209 



Fusus — continued. 



polygonus. . ovate, with many ribs ; transversely rugose ; tlie 



edges of the turns raised against the preceding ? opening 



dentated — Ij inch. 

 ahbreviatus. . ovato-conical, rugous transverse rings ; nodose 



ribs ; columella obsoletely umbilicated — | inch. 

 excisus. . columella as if cut obliquely — | inch. 

 minutus. . ovate, ribs numerous ; transverse striae united in bands 



— very small. 

 asperulus. . ovate, turreted, ribbed, rough transverse striae ; canal 



short — small. 

 plicatus. . ovate, turreted ; ribs smooth, longitudinal; base short; 



no transverse strise — small. 

 scalaroides. . numerous distinct fine ribs, obsolete transverse 



striae ; canal short — f inch. 

 coronatus. . ovate, conical both v^ays ; spire crowned with nu- 

 merous small nodules, lower half finely striated — small. 

 nlligatus. . ovate, turreted, prominent, transverse rugae ; canal 



short — small. 

 marginatus. . fusiform, turreted ; spire nodulous, and the upper 



edge of each turn raised — small. 

 nodulosus. . ovate, small, nodulous ribs ; columella obliquely 



biplicated. 

 angulatus. . fusiform, ventricose ; thick, acutely angular ribs ; 



transverse, prominent striae — 1 inch. 

 uniplicattts. . rough, with ribs and decussating striae ; columella 



with one plait — Ij inch. 

 fimiculosus. . long, fusiform ; transverse rugae, alternating in 



size; columella slightly plaited — 1^ inch. 

 heptagonus. . seven rows of ribs with decussating striae ; colu- 

 mella rather plaited — nearly 2 inches. 

 suhcarinatus . . ovate, short and turgid ribs, angular at their 



ends ; turns carinated angularly, flattish at their tops. 

 Jiculneus. . ovate, almost globular ; about fifteen ribs like folds, 



forming at about two-thirds of their length a row of 



tubercles across the shell ; the base bowed ; columella 



twisted, with an oblique fold — 1 inch. 



Pyrula. 



laevigata. . obovate, very thick, especially on the left side ; 



obtusely striated, the spire pointed — 2 inches. 

 subcarinata. . smooth, back obtusely carinated ; turns concave 



upwards ; spire pointed. 

 tricarinata. . clavated, last turn decussated and with three 



transverse prominent distant striae — Ij inch. 

 elegans. . decussated, the transverse striae raised and undulating. 

 clathrata. . ovately clavated, decussated, the transverse striae 



alternately large and small. 

 nexilis*. . ovately clavated, decussated, the transverse striae 



largest. 



* Murex nexilis — Brand, Foss. fig. 55. 

 E e. 



