arte re ae aly 
a a re rear 
1923] NATURAL SCIENCES OF PHILADELPHIA 97 
oad lamella vonlyis J. et. .h!. Leer... ces. ee ..8 spevimens 
A Seb Env, (OPIS TL eat OE eh eR ae a , a 
MA DASA amd parietalue.. 0 os ll es 3 os 
Form 2.—At Station 271, a deep canyon 1 mile north of the 
Manila mine hill, at a dolomite cliff facing northwest, two lots 
were obtained. These generally have the riblets weak on the 
penult or on two whorls, and the lamelle within are reduced. 
15 opened from one lot and 11 from another have lamell thus: 
No. of specimens No. of specimens 
PROUT. So Ges cs. s 10 10 
Axial and basal....... 4 “3 
Axial, basal and parietal 1 1 
These specimens average somewhat larger than the typical lot 
of ferrissi. 
An identical form was taken at Station 306 on the western dome 
of the Mustangs. Most of the specimens opened had a columellar 
lamella only, but one had 3 lamelle. 
Holospira ferrissi caneloensis n. subsp. Text-fig. 12. 
Canelo Hills: limestone hills west of the Duquesne road at 
Stations 289 to 292, the latter three miles west of the road and the 
furthest from it. Type 131010 A. N. S. and paratypes in Ferriss 
collection from Station 289. 
The shell has the short contour and small size of typical ferrissz, 
but the sculpture is slightly finer, and becomes obsolete on the an- 
tepenult to last whorls, strengthened again on the last half whorl. 
The three internal lamellx are strongly developed. 
Length 8, diam. 3.5 mm.,10 whorls. Type. 
Hy MN ice! 1ocl AD ot Station 290. 
¢ 9.8, ce 3.9 (73 113 (73 ce (73 
Three internal lamelle are present in all opened of the type lot, 
but at Station 292 some of the apparently quite adult shells had 
only the axial lamella. 
Holospira ferrissi monoptyx n. subsp. Text-fig. 13. 
Mustang Mountains, in a limestone slope facing east, near Dan 
Mathew’s ranch. Type No. 131009 A. N.8., paratypes in coll. 
Ferriss. 
The shell has the short, compact shape of ferrissi, but differs 
by having the costulation weaker on the penult and face of last 
whorl, and in numerous specimens opened there is but one lamella, 
a strong axial. 
