5 



Fam. Glaucea. 

 X. Eubranchus, nov. gen. Corpore ovato, con- 



vexiusculo ; tentaculis quatuor ; ocuHs nullis ; 



dorso branchus ovatis instructo. 

 1. tricolor, n. s. 



Corpore albo-carneo ; branchus pyriformo- 

 ovalis tricoloribus. Long. J. un. Lat. \. 

 Animal pinkish-white, ovate, with four true ten- 

 tacula, the two upper ones longest. It has no eyes, 

 and the back is closely covered with large translu- 

 cent, subpyriform, homogeneous branchiae, which are 

 remarkable for their brilliant colouring, being tipped 

 with bright opaque yellow, whilst their centres are 

 deep purple, and their bases rose-pink. 



The nearest allies of this species are the Doris 

 longicornis, and Doris coerulea of Montagu, which 

 constitute the genus Montagua of Fleming. From 

 that genus it is excluded by its ovate form, by the 

 absence of eyes and lateral papillae, and by the 

 different arrangement of the branchiae. Regarding 

 those characters as generic in this family, I have 

 deemed it necessary to create a genus for the recep- 

 tion of this very beautiful animal, which I had the 

 good fortune to dredge in 20 fathoms water on the 

 coast of Ballaugh, in September 1836. It was taken 

 when adhering to a coralline. 



