210 



Pyrula continued. 



bulbiformis* . . ovate, ventricose, rather smooth ; spire hooked ; 



tail rather bowed ; the left side thickened as by a callus 



on the columella 2| inches. 

 terehralis. . girt with transverse and granulated striae ; whirls 



dentatedly carinated, spire like a screw small. 

 citharellus. . tnrreted, with smooth narrow ribs ; base short 



small. 

 Icevigatus. . fusiform and turreted ; spire smooth and conical, 



with a mammillary termination. 

 striatulus. . fusiform and turreted ; the turns flat on their tops 



and sides, with very fine equal strise very small. 

 biplicatus. . ovate, transversely striated ; longitudinal ribs ; 



columella with two folds very small. 

 variabilis. . many ribbed, turns subangular small. 

 truncatulatus. . ovate and turreted, the margins of the spiral 



turns truncated, the spire plicated small. 



Pleurotoma. 



filosa. . ovato-fusiform, lip alaeform 1| inch. 



lineolata. . ovate-fusiform var. ? 



clavicularis. . fusiform, turreted, whirls bordered with striae on 



the upper part, lip alated 2 inches. 

 glabrata. . fusiform, base transversely grooved 1 inch. 

 marginata. . turns bordered upwards by a cord-like margin, and 



separated by two or three grooves with sunk points. 

 transversaria. . fusiform, deeply grooved transversely, whirls 



carinated 2| inches. 

 catenata. . fusiform, decussated ; the transverse strise strongest, 



like a chain of tubercles on every turn 2 inches. 

 dentata. . fusiform ; a dentated keel on each turn 1^ inch. 

 undata. . fusiform, turreted ; whirls crenulated, with undulated 



ribs on their upper part, the tail short 1 inch. 

 multinoda. . fusiform, turreted ; whirls submarginated, nodulous 



in the middle | inch. 

 crenulata. . fusiform, turreted ; straight ribs, like cogs of a 



wheel on each whirl f inch. 

 bicatenata. . fusiform, turreted ; with two rows of nodes on the 



upper part of the whirls f inch. 



costellata. . oval, fusiform; whirls with longitudinal ribs i inch. 

 plicata. . fusiform, turreted ; whirls with rather curved plaits. . 



small . 

 sulcata. . fusiform, turreted ; decussated in the lower part ; 



whirls with longitudinal ribs. . small. 

 curvicosta. . ovato-fusiform ; bent ribs, as if split or bifid at their 



tops. . f inch. 

 furcata. . whirls, with ribs contracted above their middle, and 



forked underneath. 



* Murex bulbus Brand, Foss. fig. 54. 



