

POL1 PI \' - 'i'ii' .1 [)!> 



Tliis species diflers i'n.ni C/i. pontifYftail in li;i\in- tlio lateral riba 

 bifid, and tin- sculpture LTetierallv more iniiiii 



6. New Caledonian species. 

 CHITON oBsrr 1:1.1.1.1 -s Souverbie. PI. In, li^s. 8, 



Shell OVate-oblong, narrower in front, the back carinat.d; : 



rior valve radially delicately tubercnlate , posterior valve -rarcely 

 Umbonated, the l>eak subapieal. Anterior margins of the l:it*-ial 

 areas a little raised. Entire surface of all valves itw*f ?////////;/, 

 d>nlij granoee-tealy. Color brown ferruginous luster less, with <i 

 articulated with black and white in front of the diagonal border of each 

 lateral area. Girdle most minutely scaly. 



Length 5, breadth 3-1 mill. (S. & M. 



Island of Art, New Caledonian Archipelago. 



Chiton obscurellus Souv., Journal de Conchy 1. 1866, p. 251, t. 9, 

 f. 4. 



The generic position of this species is quite unknown to me. It 

 was described from a single specimen, now in the Bordeaux 

 Museum. 



CHITON SUBASSIMILIS Sou verbie. PL 10, figs. 1, 2. 



Shell ovate-oblong, the back carinatecl. End valves and lateral 

 areas sculptured with numerous radii, more or less anastomosing and 

 subgranulose, being decussated by growth-lines. Central areas lon- 

 gitudinally traversed by well-impressed, subflexuous, suboblique 

 grooves, deeper and more widely spaced toward the outer edges, 

 becoming obsolete toward the median carina, which is smooth ; 

 visibly crossed by fine growth-striae. Entire surface extremely finely 

 shagreened when seen under a lens. Color dark green, with numer- 

 ous longitudinal white lines on the central areas, and small spots of 

 the same color on the end valves. Girdle scaly-coriaceous, with large 

 alternate blotches of olivaceous and ashen. 



Length 20, breadth 9i mill., excluding girdle. (Souv.) 



Island of Art, New Caledonian Archipelago. 



Chiton subassimilis Souv., Journ.de Conch. 1866, p. 254, t. 9, f. 2. 



Described from a single example, which is in the Bordeaux 

 Museum. Souverbie compares it to aasimilis Reeve. 



CHITON TUBERCULOSUS Souverbie. PI. 10, figs. 5, 6. 



Shell ovate-oblong, the back obtusely cariuated; grayish-buff, with 

 a dull white spot on each side of the cariua. End valves margined 



