CLASS GASTROPODA 
241 
crassa, dilatata, intus recta; apertura elongato sub-ovata; extremitatibus 
effusis; long., 0.4; lat., 0.3; alt., 0.25 poll. (Newcomb.) 
Shell depressly globose, crimson colored, minutely transversely striated, 
above rounded, below broadly open; lip expanded, semicircular; columella 
thick, dilated within, straight; aperture elongately subovate; extremities 
broadly notched. (Newcomb.) 
Type in ? Type locality, growing on a monster crustacean of the 
genus Echidnocerus, from deep water at the Farallon Islands. 
Range. Farallon Islands to Monterey, California. 
Family RANELLIDAE 
Genus BURSA Bolten, 1798 (Ranella) 
Shell ovate or oblong, with two rows of continuous varices, one on 
each side; aperture oval; columella arcuated and ridged, or crenulated; 
canal short, recurved; outer lip crenulated. (Tryon, Structural and System¬ 
atic Conchology.) 
Example. Ranella granifera Lamarck. 
Distribution. Tropical seas, world-wide. 
This is the genus Ranella Lamarck. 
i 
Subgenus Bufonaria Schumacher, 1817 
Bursa californica Hinds, 1843 
Plate 33, figs. 7, 8 
Annals and Magazine of Natural History, 11:255. Zoology of the Voyage of H. M. S. 
Sulphur, PI. 2, figs. 4, 5. 
Testa ovata, ventricosa, fusca; anfractibus uniseriatim tuberculatis, 
transversim granoso-striatis, tuberculis conicis, subdistantibus; varicibus 
magnis cavernosis; anfractu ultimo multiseriatim obsolete tuberculato, 
fasciis duabus angustis purpureis indistinctis cincto; apertura alba; labio 
externo crenato et dentato, interno transversim striato. Axis 52 lin. 
(Hinds.) 
Shell acuminately ovate, large, rather solid, ventricose, varices very 
strongly tubercled; whorls angulated, armed with rather distant large 
solid tubercles, transversely striated, slightly granulated, obsoletely 
wrinkled next the suture; whitish, variegated with yellowish chestnut and 
encircled with distant, narrow, interrupted, chestnut bands; columella 
faintly wrinkled; canal very short, rather broad; aperture large, interior 
white; lip crenulated, deeply sinuated at the upper part. (Reeve, Con- 
chologia Iconica .) 
Type in Museum Cuming. Type locality, San Diego, California. 
Range. Monterey, California, to Cerros Island, Lower California. 
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