562 MOLLUSCA 



C. floridanus Gabb. Spire rather high; color yellowish, streaked 

 with broken lines of brown spots; length 5 cm.: Cape Hatteras to 

 Florida. 



C. marmoratus L. (Fig. 885). Spire low; color dark biown, with 

 large triangular white spots; length 12 cm.: Indian and Pacific Oceans; 

 common in collections. 



Family 3. PLEUROTOMIDAE. 



Shell elongate, with a tall spire; lower whorl prolonged to form a 

 long canal; aperture narrow and long; outer lip thin, with a notch near 



Fig. 885 Fig. 886 Fig. 887 



Fig. 885 — Conus marmoratus (Rogers). Fig. 886 — Bela harpularia (Verrill). 

 Fig. 887 — Cancellaria reticulata (Rogers). 



the upper end; operculum horny, sometimes absent; eyes at the base 

 of the tentacles; siphon long: 650 species; cosmopolitan; mostly in deep 

 water and towards the south. 



Bela Leach. Shell fusiform and thin; canal short; notch of outer 

 lip small or wanting; operculum pointed at both ends; aperture short: 

 northerly in distribution. 



B. harpularia (Couthouy) (Fig. 886). Shell with 6 or 8 whorls, 

 which have a shoulder just beneath the suture; brownish-pink in color 

 and with rounded longitudinal ribs which are crossed by fine revolving 

 lines ; length 16 mm. ; width 8 mm. : Long Island Sound to Nova Scotia, 

 in rather deep water. 



Family 4. CANCELLARIIDAE. 



Shell ovate or elongate, with longitudinal and revolving ridges and 

 grooves; aperture elongate, prolonged below to form a siphonal canal; 

 columella with spiral folds; outer lip ribbed within; no operculum: 80 

 species. 



Cancellaria Lamarck. Shell cancellated, reticulated or ribbed; 

 columella with prominent folds; canal rather short; outer lip bulging: 

 70 species, in warm seas. 



