218 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



This is the first recorded dextral species belonging to the section 

 Paxillus. On breaking open a D. {Paxillm) aclversus, Ad., for 

 comparison, I fonnd that in addition to the two plaits on the interior 

 of the outer wall, there is a strong lamelliform plait hanging, as it 

 were, from the parietal wall. I am not aware that this interesting 

 fact has ever been recorded before. 



14. CycLOPHORTJS DoHERTYi, n.sp. PI. XI, Fig. 5. 



Shell globose-conic, moderately thick, umbilicus almost, or entirely 

 covered by the peristome, dark reddish-brown, with oblique growth- 

 lines crossed by microscopical spiral striae, causing a somewhat granular 

 appearance; whorls 65-, convex, last slightly keeled at the periphery; 

 suture somewhat deep ; aperture subcircular ; peristome oblique, 

 double, continuous. Diam. maj. 18, alt. 18 mm. 



JSah. — Sangir I. 



A very distinct species, with a Choanopoma-\\k& peristome. 



15. PupiNA (Mouhnsia) cylindrtca, n.sp. PI. XI, Fig. 1. 



Shell oblong-ovate, thin, polished, semi-transparent ; whorls 5 ; 

 suture distinctly margined ; aperture subcircular, almost vertical ; 

 peristome slightly thickened, a semicircular notch on left margin. 

 Diam. maj. 3, alt. 5-5 mm. 



Hob. — Dodinga, Gilolo I. 



Also a very distinct species, unlike anything I am acquainted with 

 from the Moluccas. 



16. Callianella eulgida, n.sp. PL XI, Fig. 3. 



Shell imperforate, polished, ovate-oblong ; suture margined ; spire 

 oblique ; whorls 3^, rapidly increasing, smooth, two only are visible 

 from the front ; aperture circular ; peristome oblique, continuous, 

 slightly thickened. Diam. maj. 3"5, alt. 5-5 mm, 



Hal. — Burn I. 



In form very like C. Wallacei, Pf., but much larger, not so compressed, 

 broader, and with larger aperture in proportion to size. 



17. PuPiNA (Porocallta) mirabilis, n.sp. PI. XI, Fig. 6. 



Shell acuminate-oval, smooth, shining, imperforate ; whorls 5, 

 rapidly increasing, last almost equal in height to two-thirds of whole 

 shell ; suture margined ; aperture circular, almost erect, peristome 

 thickened, a tube behind the left margin of aperture just below point 

 of insertion, generally short but rarely continuous across the body- 

 whorl towards the apex. Diam. maj. 4, alt. 5'75 mm. 



Hal. — Sangir and Gilolo Is. 



In all the numerous specimens found on Gilolo I. the tube is 

 short; of the eight specimens found on Sangir I., three have the long- 

 tube extending over and above the body- whorl, and five have the tube 

 short. The direction of the tube in those examples where it is short 

 varies : in some the tube turns upwards, in others it lies more or less 

 at right angles to the spire. 



