504 PROCEEDINGS OF THE ACADEMY OF [Nov., 
is attached to the epiphallus, but sends down a band to the apex 
of the penis. The vas deferens (vd.) is very long and free. The 
vagina is short. Spermatheca (sp.) is not distinctly divided into 
head and duct. The distal two-thirds or more is of about equal 
caliber, and distinctly varicose or sacculated. The proximal portion 
is a little contracted. This form of spermatheca is special to the 
Huachucan species, and unlike those of other districts. The other 
organs show no peculiar features. The dimensions of the organs in 
millimeters are as follows: 
Epip- 
hallus Sperm. Diam.| Mu- 
Species. Penis.| and |Flagel-|) Va- |atheca, of | seum 
flagel-| lum. | gina. | and | shell. | No. 
Ls | lum. | duct. 
| | ' | 
a angigyra, ey ee | - 24 ifs 3 22 13-14 | 83,269 
A.angigyra, east fork Pay it Weesiassci: | 4.5 | 22.5) | 
Salvation SM nde ae { een out DOP eae eee eee 21 S Men leas oe 
A. bifurca, Tanner Cn.......... { ae a 1.5 5 29 \ 15 | 94,388 
Mepis, ee ee ‘ A aa hg pill og) pets oiaed 
A.ursina, Bear Cn... 5 46 ee! 32 16 | 94,349 
Ar heterodonta, Cave Creek... @ BAT sir ey tee 5 24 16 | 94,350 
A. microdonta, Cave Creek... 8 40 1 say || 2X0) 19 | 94,347 
A. varicifera, Wickersham a 7.5 35 1.5 5 27 18 | 94,340 
BRGGIE huss eee eres tocse 3 6 29 1.8 4 25 17 (| 94,341 
All the specimens were measured from alcoholic preparations except 
A. levettet ursina, 94,349, which was dissected fresh. 
The figures on plate XX represent the following species: 
A, levettei ursina, No. 94,351, head of Bear Canyon (pl. XX, fig. 1). 
A. levettei ursina, No. 94,349, head of Bear Canyon (pl. XX, fig. 4). 
Atrium protruding. 
A, 1. angigyra, No. 83,269, Ramsey Canyon; type lot (pl. XX, fig. 2). 
A. l. heterodonta, No. 94,350, head of Cave Creek. 
A. microdonta, No. 94,347, head of Cave Creek; type lot (pl. XX, 
fig: FT): 
A. varicifera, No. 94,340 and 94,341, Miller Peak, Ash Canyon side 
(pl. XX, fig. 3). Atrium protruding. Fig. 6, the penis opened. 
Fig. 5, spermatheca of another individual. 
———— 
