304 



DESCRIPTIONS OF NEW SPECIES OF DRYMJEUS FROM PERU, 

 MEXICO, ETC. 



By S. I. Da Costa. 



Read Vlth April, 1907. 

 PLATE XXVI. 

 Drtm^us punctatus, n.sp. PI. XXVI, Figs. \, \a. 

 Testa elongata, fusiformis, imperforata, tenuiuscula, Itevigata, 

 nitida, lutea vel albida, strigis undatis nigris, albo-punctatis picta, 

 spira conica, apice obtusulo ; anfractus 7 planiusculi, ultimus f 

 longitudinis paulo superans ; columella vix tortuosa ; apertura ovato- 

 oblonga, intus violacea ; perist. album, marginibus externo et basali 

 late expansis, columellari subrecto, breviter reflexo. Long. 34, 

 diam. 1 1 mm. ; apertura 16 mm. longa, 8 lata. 

 Hah. — Chanchamayo, Peru. 



The reflexion of the columella forms a slight umbilical chink. 

 ■There appears to be much variation both in form and colour among 

 the specimens collected of this species, the differences being, however, 

 insufficient to separate them ; the writer has therefore decided to 

 describe those that differ from the typical form as varieties, and offers 

 accordingly the following arrangement : — 



A. Typical. 



B. Var. alhida. (PI. XXVI, Figs. 2, 2a.) Shell rather shorter, 



with narrower and paler stripes on a white ground. 



C. Var. ventricosa. (PI. XXVI, Figs. 3, 3«.) Shell shorter and 



more ventricose, with wavy chocolate stripes on a buff 

 ground, but with less distinct punctation and with three 

 interrupted obsolete bands on the body-whorl. 



Drym^tjs incognita, n.sp. PL XXVI, Figs. 4, 4ff. 



Testa ovato-conica, compresse umbilicata, tenuis, laevigata, nitida, 

 lutea, strigis spadiceis flexuosis albo-punctatis, fasciisque 3 fusces- 

 centibus interruptis ornata ; spira conica, acutiuscula, sutura sub- 

 marginata ; anfractus 6 convexiusculi, ultimus f longitudinis sequans; 

 columella mediocriter torta, valde recedens, purpurea; apertura ovalis, 

 basi effusa, intus purpureo-limbata ; peristoma tenue, late expansum, 

 ad marginem album Long. 29-5, diam. 12 ram. ; apertura 14 mm. 

 longa, 10 lata. 



Hah. — Bogota. 



The writer received many years ago two specimens of this beautiful 

 shell, one of which differs from the type in having the longitudinal 

 stripes continuous and not arranged in interrupted bands. They 

 appear to bear a resemblance to D. Pealianus, Lea, the type of which 

 was destroyed by fire in the museum at Philadelphia. 



