MURICIDAE 



201 



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 y_>. 



Forreria cerrosensis catalmensis Oldroyd 

 Southern third of California. 



Catalina Forreria 



Figure 44c, d 



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 



South % of Florida and the Lesser Antilles. 



Cabrit's Murex 



Plate I oh 



