76 THE NAUTILUS. 



white, minutely almost microscopically thickly irrorated all over 

 with dots of still lighter color than the spots, and showing on them as 

 well as the rest of the shell, thickly, minutely granulated at the 

 extremties, and less thickly so over dorsal surface, sides smooth. 

 Long. 55, lat. 36 mm. 



Notwithstanding the dull coloring and that the granulation de- 

 tracts somewhat from the lustre of the shell, it is still a very pretty 

 and striking addition to the handsome suite of exanthema in the 

 collection. 



A dwarf G. cervinetta is a very pretty little shell of a dark umber- 

 brown, with whitish spots and dorsal line down the centre of the 

 back, base fawn color with faint brownish blotch and bright choco- 

 late-brown teeth. Long. 31, lat. 17, alt. 13.5 mm. 



In the suite of C. lynx is a very interesting example. It is longi- 

 tudinally corrugated from one side to the other by lines of growth. 

 The earlier lines are narrow, numerous striations running from the 

 spire obliquely to the base in which they disappear; on the back they 

 are parallel to the sides, only bending near the anterior extremity; 

 on the outer side they become parallel to the edge of the base. From 

 the earliest to the latest stage of growth the intervals between the 

 striae gradually and regularly increase in width until those on the 

 outer side are shallow sulci between sharp costulae, the width of the 

 last sulcus being 3 mm. It is a young shell, probably waiting its last 

 deposit of enamel, which would very likely obliterate the growth 

 lines ; as it is, it is a very beautiful illustration of shell-formation. 



Another specimen of lynx is interesting for its size ; it is adult, 

 normal in every respect, except size. Long. 21, lat. 11.5 mm. 



CYPIUEA VITELLUS var. FERGUSONI, var. nov. 



Teeth, base and sides normal, dorsal line wide, lighter in color 

 than the back, dorsal surface rather dark fulvous brown, obscurely 

 banded with lighter shade and spotted with bluish-white or light 

 lead-colored spots, which seem to solve themselves into rows of three 

 or four in various directions, each spot surrounded by a narrow 

 blackish ring; the spots at sides are not annulated. Long. 37, lat. 23, 

 alt. 19 mm. 



The difference between this and the type lies in the annulation of 

 the spots and their disposition in short rows. It is fully developed 

 though small in size. Loc. ? 



