AUBICULID^E. 61 



§ 3. Umbilicus openly perforated or umbilicated. 



9. Pythia Eeeveana. 



Shell umbilicate, ovate-conic, solid, sculptured with crowded 

 longitudinal folds, whitish, irregularly conspersed with reddish- 

 brown points and spots, with a yellowish periostraca ; spire 

 conoidal, apex rather blunt ; suture linear, descending angularly 

 to the varices, which are white, dotted with brown ; whorls 

 ten, rather flat, the last a little longer than the spire, irre- 

 gularly inflated, swollen at base, somewhat compressed near the 

 umbilicus (which sometimes is very narrowly compressed), 

 marked anteriorly with a chestnut-coloured oblique streak; 

 aperture perpendicular, roundish ovate ; parietal teeth two, the 

 upper one triangular, the other entering obliquely, rather du- 

 plicate externally; columellar plait middle-sized, compressed, 

 nearly transverse ; peristome whitish, with the margins united 

 by a thin callus ; right margin simple above, dilated and some- 

 what rerlexed at its lower part, bearing within five unequal 

 teeth ; columellar margin slightly thickened, spreading. Length 

 39, greatest breadth 23|, least breadth 19 mill. 



Scarabus imbrium, A. Adams and Reeve, Voy. Samarang, p. 56. 

 pi. 14. f. 13. 



A. Adams in Proc. Zool. Soc. 1850, p. 147 ; Ann. ty Mag. 

 N. H. 2 ser. viii. p. 66. 

 Pythia Reeveana, Pfr. in Zeitschr. f. Malak. 1853, p. 190 ; Syn. 

 Auric, n. 80 ; Mon. Auric, p. 81. 



H. and A. Adams, Gen. rec. Moll. ii. p. 239. pi. 82. f. 3. 

 Polydonta scarabseus, Woodw. Man. Moll. p. 173. pi. 12. f. 36 ? 



Hab. Philippine Islands (H. Cuming) ; Celebes and Borneo 

 (A. Adams). 



10. Pythia scakabjeus. 



Shell umbilicate, somewhat rimate, elliptieally ovate, rather 

 thin, nearly smooth, arcuately folded near the suture (which is 

 slightly impressed), fulvous, spotted and marbled with chestnut- 

 coloured paintings; spire conic, with the outlines somewhat 

 convex and the apex acute ; varices rather compressed, whitish ; 

 whorls ten, scarcely convex, the last forming about four-sevenths 

 of the total length, very slightly compressed at base ; aperture 

 perpendicular, oblong; parietal teeth two, the upper rather trian- 

 gular, the other thick, entering, more or less distinctly grooved; 

 columellar plait broad, ascending obliquely inwards ; peristome 

 whitish, often painted within with chestnut-colour, bearing four 

 to five unequal teeth ; right margin rather simple at its upper 

 part, dilated and somewhat reflexed towards the base ; columel- 



