Ill 



bereulatus MS nfrt'ii-rii/i'fil ; and oddly enough, mie of 1 In- 

 collected l.y I >r. II. Sharp at Toba-" i- aUo apparently .--v.-n-\ alved, 



having two of the valvei linnly loldered lit of an 



early injury. It is likely that the B6VOT and -ix-valved ( 'hit-. us 

 :ihed by early author.- were partly abnormal specimen- of tins 

 c'haraeter. and the rest \v iv (minded upon careless and MOO] 



Bgur 



Color-var. Color a uniform dull blackish ; rihlets of the central 

 area- finer and coim-r^ini: near to the median line. Area behind 

 the sinus in-ide, and the slit-rays solid, not spongy or pon.u-. 



nuda. 



I have 8681) a -reat number of specimens, but mostly BO <-roded 

 that the permanence of the characters could not be decided. 



Yar. ASSIMILIS Reeve. PI. 33, figs. 61, 62. 



Fawn colored, with white dots on the lateral areas, the ctirina 

 handed with brown ; girdle light green. Central areas mtj>tured 

 with very fine, close riblets. Interior having the >lit-rays and the 

 area behind the sinus porous. 



St. Thomas to Barbados. 



Chiton f/.Wm/7/x KI:I:VK, Conch. Icon., t. 14, f. 76 (right hand 

 figure) ; f. 77b. (March, 1847.) 



Color-var. ater. (pi. 33, fig. 63). Shell having the close fine 

 sculpture of assimilis, but black in color, dark green-blue inside. 



St. Kitts (Rush) ; Tr'>ni<L,<l (Sharp.) 



C. SQUAMOSUS Linne. PI. 85, figs. 80, 81, 82. 



Shell oblong, elevated or rather depressed, carinated, the side- 

 slopes somewhat convex. Surface of lateral areas minutely headed- 

 central areas smooth ; lusterless. Color butt' (pale or deep in t 

 the central areas regularly and oonspicuotuly striped longitudinally 

 with gray or black, most valves having a wider dark blotch on each 

 side of the keel, and a series of spots along the back edge. 



The lateral areas and en<\ vtlues are raised n/i<! sculptured trith 

 radiating rows of fine beads, the number of rows increasing by inter- 

 polation ; and under a lens the surface is seen to be ininntt'lij j>uitct>tte. 

 Cf-nfrn/ urcua not sculptured, save for inconspicuous growth-lines. 

 MIKTO of posterior valve near the front margin. 



Interior dark blue-green, the sutunil plates lighter. Sinus rudely 

 denticulate. Anterior valve having 12, central valvt > 1. p >-terior 



