EOLIS. 49 



25. E. pustula'ta, Alder and Hancock. 



E. pustulata, A. & H. Brit. Nud. Moll. fam. 3, pi. 46. f. 4, 5. 



Body rather slender, white, pellucid: dorsal tentacles shortish, 

 linear, rather obtuse, blotched with opaque white at the tips : 

 oral tentacles rather shorter than the dorsal pair, also tipped 

 with opaque white : branchial processes long, linear, obtuse, 

 pale orangecoloured, spotted with minute granules of opaque 

 white ; arranged in 9 or 10 close-set rows, extending close to 

 the tail and with the posterior papillae projecting beyond it : 

 foot having its anterior angles rounded. L. 0-25. 



Habitat : On zoophytes from the deep-water fishing-boats 

 at Cullercoats, rare (Alder). 



Of this species only two individuals have yet been met with. 

 It is distinguished from the other British Eolides by the pus- 

 tulated character of the branchial papillae, which are capable 

 of great extension. The animal has the peculiar power of 

 bending them at right angles. From the great transparency 

 of the skin, the jaws appear through like two brown bands 

 across the front of the head. 



G. Branchial processes in rather distant rows : odontophore 

 denticulated, with the central spine a little prominent. (Ca- 

 volina, Cuvier \_not Abildgaard'].) 



26. E. Cou'chii, Cocks. 



E. Couchii, Cocks in Naturalist, ii. p. 1, pi. 1. f. 2; A. & H. Brit. Nud. 

 Moll. Append, p. x. 



Body rather stout, bluish-black, with opaque-white spots ; 

 anterior parts and tail white : dorsal tentacles rather long, 

 filiform : oral tentacles rather short ; both pairs having opaque- 

 white spots : branchial processes oval-oblong, transparent white, 

 with opaque-white spots ; set in 4 distant rows of 3 papillae 

 each : foot much attenuated posteriorly. L. 1*75. 



Habitat: Under a stone at extreme low-water mark at 

 liwyllyn Yase, Falmouth (Cocks). 



vol. v. n 



