EAST COAST MARINE SHELLS 



137 



PI. 52, Fig. 5 



Cape Hatteras, North Carolina to 



Florida and Texas 



MANGILIA GUARANI Orbigny. Color brown, 

 often with narrow and lighter bands; ribs 

 rounded, conspicuous and crenialating the 

 suture; revolving lines elevated. Length 

 5 mm. 



PI. 5S, Fig. IS 



Palm Beach, Florida 



MANGILIA LANCEOLATA PSILA Bush 

 PI. 65, Fig. g 



MANGILIA LIMONITELLA Dall. Shell small, 

 thin, translucent, lemon yellow; whorls 

 eight to nine, turreted, angulated by ribs 

 on the periphery, nucleus nearly smooth, 

 sharply sculptured subsequent surface; spi- 

 ral sculpture of numerous sharp threads, 

 quite fine, and extending over entire shell; 

 two stronger threads at the Indistinct su- 

 ture; transverse sculpture of strongly 

 marked lines and about a dozen narrow, 

 sharply elevated riblets, extending from su- 

 ture to suture; notch distinct, canal short 

 and straight. Length 6.75 mm. It lives 

 upon mud flats between tides. 



PI. 52, Fig. 6 



PI. 68, Fig. 3 



Cedar Keys, Florida to the Tortugas 



MANGILIA OXIA Bush. More sparsely trans- 

 versely sculptured, surface smoother and 

 more polished than the variety melanitica. 

 The ribs are also sharper, the shell red- 

 dish brown all over and pillar not so dark. 

 Depth range 10-25 fathom i. Length 5 mm. 

 Off Cape Hatteras, North Carolina 



MANGILIA OXIA MELANITICA Dall. Spire slen- 

 der, base short; whorls nine, first two 

 rounded and smooth, the rest with revolving 

 lirae; last four whorls with faint ribs; 

 aperture wider below than above; notch deep 

 and rounded, surrounded by inflated raised 

 rim. Length 4.5 mm. 



PI. 65, Fig. 3a 



Cape Hatteras, North Carolina to 



Haiti 



MANGILIA OXYTATA Bush. Range 14-51 fathoms. 

 PI. 65, Fig. 1 

 Off Cape Hatteras, North Carolina 



MANGILIA PLICOSA C. B. Adams. Ribs eleven 



to twelve, crossed by about same number of 

 strong ridges and sometimes producing nod- 

 ules; color gray or reddish brown, interior 

 dark, dead shells whitish. Length 6-8 mm. 



This species may easily be secured 

 in Tarpon Bay, Sanibel, with a small dredge 

 operating on mud bottom in shallow water. 

 It is a widely distributed and not uncom- 

 mon form. 



PI. 52, Fig. 2 



PI, 69, Fig. 14 



Cape Cod, Massachusetts to west 



Florida 



MANGILIA QUADRATA Reeve. Two strong angles 

 on the body whorl characterize this shell; 

 ribs distinct and far apart; color white or 

 yellow, spaces between ribs chestnut brown. 

 Length 9 mm. 



Cape Hatteras, North Carolina to 



Mexico 



MANGILIA QUADRATA RDGIRIMA Dall. Ribs 

 about eight to each whorl; revolving sculp- 

 ture close-set, fine, easily felt by touch; 

 color white or yellow, spaces between ribs 

 sometimes dark; whorls eight. Length 9 mm. 



PI. 52, Fig. 4 



Sanibel, Florida 



MANGILIA STELLATA FILOSA Dall. Shell tur- 

 reted, yellow, touched with red brown; 

 whorls seven, shouldered above, twelve to 

 thirteen ribs; lip much thickened outside, 

 notched deeply near suture. Length 6 mm. 



It has been reported by Dr. Perry 

 as occurring at Sanibel. 



PI. 44, Fig. 11 



PI. 52, Fig, 14 



Tampa to Key West, Florida 



A deep-water 



MANGILIA EXSCOLPTA Watson. 



species. 



PI. 52, Fig. 9 

 Giilf of Mexico 



GENUS DAPHNELLA Hinds 1844 



DAPHNELLA LYMNAEIFORMIS Kiener. (D, decora- 

 ta C. B, A,). Whorls seven, shouldered 

 next to suture; surface covered with rather 

 closely placed light spiral lines which are 

 crossed upon the early whorls by equal sized 

 axial sculpture which upon that portion 

 form a reticulated surface. 



The spiral lines are not uniform in 

 size, large and small ones alternating upon 



