Ceylon Nudibranchiate Molluscs, and Zoophytes. 115 



than any known species. For 10 or 15 minutes it will keep 

 floating and moving its body like an eel in the water. Very 

 rare ; a few specimens lived for many months in my Vivarium. 



Fam. Eolirze. 



Animal with papillose gills, arranged along the sides of 

 the back ; tentacles skeathless, non-retractile ; lingual teeth 

 0. 1.0; ramifications of the stomach and liver extending into 

 the dorsal papillae ; excretory orifices on the right side ; skin 

 smooth, without spicula ; no distinct mantle. 



EOLIS* HUSSEYI. Kel 



Tentacles 4. Both pairs of the same shape and form-— 

 but the anterior ones longer, of a limped orange hue, tipped 

 with white. Back of a dull orange brown colour ; a triangu- 

 lar white space behind dorsal tentacle. Branchia3 numerous, 

 in 3 rows on each side of body, white and ringed with light 

 purple, tip white. Foot dilated anteriorily, no lateral pro- 

 cesses. 



Bare ; named in memory of a departed and beloved com- 

 panion of my earliest scientific labours. 



Eolis Bicolor. Kel. 



Body f inch long, slender ; waxy white ; a dusky spot on 

 neck anterior to dorsal tentacles. Dorsal tentacles short, 

 smooth, transparent white at base ; corrugated or laminated 

 at apex, of a deep orange red colour, becoming darker at 



* Etym. jEolis, daughter of ^Eo'lus. 



