PUPA. ;>4:; 



14. PUPA SIMPLEX, GOULD. 

 PLATE LXXII. FIGURE 3. 



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

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

 biculari, edentula ; labro reflexiusculo. 



SYNONYMS AND REFERENCES. 



Pupa simplex, GOULD, Boston, Jonrn. Nat. Hist. III. 403. pi. 3, f. 21 ; 

 Invertebrata of Mass., 190, fig. 121 ; 

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

 PFEIFFER, Monog. Helic. Viv. II. 302. 

 DE KAY, JNat. Hist. New York, 32, 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 inclined forwards. Active in movement. 



SHELL minute, cylindrical, obtuse at apex, smooth 

 chestnut color. Whorls five, well rounded, 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. 



