98 POLYPLACOPHn: 



Lr.i'iiH,i'i.i:n:r- BOTT2B Rochchr. Shell elongated, carinated ; 

 olivaceous or whitish, painted with buffftpotf. Anterior valve, and 

 posterior part of the posterior valve, radially widely sulcated. 

 Lateral areas of the intermediate valves trisulcate; central areas 

 longitudinally sulcate, the sulci broad, incurved, very delicately 

 denticulate at the margin. Mar-inal ligament ashy, covered with 

 minute scales. Length 11, breadth f> mill. (Rochtbr. in Bull.Soc. 

 Philom. 1881-'82, p. 192). 



Red Sea (Botta). Rare. Mus. Paris. 



This may possibly be Callistochiton heterodon, but the description 

 U too meager for identification. 



I. i n>>! I.KURUS CONCHARUM Rochebr. Shell ovate, carinated, 

 waxen. Anterior valve, posterior area of the posterior valve and 

 lateral areas of intermediate valves radially minutely striolate. 

 Central areas sulcated, the sulci dentate. Marginal ligament small, 

 waxen, painted with green spots. Length 9, widih 6 mill. (Rochebr. 

 in Hull. Soc. Philom. 1883-'84, p. 33). 



Red Sea. Rare. Mus. Paris. 



5. Philippine Island species. 



C. CALIOINOSUS Reeve. Vol. XIV, pi. 37, figs. 9, 10. 



Shell ovate ; terminal valves and lateral areas of the rest radiately 

 Ftriat* -d. stria* here and there bifurcated ; central areas minutely 

 reticulated. Olive variegated with black; posterior margins of the 

 valves articulated with black. Ligament granosely coriaceous. The 

 articulated painting along the posterior edges of the valves is rather 

 a conspicuous feature in this species. (Rve.) 



Neyros, Ph ilippines. 



C. caliginosus RVE., Conch. Icon., t. 25, f. 172 (May, 1847). 



l>aldy belongs either to Chiton 8.8. or to the section Lepidozona 

 of Ischnochiton. 



CHIT* >N i.i KADiATUsSowb. Shell oval, subelongated subdepressed, 

 obtusely angulatcd. Central areas minutely scabrous-sulcated ; 

 lateral areas subelevated, with two bifid, very irregularly moniliform 

 ribs on each side; terminal areas radially rugose-coMate ; margin 

 most minutely granulose. Color pale tawny, maculated with gray. 

 in L f ray bandi-d. Length '60, width *35 inch. (Sowb. in P. Z. 

 S. 1843, p. 102). 



Dumaguete, Island of Negros, Philippines (Cuming). 



