PUPA. 337 



11. VERTIGO MILIUM, GOULD. 

 PLATE LXXI. FIGURE 1. 



V. testa minutissima, ovali, castanea ; anfractibus quin- 

 que, convexis ; apertura semi-circulari, sub-cordata, denti- 

 bus sex armata ; labro bicurvato ; umbilico expanse. 



SYNONYMS AND REFERENCES. 



Pupa milium, GOULD, Bost. .Tourn. III. 402, pi. 3. f. 23; 



Invertebrata, 1S7, f. 118. 



DE KAY, Nat. Hist. New York, 48, pi. 4, f. 44. 

 ADAMS, Vermont Mollust-a, 7; Sill. Journ. XL. 271. 

 PFEIFFEK, Monog. Helio. Viv. II. 362. 



DESCRIPTION. 



ANIMAL very light gray, darkest above ; foot thick, 

 broadest behind the middle, tapering suddenly to a point. 

 Tentacles two, somewhat globular at tips, in the centre 

 of which are the eye spots. 



SHELL very minute', sub-cylindrical, diminishing equally 

 to both extremities ; epidermis dark amber, or chestnut 

 color ; whorls five, rounded, very minutely striated, 

 decreasing slightly to the apex, which is obtuse ; suture 

 deep ; lip white, slightly reflected ; aperture lateral, half 

 the width of the last whorl, within brownish, general 

 shape semi-circular, truncated abruptly and directly by 

 the last whorl, a testaceous deposit upon which forms the 

 transverse margin, and connects the two extremities of 

 the lip ; circumference made up of two curves of different 

 radius uniting in the outer lip, where the junction causes 

 an angle projecting inwards, the smaller curve compris- 



VOL. n. 43 



