106 POLYPLACOPHORA. 



cular, with 10 radiating ribs. General color of the shell yellowish, 

 with brown spots, darker outside ; white within. (Blainv., Diet. 

 Sci. Nat. xxxvi, p. 548). 



Port of King George. 

 Probably a Plaxiphora. 



CHITON HIKTOSUS Peron. Body oval, wide, a little thick, 

 depressed; the girdle moderate, covered with a multitude of little 

 squamo-spinous tubercles. Shell of 8 valves, as in the preceding 

 species [Liolophura gaimardi], but less long and broader; the mar- 

 ginal stria3 of growth well marked, coarser ; the summits of the 

 areas little pronounced. Anterior insertion-plate very short, having 

 11 pectinated teeth ; that of the posterior valve almost lacking, and 

 entire. General color white, with irregular spots of brown on the 

 girdle. (Blainv., Diet. Sc. Nat. xxxvi, p. 546). 



Seas of the island of King. 



This may be an Onithochiton or a Liolopliura. 



8. New Zealand species. 



ONITHOCHITON FILHOLI Kochebr. Shell ovate, wide, subcarin- 

 ated ; intense olivaceous concentrically ornamented with alternating 

 buff and green lines. Anterior valve radially striated ; posterior 

 part of posterior valve lightly sulcate. Intermediate valves smooth 

 on the central areas ; the lateral areas most minutely radially 

 striated, at the posterior part, strongly and concentrically bi-lirate. 

 Marginal ligament wide, rubescent, silky. Length 29, width 18 

 mill. (Rochebr. in Bull. Soc. Philom. Paris, 1880-'81, p. 120). 



Cooke's Strait (Filhol) ; common. Paris Mus. 



ONITHOCHITON DECIPIENS Rochebr. Shell ovate, wide, subcar- 

 inate ; olivaceous ornamented with concentric buff lines. Anterior 

 valve radially striated; intermediate valves having the central areas 

 smooth ; lateral areas radially most minutely striated, laterally con- 

 centrically bi-lirate. Ligament wide, rubescent, silky. Length 29, 

 width 18 mill. (Rochebr. in Bull. Soc. Philom. 1881-82, p. 196). 

 Cooke's Strait (Filhol). Rare. Paris Mus. 



ONITHOCHITON NEGLECTUS Rochebr. Shell ovate-elliptical, sub- 

 carinated ; brown with scattered buff'or huffish maculae. Anterior 

 valve and posterior part of the posterior valve most minutely gran- 

 ulose. Intermediate valves having the central areas smooth, lateral 



