12 Gravp^.ly, Notes on the Spawning of Eledone. 



EXPLANATION OF PLATK I. 



Fig. I. Ventral right arm of Eledone cirrosa' witli the suckers 

 arranged in two rows, (r! nat. size.) 



fig. 2. Ventral right arm of Eledone cirrosa* with tlie suckers 

 arranged in one row a little irregularly. {% nat. size.) 



Fig. 3. Ventral right arm of Octopus vulgaris to show the 

 arrangement of the suckers in two rows. (§ nat. size.) 



Fig. 4. Proximal part of an arm of Eledone ciirosa with the 

 suckers of the oral funnel in a single row, those beyond 

 the interbrachial membrane in two rows. (From a 

 diagram kindly supplied by I\Ir. H. C. Chadwick, 

 Curator of the Port Erin Marine IJiological Station.) 



Fig. 5. A row of teeth from the radula of Eledone cirrosa. The 

 number of denticles on each side of the median tooth 

 varies from 2 to 3. ( x 23.) 



Fig. 6. A row of teeth from the radula of Octopus vulgaris. 

 The number of denticles on each side of the median 

 tooth varies from 1 to 2. ( x 23.) 



• The specimens from which these figures were taken have been deposited 

 in the Manchester Museum. 



