PHASIANELLIDAE 1 2 7 



Lower Florida Keys and the West Indies. 



% to M inch in length, moderately elongate, smoothish except for mi- 

 croscopic spiral grooves in some specimens. Color rose to brownish, some- 

 times whitish. Always with numerous small dots of pink, orange or a brown- 

 ish color. Frequently with zigzag, axial bars of rose or brownish yellow. 

 Often with irregular small spots or blotches of opaque-white. Umbilicus 

 slit-like. Moderately common. T. concinna C. B. Adams is probably the 

 same. 



Tricolia tessellata Pot. and Mich, from the West Indies is somewhat the 

 same, but it is characterized by distinct, revolving lines of orange or red 

 that descend obliquely over the whorls. Common. 



Tricolia pulchella C. B. Adams Shouldered Pheasant 



Plate i-jT 

 Southeast Florida and the West Indies. 



Ys inch in length, spiral sculpture of numerous very small spiral cords, 

 the largest being at the periphery of the whorl, thus giving the shell a slightly 

 carinate shape. This carina is more pronounced in the early whorls and 

 commonly bears a spiral row of tiny, white dots. Color variable, usually 

 whitish gray with pink or brown axial mottlings and irregularly placed tiny 

 dots of rose, yellow-brown or purplish brown. Umbilicus a mere chink. 

 Operculum calcareous, convex, half smooth, the other half with fine, arched 

 riblets. Common in shallow water among dead corals. 



Tricolia compta Gould Californian Banded Pheasant 



Crescent City, California, to the Gulf of California. 



/4 to H inch in length, resembling a moderately high-spired Littorina, 

 but distinguished from that genus by its calcareous operculum. Shell smooth, 

 in life covered by a thin gray-green, translucent periostracum. Characterized 

 by the numerous, spiral lines of blackish green, red, brown or purplish which 

 slant slightly downward, so that they are not parallel to the suture. Axial 

 zigzag, wider bands are also present. Very abundant on eel-grass in shallow 

 bays. Frequently washed ashore. 



Genus Eulithidium Pilsbry 1898 

 Eulithidium rubrilineatwn Strong Miniature Pheasant 



Monterey to Lower California. 



Me inch in length, depressed turbinate in shape, with 4 to 5 whorls. Char- 



