196 THE CHICAGO ACADEMY. OF SCIENCES. 
situated on the right side near the posterior end of the mantle; 
locomotive disk narrow; tentacles short, blackish, blunt, placed 
very near the lower surface; eye-peduncles long, tapering, 
rather stout, the eyes placed on prominences at the tip, eyes 
blackish; animal exuding mucus from its entire surface (Fig. 8). 
Length, 167.00; width, 19.00; height, 13.00 mill. (10091.) Animal fully ex- 
tended. 
Faw: Long,arched, narrow, endsattenuated and rounded; 
cutting edge with a strong median projection, and a central 
vertical carina or ridge; striated longitudinally and vertically 
(Fig. 43, J). 
Radula formula: 13 +49+37+4+47+45+18 (75-—1—75); 
central tooth with a subquadrate base of attachment, with the 
Fic. 43. 
Radula of LimMAx MAXIMUS Linné. (Original.) c, central tooth; 1, 
first lateral; 15, fifteenth lateral tooth; 50, thirty-third marginal tooth; J, jaw. 
lower, outer corners attenuated; reflected portion large, longer 
than wide, the cutting point about half the length of the reflec- 
tion, and trifid; lateral teeth 17 in number, similar to central 
tooth; marginals of the aculeate type, the first forty-five being 
bifid and the last thirteen of the pure aculeate form (Fig. 43). 
Genitaha: ‘With a strongly lobulated ovary; penis sac 
long, cylindrical, tapering to its apex, where it receives the re- 
tractor muscle and the vas deferens; genital bladder small, on - 
a short duct.” pane 
