S294 
Monacha cantiana (Montagu) 
Plate 11) oF 
Shell of medium size, depressed, narrowly umbilicate, thin, translucent, 
and moderately glossy. Last whorl not deflected. Horn-colored to light 
brown. Whorls well-rounded; aperture roundly or ovate-lunate; outer lip 
sharp but often ringed inside with a callus or thickening. Adults (with 
5-6 whorls)measure 16-18 mm. in diameter. 
Distribution: Western and southern Europe, Ireland, England except north- 
western part. Locally introduced into Canada, 
Monacha carthusiana (Muller) 
Piugurer >, A 
Shell very similar to M, cantiana but the umbilicus is narrower, often 
perforate or imperforate, and the last whorl descends slightly in front. 
Adults (with 5-6 whorls) measure 14-18 mm, in diameter. 
Distribution: Europe. 
Monacha schotti (Pfeiffer) 
Figure 135 
This species is similar to M. cantiana, but is smaller, more depressed, 
and the last whorl is deflected. The umbilicus is relatively wider, but 
very shallow, showing only 1/2 whorl or less. Adults (with 4-5 whorls) 
measure 12-14 mm, in diameter. 
Distribution: Eastern Mediterranean countries, Asia Minor. 

Figure 13. - A, Monachacarthusiana (Muller); BS 
Monacha schotti (Pfeiffer); C. Hygromia cinctella (Draparnaud). 
