SEMINELLA. 1ft 



C. GUATEMALENSIS, Reeve. PL 58, figs. 42, 43. 



Shell wide ovate, closely ribbed, decussated by revolving 

 linear grooves ; yellowish white, with a superior band of tessel- 

 lated brown spots, and another broader one below the periphery ; 

 aperture chocolate, lip dentate within. Length, f'5 mill. 



Guatemala (Reeve) ; Panama (C. B. Adams). 



This is the C. tessellata of C. B. Adams (fig. 43), not Gaskoin. 



G. DIMINUTA, C. B. Adams. PI. 58, fig. 44. 



Shell minute, cancellated by longitudinal ribs and revolving 

 striae; yellowish, tinged or maculated with chestnut, with the 

 base stained chestnut or chocolate. Length, 8-4 mill. 



Panama (Adams) ; Mazatlan (Carpenter). 



Anachis rufotiri&a, Carp., from the latter locality, is a 

 synonym. 



C. PULCHRIOR, C. B. Adams. PL 58, fig. 45. 



Shell thin, subpellucid, smooth; yellowish, with chestnut 

 blotches and minute dots arranged in quincunx order, the colors 

 fascicled or filleted at the sutures ; lip rather sharp, thickened 

 and sinuated behind, with a few granules inside. 



Length, 4'5 mill. 



Panama. 

 C. UNDATA, Carpenter. 



Shell small, turreted, the nuclear whorls smooth, tumid, with 

 mammillate apex, the others longitudinally ribbed, the ribs nine 

 in number, obsolete anteriorly and posteriorly, with distant 

 acute spiral lirse ; aperture oval, with a short, straight canal, 

 outer lip acute, not lirate within ; color reddish brown, under a 

 thin epidermis. L. -44, diam '2 in. 



Catalina Island, Cal. 



Operculum nassoid (?), the only one obtained was broken in 

 extracting it. The sculpture consists of elongated knobs swelling 

 in the middle ; with spiral lines hanging as it were from pier to 

 pier, as in a suspension bridge. 



C. PENICILLATA, Carpenter. PL 58, fig. 46. 



Shell small, Metuloid, turreted, yellowish, more or less marbled 

 with chestnut ; nuclear whorls two, helicoid, tumid, with mammil- 

 lary apex; normal whorls six, convex, with rounded longitudinal 

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