224 



city to the rocks, that a clasp knife is brokeu iu endeavouring to 

 loosen them. The natives reraove them with bayouets and eat 

 them. 



88. PoMAX)LAx UNDOsus, Mawe. 



Trochus undosus, Wood, Suppl. pi. 5. f. 1. p. 16. 

 Hab. Monterey. Mus. Nutt., Brit., Cuming. 



— 89. Trochiscus Norrisii, Sow. 



Hab. Monterey. Mus. Nutt., Brit., Cuming. 

 The young shell (teste Nuttall) has scarcely any umbilicus, and 

 has a small tooth m the mouth. 



— 90. Trochus filosus, Wood, Suppl. pi. 5. f. 23. 



= Trochus ligatvs, Gould, Exp. Sh. p. 55. 



= T. castaneus (Nutt. MS.), Forbes, P. Z. S. 1850, p. 271. 



Var. = 2'. doliarius, Gould, MS., non Chem. 



? Var. = Ziziphinus annulatus, A. Ad. P. Z. S. 1851, p. 164 = 

 Trochus virgineus, Gould, MS.,non Mart. hi Lam. An. s. Vert. vol. ix. 

 p. 144. no. 51. 



=:Trochus virgineus, Chemn. 



The Laniarckiau species are said to come from New Zealand, and 

 are probably allied forms. If that should prove incorrect, the name 

 of Wood will give way. As it is, so indifferent a figure scarcely 

 deserves precedence of the described species of Gould. Mr. Nuttall 

 considers the two Californian forms conspecific. 



91. Omphalius ater, Less. 



= T. gailina, Forbes, P. Z. S. 1850, p. 2/1. 

 Hab. Cahfornia. Mus. Nutt., Cum., Brit., &c. 



92. Omphalius fuscescens, Phil. 



= Trochus luridus, Nutt. MS. 



Hab. Sta. Barbara. Mus. Nutt., Cum., Brit. 



93. Omphalius marginatus, Nutt. 

 Hab. California. Mus. Nutt., Brit. 



-- 94. Omphalius aureotinctus, Forbes. 



Trochus aureotinctus, Forbes, P. Z. S. 1850, p. 271. 



? =Trochns pallidus, Nutt. MS. 



= T. cateniferus, Poliez, teste Gould. 



Hab. California. Mus. Nutt., Brit., Cum. 



~~ 95. Crepidula rugosa, Nutt. MS. 



Cr t. " Cr. onici" simili, sed epidermide nitente, tenui, adhce- 

 rente ; vertice nucleoso Velutince-formi ; t. Jumore intense atro- 



