PUPA. 343 



14. PUPA SIMPLEX, Gould. 

 Plate LXXII. Figure 3. 



P. testa minima, cylindracea, Isevi, ad apicem obtusa, 

 rufo-cornea ; anfractibus sex, convexiusculis ; apertura or- 

 bicular!, edentula ; labro reflexiusculo. 



SYNONYMS AND KEFEEENCES. 



Fiipa simplex, Gould, Boston, Joiirn. Nat. Hist. III. 403, pi. 3, f. 21 ; 

 lavertebrata of Slass., 190, (ig. 121 j 

 Monog. of Pupa, 7, pi. 3, f. 21. 

 Pfeiffee, Monog. Helic. Viv. II. 302. ■ 

 De Kay, Nat. Hist. New York, 52, pi. 36, f. 347. 



DESCRIPTION. 



Animal dark gray above, light gray and pellucid be- 

 low ; foot moderately long, trilobate anteriorly, the mid- 

 dle lobe minute. Tentacles two only, usually clavate, 

 sometimes very decidedly. Shell carried perpendicu- 

 larly, or even incUned forwards. Active in movement. 



Shell minute, cylindrical, obtuse at apex, smooth 

 chestnut color. Whorls five, well i-ounded, separated by 

 a deep suture ; aperture circular, the lip nearly continu- 

 ous, simple or scarcely everted, except on the left, where 

 it partially conceals a small umbilicus. No trace of a 

 tooth has been detected in any specimen. 



Length one-fifteenth of an inch; breadth half as 

 great. 



