BULLIDAE AND AkERIDAE 193 



Bulla strlata36o Bruguiere PI. 39, fig. 281 



Alt., 20-30 mm. Shell with general characters of B. occidentalis, 



apical perforation slightly larger; spirally striate within; narrow 



spiral grooves about base, sometimes a few at shoulder of body 



whorl; columellar callus faintly brown-stained. 

 Sandy stations in shallow water. 



Bulla amyg-(lala36i Dillwyn PI. 39, fig. 282 



Alt., to 40 mm. Shell smooth, solid, oblong-cylindrical, nar- 

 rowed at vertex, mottled and obscurely banded with purplish brown 

 on light background, thin, rather dull epidermis; apical perfora- 

 tion large, spirally striate within; surface without spiral striation, 

 sometimes a few impressed revolvmg lines at base and vertex. 

 "Outer lip thick, heavily calloused where it rises from vertex; outer 

 portion straight, not convex, base broadly rounded; columella arcu- 

 ate, with heavy reflexed crescentic callus, the outer edge of which 

 is well raised from the whorl throughout, leaving a chink behind it; 

 parietal callus strong, white; interior lined with a white callus".^®- 

 Fresh sliells have been found on beaches of Sanibel, Captiva and 

 Bonita Beach, Florida. 



Family AKEBIDAE 



A family of widely distributed small mollusks usually found in 

 shallow water of bays and estuaries. 



The animals are carnivorous. The shells somewhat resemble 

 those of Bulla in shape, but are thin and fragile; unicolored, white, 

 pinkish, amber, or greenish. 



Genus HAMOOEA Turton and Kingston, 1830 

 Hauiinoea succincasss (Conrad) PI. 39, fig. 283 



Alt., 10 mm. Shell small, fragile, cylindrical, pale amber or 

 white; spire involute, vertex with small deep umbilicus; body whorl 

 widest at base; surface evenly striate with minute, wavy spiral 

 lines; aperture long, narrow, expanded below; outer lip thin, sharp; 

 columella arcuate, one weak fold above middle. 



In shallow water on sandy bottoms. 



^^° Lat, striatus, striated. 



^^^ Lat., amygdala, almond. 



^^- Tryon, G. W. and Pilsbry. H. A.: Manual of Conchology. 



^''■'' Lat., hamus, hook? •,'succinum, amber. 



