158 A MANUAL OF AMERICAN LAND SHELLS. 



Succinea Stretcliiaiia, Bland. 

 Shell globose-conic, thin, pellucid, shining, striatulate, greenish 

 Fig. 142. horn-colored; spire short, rather obtuse; suture deep; 

 whorls 3, convex, the last roundly inflated; columella 

 arcuate, slightly thickeued, receding; aperture oblique, 

 s. stretchiana. rouudly oval ; pcristouic simi)le, with the mai gins joined 

 by a thin callus. Length, G^"""; diameter, 5"""; aperture, 5""" long. 



Succinea Sfrefchiana, Blaxd, Aun. N. Y. Lye, viii, 168, fig. 16 (1865).— Tyuox, 

 Amer. Jouru. Conch., ii, 231, pi. ii, fig. 5 (1866).— W. G. Binney, L. & Fr.- 

 W. Sh., i, 264 (1869); Terr. Moll., v, 422. 



In both Central Province and Califoruian Eegion ; Little Valley, 

 Washoe County, Nevada, on the eastern slope of the Sierra 2^evada, 

 6,500 feet above the sea ; Mariposa County, California. 

 The original description and figure are given above. 

 Jaw as usual ; no anterior ribs. 



The lingual membrane (Terr. Moll., V, Mate X, Fig. J) has IG-l-lG 

 teeth and 8 laterals. 



Succinea Hawkiiisi, Baird. 

 Shell elongate-obovate, thin, pellucid, shining, undulately striated, 

 pinkish, within pearly ; spire acute ; whorls 4, con- 

 vex, the last equaling two-thirds the shell's length; 

 suture impressed; aperture oval, effuse below. Length 

 2, latitude {^ inch. 



Eahitat. — Lake Osoyoos, British Columbia. (Brit. 

 Mus.) 

 ,s'. naivkimi. rpi^-g ^i^^^^ jg ^f ^u clcgaut fomi and of a pinkish 



color, with the interior of a pearly luster, It is smooth and sliining, 

 but marked with waved strine of lines of growth. It resembles very 

 much in figure the Succinea Pfclfferi of Europe, but is of a still more 

 elegant shape and of a brighter hue. 



I have named it after Lieutenant-Colonel Hawkins, K. E., commis- 

 sioner of the British T^orth American boundary commission. (Baird.) 



Succinea Uaivlcinsii, Baird, Proc. Zool. Soc, 1803, 6S; in Lord's Nat. in Vancouver's 

 Island, ii, 362 (1866).— Bland, Ann. N. Y. Lye, viii, 168, fig. 16(1865).— 

 Tryon, Amer. Journ. Conch, ii,240 (1866).— W. G. Bixxey, L. & Fr.-W. Sli., 

 i, 268 (1869) ; Terr. Moll., v, 427. 



A species of the Northern Region, confined to Briti. h Columbia, as 

 far as now known, or i^erhaps should be considered of the Pacific 

 Eegion. 



Animal unknown. 



Fig. 143 is coi>ied from the original figure. 



