122 JOURNAL R. A. S. (CEYLON.) [Vol. III. 



Planaria armata. Kel 



Tentacles folded, but more distinctly formed. Upper surface 

 of a dark-purple colour, covered with short, black spines. 

 Beneath pale-purple, smooth. About inch long, and nearly 

 li inch broad. 



Planaria papilionis. Kel. 



Tentacles as in last species, black, white tipped. Upper surface 

 yellow, covered with small black spines. Beneath pale-yellow. 

 Margin whitish. 



Length about 1 inch. 



Yery like a butterfly moving in the water. 



Planaria purpurea. Kel, 



Tentacles rudimentary. Upper surface of a beautiful purple- 

 colour ; beneath paler purple. 

 About inch long. 



Planaria fusca. Kel 



Upper surface dusky-brown. Beneath paler brown. 

 About H inch long. 



Planaria elegans. Kel 



Tentacles red, situated on the anterior third of mantle, 

 Upper surface pale-yellow, shaded with greenish brown, black 

 dots ; margin black, lined with orange. Beneath whitish. 



Length 1£ inch. 



Planaria thesea. Kel, 



Tentacles white, with red tips, rising from depressions, or 

 cups, placed near the middle third of body. Upper surface of 

 a chocolate-brown colour, edge yellow. Mouth in the middle, 

 below genital organs. Beneath pale-purple. 



Length 1J inch. 



