ar A 
NEW SNAILS—PARODIZ 447 
striae under a strong lens, the striae, perhaps, very shortly pilose, 8 
whorls decidedly convex, the earliest 1% longitudinally delicately 
costulate. Height 20, diam. 7, alt. of aperture 7 mill.” 
Topotypes (USNM 198366, coll. Rolle, 1904; and CM 1761, coll. 
H. H. Smith, 1896) were easily recognized as the species named 
cutisculptus Ancey and the same as the specimens from Corumbaé 
distinguished by Pilsbry. A redescription of the species is necessary, 
and it is as follows: 
Shell perforate, slender, diameter scarcely larger than a third of the 
total length (33.7 percent). Color brown grayish, but whitish in 
parts where the thin periostracum is lacking. Whorls 8% regularly 
convex, with a well-impressed but irregular suture having a crenulated 
appearance. Surface almost smooth, with irregular lines of growth, 
crossed by microscopical spiral striae most noticeable around the 
umbilical zone and on the upper area of the last whorl above the 
aperture. Last whorl a little longer than half the length (57.7 percent) 
with the right wall behind aperture flattened. Aperture vertical oval, 
almost one-third of the total length; columellar lip broader and the 
ends of peristome more closely approximated than in other species, 
joined by a thin callus; on the outer lip there is a small sinus produced 
by a shallow notch on the wall of the whorl. The vertical sculpture 
of the protoconch is more irregular and waved than in other Proto- 
glyptus; it resembles that of Scansicochlea in that the spaces between 
the ribs show a few microscopical spiral lines. P. (P.) cutisculptus 
differs from montiwagus, which belongs to the subgenus Rimatula, by 
having a perfectly open umbilicus which is well separated from the 
columellar expansion by its size, shape, color, and microscopical 
sculpture. P. crepundia is also a very closely related species, but it is 
shorter, more inflated, with brown and white stripes, wider aperture, 
and less well-developed peristome. 
Pilsbry supposed that the Corumb4 specimens were perhaps very 
shortly pilose. Examining the shell under microscope, I found, but 
only in one specimen, very short, hardly distinguishable hairs on the 
spiral lines around the umbilicus, and those are without the granu- 
late structure found in trichodes d’Orbigny. Possibly these hairs are 
only remains of a juvenile character. 
Pfeiffer (Monographia helicearum viventium, col. 2, p. 112, 1848), 
distinguished a variety 6 of montivagus, from Chiquitos, Bolivia, 
larger, and with measurements similar to those specimens now ob- 
served. P. montivagus is a form living far to the southeast (loc. 
d’Orbigny’s Caballu-Cuatia, now La Paz), in the province of Entre 
Rios, Argentina; I have examined in the collections of the Museo 
Argentino de Ciencias Naturales at Buenos Aires many specimens 
from Bolivia which belong to some variety of montivagus but are 
quite different from cutisculptus. 
