone Mountain, from a locality which yielded 
also a specimen of Trigonia munita, 
