DRYM.EUS, SOUTH AMERICAN. 271 



D. SCITULUS (Reeve). PL 47, figs. 16, 17, 18. 



Shell almost imperforate, oblong-turrited, rather solid, though 

 thin. Opaque-white, with numerous longitudinal, arcuate, purple- 

 black stripes not extending above to the suture, which is bordered 

 below by a white band, nor below to the base, there being a yellow 

 basal area ; early whorls red. Surface glossy, the growth wrinkles 

 very slight. Spire high, turrited, the sutures impressed ; apex with 

 shallow but typical Drymceus sculpture. Whorls 7, somewhat con- 

 vex, the last convex, tapering below. 



Aperture small, brown-streaked within, much less than half the 

 alt. of shell; peristome thin, unexpanded ; columella vertical or ob- 

 liquely obsoletely folded, the outer edge reflexed and appressed, 

 leaving but a slight umbilical chink. 



Alt. 28, diam. 10J ; alt. of aperture 11 mill. 



Chachapoyas, Peru (W. Lobb) ; between Maeanya and the Mara- 

 non River (Raimondi). 



Bulimus scitulus REEVE, P. Z. S., 1849, p. 97 ; Conch. Icon., pi. 

 97, f. 513. PFR., Monographia, iii, p. 411 ; viii, p. 151. 



In D. scitulus the spire is more turrited and the aperture shorter 

 than in D. rubrovariegatus. D. lamas and trujillensis have the last 

 whorl more elongated, especially as seen in a dorsal view. 



The specimens before me, two of which are shown in figs. 17 18, 

 differ from Reeve's figure in having a wide light subsutural band 

 and basal area, as described above. I believe them to be specifi- 

 cally identical however. Pfeiffer's diagnosis of the typical form is 

 as follows : " Subperforate, subfusiform-oblong, rather solid, rather 

 smooth, glossy ; dull whitish, ornamented with close narrow streaks 

 of orange and scarlet ; spire long-conic, rather acute. Whorls 7, 

 slightly convex, the last three-sevenths of the length, tapering at 

 base. Aperture subvertical, narrow, subrhombic-oblong ; peristome 

 simple, unexpanded, the right margin lightly arcuate, columellar 

 margin a little reflexed and vaulted above. Alt. 29, diam. 1 1 ; alt. 

 of aperture 13, width 5A mill." 



Reeve remarks " neatly marked with fine waved white lines upon 

 a purple-blue ground, tinged toward the base with a bright rust- 

 red." 



Var. citrinellus (' Philippi ' Pfeiffer). Whorls a little more con- 

 vex, no scarlet streaks. Collected with the type form by Raimondi. 



