On thè Presence of Eyes in thè Shells of Certain 
Chitonidae, and on thè Strncture of these 
Organs. 
By 
H. TV. Moseley, /\, , 
Linacre Professor of Human and Comparative Anatomy in thè University 
of Oxford. 
With Plates IV, V, and VI. 
Introduction, 
On examining a specimen of Schizochiton incisus pre- 
served in spirit amongst a number of other animals dredged 
by Captain W. Chimmo^ R.N., in thè Sulu Sea, in 
Nassau in 1871, and presented by him to thè Anatomical 
Department of thè Oxford University Museum, I was astonished 
to remark on thè shells certain highly refracting rounded 
bodies, arranged in rows symmetrically ; they struck me at 
once as resembling eyes, and further examination proved that 
such is, in fact, their nature. On searcbing for eyes on thè 
shells of other Chitonidae I found them present in many other 
genera, differing, however, in each genus more or less in struc- 
ture and arrangement. I published a preliminary summary 
of what I had been able to determine concerning these eyes 
in thè ^ Annals and Magazine of Naturai History^ for August, 
1884. In thè present paper I enter further into details, and 
bave thè advantage of elucidating my results by means of 
figures. 
