98 MALONE JURASSIC FORMATION OF TEXAS. [bull. 2M 
the whorl next above; suture subtended by a narrow, plain baud 
which is itself limited below by a delicate striseform groove; surfaq 
ornamented only with growth lines, which are for the most pari vcr 
tical, becoming strongly recurved as they near the upper border o 
the whorl. 
Measurements. — A fragment 6.5 mm. wide at the lower end has \ 
whorls in a height of l >( J mm. 
Occurrence. — The species is based on several segments collect e< 
and a longitudinal section prepared by Doctor Stanton, and whicj 
are from the locality 1] miles east of Malone station. 
Genus NEKINELLA Sharpe. 
Nil; I NKI.I.A STANTON I Sp. I). 
Pi. xxi, figs. <; 9. 
In L898 Doctor Stanton very kindly communicated a specimen oj 
Nerinella, partly cut in longitudinal section, which he had obtaine] 
while collect ing with me during the previous year from the same beds 
l 1 , miles east of Malone station, that yielded Nerinea goodellii. 
It is exceedingly attenuated and, within 53 mm., includes 20 con 
cave whorls from a number that must obviously have been mud 
greater in the complete shell. The chamber has no columellar fold 
but its outer wall presents a simple, short, and rather obtuse fold al 
about mid height. The whorls are crossed by numerous delicaa 
growth lines and are ornamented with 1 equidistant, spiral, carina 
form lines on the main part, besides 2 which are so close to the whor 
borders as often to be difficultly distinguishable. 
I find in my own collection, made \\ miles east of Malone, a few 
incomplete and more or less weathered specimens of this fossil. Out 
of these supplements Doctor Stanton's specimen as to the upper pari 
of the spire, showing L6 additional whorls, with apparently a verj 
few still to be added at the apex. Another represents a basal portioi 
considerably broader than the larger end of Doctor Stanton's speci- 
men, so that the number of whorls in this shell can be little, if at all, 
short of 50. The greatest breadth shown by any of these specimens 
i^ between 5 and mm. The height of the shell is roughly estimated 
at about 100 nun. 
This fossil is also recognized in material obtained by Doctor Stan- 
ton at the following places: In No. 13 of his Malone Mountain sec- 
tion, about 2 miles southwest of Malone station, on the west of the 
mountain; in about the same horizon something over 1 -mile east of 
Finlay station, and in the anticline at the east base of the mountain, 
about a mile from its southern end. 
