ILLTJSTRA TIONS OF AMERICAN SHELLS— BALL. 539 
BOREOTROPHON BARVICENSIS Johnston. 
This species, described in 1818, is of a southern reticulate muricate 
type, resemblinsf B. murlcatus Montagu. Like the latter, it reaches 
British shores, though its metropolis is to the southward, in 15 to 
1,000 fathoms. It has been reported, erroneousl}", from the American 
coast. 
BOREOTROPHON MURICATUS Montagu. 
This is the Murex muricatufi Montagu, 1808; the FiiMi^^i variahUix 
Cristofori and Jan, 1833; and the Fuhus echinatu^ Philippi, 1836. 
It is a very elegantly sculptured form, extending from British 
waters to the Atlantic coast of Morocco, in 2 to 1,0U0 fathoms. 
Section PAGODTILA Monterosato, 1884. 
BOREOTROPHON CARINATUS Bivona. 
This is the Murex carinatus Biyona, 1822; the M. vaginatns Cristo- 
fori and Jan, 1833; the J/, calcar Scacchi, 1836; Fh-su!< ech/natas 
Kiener, 1838, and the type of the section Pagodula Monterosato, in 
1881. It extends from Marseilles in the Mediterranean to the Atlantic 
coast of Morocco, in 15 to 1,600 fathoms. It is mentioned hero because 
it has been erroneousl}^ reported as haying been obtained near Marthas 
Vineyard on the American coast. 
BOREOTROPHON CLAVATUS Sars. 
This species, which has been confused with B. carinatufi Biyona. 
was described by Sars in 1878. It appears to be confined to northern 
Scandiuayia, though some American forms were, for a time, erro- 
neously referred to this species, a mistake which has since been 
corrected. 
The following species haye been described from the Mediterranean 
and tropical East Atlantic, most of which are deep-water or eyen 
abyssal forms: B. decoratus, B. cossmanni, and B. deversus Locard, 
1897; B. {Tr(>2)Jiono2Jsis) varicosissrmus Bonelli (1841, + mvltilamel- 
/(^/6?/6' Philippi, 1814); B. {T.) drouetl and B. (T.) dahiut/i Dautzenberg, 
1889; B. {T.) ric/ta /rh' a,nd grimaldii Dautzenberg and Fischer, 1896. 
Orcmia Pallary, 1900, appears to be a section of Oclnebra and not 
referable to TropJumopsh. 
The following species are known from the east coast of North 
America: 
BOREOTROPHON TRUNCATUS Strom. 
Arctic seas and south in deeper water to Georges Banks. 
BOREOTROPHON GUNNERI Loven. 
Same distribution a.s the preceding. 
