284 



American Seashells 



Ys to I inch in length. General color varying from red-purple to pale- 

 rose, sometimes with bluish-white spots. There is a vivid, iridescent blue 

 border on the head disk and the "wings." Found for the first time in the 

 western Atlantic by Harold J. Humm in 1950 at Alligator Harbor, Florida. 

 Rare? This is probably G. meckeli "Dall." 



FuiUKE 60. Animals of some Tectibranchs. a, Hmmnoea (side view, X3); b, 



Fhilijie (X3); c, Scaphander (Xz); d, Acteocina (X3); e, Gastropteron (X5); 



f, Bulla '(X3); g, Aplysia (Xy.); h, Bmsatella (Xy.). (After Guiart 1901.) 



