CHI 



The shell is oldon-, a 1 it I le ea ri mite, I ; the intern 

 xillnnf/i nt tin fiiriiiii, iiKirlcrtl nu < nr/i *i<l< ///'/// *lr<nnj , ':it<'d 



l>y deep grooves; the ////// <n-^ an <///////// .<////o///, :is well as the 

 end valvrs. The -ii'dle is wide, exten-il.le, covered with little 

 oblong. smooth ami polished scale-, larire.-t in the middle of its 

 width. 



The coh>i> are verv variahle : sometimes marbled with Mark and 

 brown spots on a white ground, sometimes with some valves quite 

 Mack or ^roi'ii. the others spotted. Tin- irirdle i> radiated with 

 Mark, gray and white. (Orb.} 



CHIHH-II [. (Webb and ]>erthelot.) 



( '. rinmrieii*i OKI;., in Webh tt Berth., Hist. Nat. des lies Canaries, 

 Moll., p. !W. t. 7, f. 16-11). Chiton (JLophurw?) riiiini-irii.*!*, SHUTTLW., 

 Bern. Mittheil. 1853, p. 81. 



Allied to C. o///wr//x, but differs in having the lateral areas and 

 end valves smooth. The interior, according to Shuttleworth, is 

 green, with spots of rose and purple. This species should be com- 

 pared with C. lifrntti* Sowb. 



C. TULIPA Quoy & Gaimard. PI. 31, figs. 43-49. 



Shell oval-oblong, elevated, acutely carinated, the side-slopes 

 nearly straight. Snri'nrr #ntonth and polished throughout. Ground- 

 color buff or whitish, suffused and closely mottled all over with red- 

 dish-chestnut, fawn, or purple-brown ; usually longitudinally streaked 

 on the central areas, zigzagged or tessellated on the end valves, and 

 articulated on the diagonal lines with the darker color. Sometimes 

 parts of some valves, or several whole valves are of a uniform dark 

 brown color (figs. 43, 45.) 



The central areas are smooth except for slight growth-lines and a 

 microscopic granulation which covers the whole surface. Lutrnil 

 areas /'>// /<//>"/, flat, rarely with slight radii, smooth. In the 

 excavation at the diagonal line a lens shows a few very short longitu- 

 dinal grooves, in some specimens. Tail valve elevated, ////// rr///,W 

 wnbo. 



Interior very light blue-green, each valve rayed with brown at 

 the beaks. Anterior valves having 8, central valves 1, posterior 

 valves 12 slits; teeth pectinated. Eaves short, spongy, grooved 

 along the teeth. Sinus narrow, denticulate. 



