240 PROCEEDINGS OF THE ACADEMY OF [Mch., 



lip. It differs from levcttei in the smaller mouth, larger umbilicus and 

 deeper constriction. Specimens measure: 



Alt. 7, diam. 15.2 mm. ; width of mouth, outside, 7.3 mm. 



a J c} a 159" " '' " 7 " 



((ly.-) u 1 f^ O " " " " 7 " 



ay u -ic a ic a ti n u 



" 6.3 " 14 " " " " 6 1 " 



u gg^ u j3g u u u u g 



" 6.8, " 14 " " " '' 6.7 " 



'' 6.3, " 12.5 " " '' " 5.8 " 



This form is about intermediate between levcttei and angigyra, but 

 it has some slight special characters of its own. They seem hardly 

 sufficient to require that it be named. See PI. XV, figs. 92, 93. 



Ashmunella levettei angigyra n. subsp. PI. XIV, figs. 47-51. 



The shell is brown, smaller and more depressed than levettei obtusely 

 but distinctly angular at the periphery. The surface of the post- 

 embryonic whorls is smoothish, under the lens seen to be very closely, 

 irregularly marked with minute growth-lines, giving it a silky lu-^ter, 

 and the last whorl is often finely malleate spirally, as in vl. levettei. 

 Whorls 6^ to 7, very closely coiled and slowly widening, all of them 

 Comdex above. The suture descends rather abruptly to the aperture. 

 Behind the outer and basal lips the whorl is rather deeply, angularly 

 guttered. The back of the lip is creamy. Aperture very oblique, 

 smaller than in A. levettei. The teeth are arranged as in levettei. The 

 notch between the two basal teeth is wider than that between the outer 

 basal and the tooth of the outer lip. The inner basal tooth is smaller 

 than the outer. The cylindric umbilicus rapidly enlarges at the last 

 whorl. 



Alt. 6.5, diam. 13.6 mm. 

 " 6.3, " 13.2 " 

 " 6, " 13 



Huachuca Mountains, in Ramsey or " Conservatory " Canyon, near 

 Fort Huachuca. Types No. 83,269, A. N. S. P., collected by J. H. 

 Ferriss, 1902 (figs. 47-49). 



This form was also found in the drift-debris of Barbakomari creek, 

 near Huachuca station. The same form was collected by Mr. Mearns 

 some years ago, and then referred to levettei. 



It differs from typical A. levettei in being smaller, with more closely 

 coiled whorls, the last one angular at the periphery. The aperture is 

 smaller and therefore more filled by the teeth. It resembles A. angu- 



