'108 



J. F. ABBOTT; 



to axial orientation. Two semicircular bands of yellow cells, probably 

 glandular, surround the otolith at the l äse 



Coeloplana willeyi. v v- 



Average size:— one to two centimeters across. Very conti actile 

 and extensible ; amoeboid in movement. When killed, roughly circular 

 in shape. In life, no consistent body-shape is maintained. Dorsal 

 tentacles club shaped or cylindrical, — not branched or fringed. Color 

 scarlet or carmine red, fading towards the edges to a yellowish pink. 

 Chalky white spots about margins. Color deepest along the raised axis 

 of the tentacle sheaths. Dorsal tentacles frequently with yellowish 

 blotches at the b;is j s. 



Coeloplana milsukurii. V -v- 



Smaller than the C. wiUeiji ; average size one centimeter or less. Dody 

 firmer, not amoeboid, consistently oval or almost circular. Prominent 

 notch opposite tentacles. Dorsal tentacles with two to five digitate 

 processes. Not nearly so contractile as C. willeyi. Arrangement of 

 dorsal tentacles approximately in a figure 8, with the extremities of the 

 figure interrupted, the intersecting lines at the sense organ. Color ;— 

 dirty brown or brownish yellow. Less transparent than G. willeyi, 

 frequently entirely opaque. 



The two species are found together. 



Oct. 1st, 1902. 



