256 



ENDEAVOUR SCIENTIFIC RESULTS. 



Radula (Fig. 47) Avith seven rows of teeth of simple struc- 

 ture, rhachidian teeth with short, stout, acutely conical 

 points springing from cap-shaped bases ; first laterals a 

 little longer ; second laterals still longer and relatively more 

 slender ; marginals strongly arcuate, bending sharplj'- down- 

 ward, their scimitar-like blades nearly twice as long as those 

 of the second laterals. 



Surface, except forslight wrinkles due more or less directly to 

 the action of the preserving fluid, apparently everywhere smooth 



Color of specimens preserved in formalin a greyish buff, 

 copiously sprinkled above and below with chromatophores 

 of several shades of reddish brown ; strongly tinged with 

 violet on the dorsum, above the eyes, and near the tips of 

 the arms ; arms, pupils of the eyes, and certain other regions 

 opalescent ; lower part of eyeball within the lower lid with 

 a strongly metallic, golden iridescence. 



Measurements. — 



* Measured from beginning of dorsal membrane. 



