114 MONOMPHALUS. 



the side convex ; aperture with white, expanded lip, subreflected 



below. Diam. 4-5, alt. 2 mill. 



New Caledonia. 



Has fewer whorls (about 7) than the previously described 

 species, is smaller, has a different aperture, and is less concave 

 above and below. 



Var. SOLIDULA, Crosse. Fig. 10. 



Thicker, slightly larger, lighter colored, last whorl a little 

 more elevated. Diam. 5, alt. 2*5 mill. 



D. MICROPHIS, Crosse. PL 21, figs. 16, 17. 



Small, slightly concave above and below, rather strongly 

 striate-costulate, suture impressed ; unicolored olivaceous- 

 corneous ; aperture narrowly auriform, lip white, continuous, 

 subreflected, thickened on the columella. 



Diam. T75, alt. '5 mill. New Caledonia. 



A shell of only 4^ whorls, yet adult, as shown by its lip. 

 Very much smaller and less concave above and below than 

 either of the preceding species. 



Subgenus MONOMPHALUS, Ancey, 1882. 



D. BAVAYI, Crosse. PI. 25, figs. 95-97. 



Spire somewhat depressed, umbilicus rimate, covered, whorls 

 covered by numerous thread-like, sharply raised, dark costulge 

 on a chestnut-colored surface, lip thin. Diam. 7, alt. 4 mill. 



New Caledonia. 

 D. CEREALIS, Crosse. PI. 27, figs. 18, 19. 



Subimperforate, depressed, thin, flexuosely striate-costulate, 

 epidermis yellowish brown. Diam. 5, alt. 1*75 mill. 



New Caledonia. 

 D. HECKELTANA, Crosse. PI. 25, figs. 98-100. 



Nearly covered rimate, rather thin, with close fine stride; 

 chestnut-brown, maculated with whitish around the suture. 



Diam. 6'5, alt. 4 mill. 



New Caledonia. 



First described as Helix Rossiteriana, Crosse, 1871 (not H. 

 Rossiteri, Angas, 1869). 



Var. GRAMMICA, Crosse. 



Last whorl tessellated with chestnut and yellowish brown. 



