BULLA. 343 



Balla rufolabris AD., Thes. ii, p. 577, pi. 123, f. 76. SOWB., 

 Conch. Icon. f. 17. 



I have not seen this species, which seems to be distinguished from 

 B. pundulata mainly by its red-edged lip. 



B. PANAMENSIS Philippi. Unfigured. 



Shell oblong-ovate, solid ; whitish marbled with brown ; destitute 

 of transverse strice ; vertex umbilicated, spirally striated; aperture 

 dilated below, narrow above ; lip straight in the middle. 



Alt. 1 1 , diam. 8 lines. (Phil.'). 



Panama (E. B. Phil.). 



B. panamensis PH., Zeitschr. f. Malak. 1848, p. 141. 



Distinguished from B. media and B. striata by the lack of all striae 

 (Ph.'). This is probably identical with pundulata or aspera, but the 

 description is not sufficient for identification. 



B. EX A R ATA Carpenter. Unfigured. 



Shell small, elliptical, compressed, aperture elongated, narrow ; 

 brown, covered with a thin epidermis ; spirally delicately grooved, 

 the lines more or less distant, nearly vanishing in the middle ; 

 spire hardly deeply umbilicated, with transverse divaricate striae 

 within ; lip produced above ; inner lip forming an umbilicus-like 

 chink toward the columella. 



Alt. '125, diam. '055 inch. (Cpr.). 



Mazatlan, on Spondylus, Liverpool Coll. 



Bui la exarata CPR., Maz. Cat., p. 173. 



Distinguished by the acuminated form, fine, rather distant spiral 

 grooves, narrow produced aperture, and slight umbilical chink 

 formed by a fold of the labium. The small spiral umbilicus ap- 

 pears slightly denticulate within, from the striae of growth being 

 there well marked. The labrum extends '005 beyond the spire. 



INDO-PACIFIC SPECIES. 

 B. AMPULLA Linne. PL 34, figs. 1, 2, 3. 



Shell large, solid, globular-oval, with the lateral outlines every- 

 where well rounded. Closely and finely mottled or speckled all over 

 with pinkish-gray on a creamy or flesh-tinted ground, usually with 

 darker clouds, irregular or > -shaped ; covered when fresh with a 



