SERPENTARIA. 29 



Planaria flaccida, Johnston in Zool. Journ. iii. 488. 



Borlasia? flaccida, Johnston in Ann. <^- Mag. Nat. Hist. xvi. 435. 



Gordius fiiscus, Dulyell, Pow. Creai. ii. S3, pi. 12. 



Hab. The coralline region. 



Obs. As the specific wkvciq flaccida was given to this fine species 

 under the erroneous conclusion that it was the Planaria flaccida of 

 Miiller, the name has heen dropped for one more appropriate. 



(a) Berwick Bay, I)r. Johnston. 



{b) Firth of Forth, Lieut. ThomaSy R.N. 



