1917.| NATURAL SCIENCES OF PHILADELPHIA. 95 
of the penis is not’ swollen, and its cavity contains four or five sub- 
equal longitudinal ridges. These structures have been found con- 
stant in a great many specimens dissected, from Utah, Colorado, 
Arizona and New Mexico.2. In O. swopei the lower part of the penis 
is conspicuously swollen, its cavity containing several large, irregular, 
fleshy processes (fig. 3b), below which there are many small longitu- 
dinal cords (fig. 3). 
The organs measure: 
Length of penis. . . Santas ee ica eee 
swollen portion of penis. i beeen ees SS 
Seth GHe CYOMOUANIIS cocci cet secede lovee ete lgy ES 
‘\ of penial retractor......... ae hatien ni 
‘* of vagina... ; , = OLOr 
sacs OL spermatheca a and duct. ae eal . 
Diameter of shell. SE ett ol a 
O. concentrata differs by its far shorter penis. 
In the specimen dissected, taken about September 15, there were 
eight embryos (PI. IX, fig. 13), the largest 4.2 mm. diameter. 
The base shows many smooth spiral lines and bands cutting through 
densely crowded, crinkled radial strie. When these are worn off it 
appears almost smooth, the apparently strong spiral sculpture 
shown in the figures being cuticular. 
A few beautiful albino shells were found in one rock pile in Station 45. 
Oreohelix metcalfei Ckll. PI. VIII, fig. 5 
Oreohelix strigosa metcalfer CkAl., Nautilus, XVIII, 1905, p. iiss | Leslls orate 
Proc. A. N. 8. Phila., 1905, p. "278, edt 25, figs. 44, 48, 92. 
This species was described from shells collected by Mr. O. B. 
Metcalfe ‘near Kingston,” the exact spot not designated. We 
hunted one day around Kingston, but did not find it. The country 
near the town is rather discouraging—steep stony hills with prac- 
tically no shade, though there is abundant limestone. Probably 
we did not go far enough afield. We suspect that the colony was 
either nearer the mountains or northward, probably not in the 
immediate vicinity of the town. 
Three very old ‘‘bones”’ were found by one of us in Sam’s Canyon, 
Station 53, some miles south of Chloride. These occurred with 
Holospira, like the original lot. 
It appears that the O. metcalfei group, in Grant, Sierra and Socorro 
Counties, comprises a series of forms largely parallel to the O. haydeni 
series in Utah and Colorado, but even more remarkable in its extremes 
of form and sculpture. 
2 See these PRocEEDINGS for 1905, p. 272, PL. 19, fig. ey 1916, p. 345, PL 19, 
figs. 1-4, 6, 7; Pl. 20, fig. 8. 
