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Rh 3 inches in length, with a rather long siphonal canal, and bearing 8 long axial ribs (or former varices) which are blade-like and are curled into long upswept, large spines. With or without small, low, spiral threads which may be more pronounced on the last whorl. Color yellowish to brownish white. Sometimes with subdued, wide brown lines. The form pinnata Dall is a smaller, 8 to 9 ribbed, spirally threaded variant from the same region. Un- common from 21 to 74 fathoms.

Figure 44. a and b, Forreria cerroscusis Dall and, c and d, its subspecies, cataVmen- sis Oldrovd, from California. Reduced ½.

Forreria cerrosensis catalmensis Oldroyd Catalina Forreria Figure 44c, d

Southern third of California.

2 to 3 inches in length, similar to the typical cerrosensis, but with 7 ribs, sturdier shell, with less development of the blade-like ribs, and often with more brownish coloration. Formerly thought to be Boreotrophon triangu- laris Cpr. Moderately common offshore, sometimes cast ashore.

Subfainily MURICINAE Genus Miirex Linne 1758 Subgenus Murex s. str.

Murex cabriti Bernardi Cabrit's Murex Plate I oh

South % of Florida and the Lesser Antilles.