.in 1 1 ; I 



Tin- lateral . \ n-\ lilt !< rai-ed, and sculpt im-il wit li a 



10 small suholxoletc radiating rililets : central area- !.. --ly and 

 linely sculptured with longitudinal nUeis separated l.y ! 

 interstice-. I'.^terior valve having tin- limbo near tin- front DUU 

 tlie slope behind it straight. 



Interior light l)lue; sutural plates wide; sinu- square, finely 

 toothed. Anterior valve bavin-' '> 1-, cent ral valve- 1. post 

 valve I'J 11 slits; teeth stout, blunt, deeply pectinated. Kave- 

 sliort and narro\v, spun. 



(iirdle - lig. -\ > strong, covered with .shining, convex, imbricating 



seal 



Lentil) '.)">, breadth 60 mill.; divergence 120. 



Valparaiso, C '// /'//'. 



Chiton mitgnijicus I)n., Diet. Class, des Sc. Nat. xii, p. 4-V> : 

 I-jicycl. ^Feth., p. 680; Lam., An. s. Vert., ed. Dh., vii, p. 498. 

 J{I-:I-:VK, Conch. Icon., t. 1, f. 3. Chiton latus SOWERBY, Catal. Sh. 

 Tankerv., appendix, p. v, (not Ch. latus Lowe). Chiton olivaceus 

 FREMIM.Y. Zool. Journ. iii, p. 199, Suppl. pi. 16, f. 4. Cliiton 

 nfrlnhi* UAUNKS, Amer. Journ. of Science vii, p. 70, t. 3,f. l.(1824). 

 Not ('. ttriiifns of authors. 



This large olive-black, blue-dotted species is remarkable for the 

 evenness and smoothness of its sculpture. It is an unusuallv hand- 

 some Chiton. 



C. MURRAYI Haddon. PI. 29, figs. 15-21. 



Shell apparently smooth, but really very closely and finely 

 striated, the striae being roughened or interrupted ; greatly depre 



Anterior valve with radial stria-; under surface with eleven dis- 

 tinct square slits, radial grooves distinct and perforated; teeth of 

 insertion plate serrate. Intermediate valves narrow, tlatt. 

 non-carinate, with sharp depres.ed umbo, surface stria? longitudinal 

 in central areas, radial in the lateral areas; lateral areas distinct, 

 with slight-concentric ruga-, and with three or four >carcely apparent 

 peripheral radial ridges, which die away toward the apex ; sutural 

 laminae shallow, a single lateral slit, lateral insertion plates Ben 

 juguni with nine rounded teeth, the central beiinr verv small. Pos- 

 terior valve flattened, slightly umhonatc, stria- longitudinal on 

 the anterior area, radial on the posterior an -a : under surface with 

 seventeen distinct slits, teeth serrate : jugum finely toothed. 

 11 



