STROMBIDAE 17 3 



"It is generally admitted that the camouflage of Xe?iophora is for protection 

 rather than ornamentation, for it would be inconceivable that a female 

 Xenophora would call over the back fence to her girl friend with, 'Come 

 and see the perfect dream of a shell I picked up today and tell me if I have 

 it on straight.' " 



There are 3 species in the Atlantic, one a shallow water species, the other two 

 (longleyi Bartsch, pi. 23d, and caribaea Petit, pi. 2 3e) deep water inhabit- 

 ants. 



Xenophora conchy liophor a Born Atlantic Carrier-shell 



Plate 5b 



North Carolina to Key West and the West Indies. 



2 inches in diameter, not including foreign attachments. No umbilicus. 

 From above, the shell with its attached rubble and shells looks like a small 

 heap of marine trash. It will attach any kind of shell to itself, but in some 

 areas has access to only one kind, say Chione cancellata. Animal bright-red. 

 Seasonally not uncommon. Johnsonia is in error in calling this trochiformis 

 Bom 1778 (not 1780), which is the Peruvian shell known formerly as 

 Trochita radians Lam. 



Family APORRHAIDAE 

 Genus Aporrhais da Costa 1778 



Aporrhais Occident alis Beck American Pelican's Foot 



Plate 23c 



Labrador to off North Carolina. 



2 to 2% inches in length, spire high, whorls well-rounded and with 

 about 15 to 25 curved axial ribs per whorl. Many minute spiral threads 

 present. Outer hp greatly expanded and its edge heavily thickened. Color 

 ashen-gray to yellowish white. Operculum small, corneous, brown, claw-like, 

 but with smooth edges. Commonly dredged off New England from a few 

 to 200 fathoms. 



The form mainensis C. W. Johnson (Nova Scotia to Mt. Desert) differs 

 in having 14 axial ribs, instead of about 22 to 25 as in the typical form, 

 but specimens intergrade. The form labradorensis C. W. Johnson is smaller, 

 more slender, and with up to 29 ribs per whorl. 



Fajnily STROMBIDAE 

 Genus Strom bus Linne 1758 



Strombus pugilis Linne West Indian Fighting Conch 



Plate 5g 



Southeast Florida and the West Indies. 



