138 



A MANUAL OF AMERICAN LAND SHELLS. 



A. redimita. 



Yar. redimita. 

 Shell imperforate, globose conic, rather thiu, wrinkled, covered with 

 Fig. 116. miunte and crowded granulations; color reddish-brown; 

 apes free from granules, rather blunt; spire elevated; 

 suture impressed; whorls G, convex, the last quite large 

 and rounded, falling towards the aperture, and banded 

 with reddish brown above the middle; aperture rather 

 large in ])roportion to the size of the shell, very oblique, 

 trnnsver.sely rounded, within showing the band ; peristome simple, red- 

 dish ashcolor, thickened, reflected slightly at the base, ends approached; 

 umbilicus entirely covered with a white callus. Greater diameter 21, 

 lesser 17"""; height, 12"'™. 



Hvlix ndimita, VV. G. Binney, Proc. Acad. Nat. Sci. Philad., 1857, 183; Terr. Moll., 



iv, 10; L. & Fr.-W. Sb., i, 167 (1809).— Pfeiffer, Mou. Hel. Viv., iv, 349. 

 Helix Xiddiniana, vav., Binney, Terr. Moll., iii, pi. vi, Hj^. 1 (except middle figure). 

 ruh/nuta redimita, Tkyon, Am. Joiini. Conch., ii, 320 (1867). 

 Arionla redimita, W. G. BiNNEY, Terr. Moll., v, 359. 



San Clemente Island, California, in the California Eegiou. 



Jaw stout, strongly arched, transversely striate in parts; ends blunt, 

 scarcely attenuated ; with G prominent, sharp ribs, equally visible on 

 both anterior and posterior surface, their ends strongly pectinatlng 

 both margins. 



The lingual membrane (Terr. Moil., Y., Plate IX, Fig. G) has 43-1-43 

 teeth. The seventeenth tooth has its inner cutting point split. I can 

 detect no side cusps to outer laterals. 



Genitalia as in Euparypha Tryoni. 



Arioiita Ayrcsiaiia, Newcomb. 

 Shell umbilicated, globosely convex, rather thick, of a dead white 

 Fig. 117. with a uarrow revolving brownish band, with rough, 



oblique incremental strife, deeply cut by coarse revolv- 

 ing lines; whorls 7, rather convex, the last globose, 

 descending in front; si)ire elevated; umbilicus small; 

 aperture oblique, subcircular, banded within; peristome 

 simple, its ends joined by a light callus, that of the 

 columella widened, reflected over and half conceal- 

 ing the umbilicus. Greater diameter 21, lesser 19"'"'; 

 height, 12^'"'>'. 



A. Ayreniana. 



Helix Ji/resiana, Newcomb, Proc. Cal. Acad. Nat. Sci., ii, 103 

 (1861).— W. G. Binney, L. &. Fr.-W. Sh., i, 72, fig. 120 

 (1869). 



Aglaja Ayresiana, Tkyon, Am. Journ. Conch., ii, 312 (1866): iii (1867). 



Ariouta Ayresiana, W. (i. Bixney, Terr. Moll., v, 3.'")9. 



