230 NUDIBRANCHIATA COLLECTED IN THE NORTH SEA 



In both the papillae were for almost their whole length of a dull 

 green, freckled with opaque white, no red being seen. 



In (a) the head and body were as figured by Alder & Hancock ; in 

 (b) the oral tentacles were much paler, and the head and rhinophores 

 of a dull uniform red. 



The animals showed little activity, but both crawled on the surface 

 film on several occasions. 



E. Hecht {Contribution it Vetndc des Nudibranches, 1896) sa3^s of this 

 species : " Kemarquable par la variabilite de sa coloration, qui est 

 parfois plus foncee que celle indiquee par Alder et Hancock, et plus 

 souvent d'un jaune grisatre." 



CUTHONA NANA, A. & H. 



Voyage XCII. Station 45. Edge of Sylt Outer Rough. 13 fathoms. 



Several specimens. 

 Voyage XCII. Station 46. Edge of Sylt Outer Rough. 13 fathoms 



Several specimens. 

 Voyage XCIII. Station 9. N. of Dogger Rough. 13 fathoms. Several 



specimens. 

 Voyage XCIII. Station 19. Bruecy's Garden. 27 fathoms. 6 specimens. 



Most of the specimens obtained were small, four of those from 

 XCIII — 19 measuring y, 8, 6 and 4 mm. 



All were feeding upon Hydractinia echinata. 



Those from XCII — 45 were upon a large specimen of Jlyas coardatus, 

 which was almost covered with a growth of Hydractinia. Some nine 

 individuals, mostly small, were clustered upon the under side of the 

 head of the crab, and several others upon the crapace. All were of 

 a transparent white, the papillae having a light chestnut or pink core. 



Those obtained at the other stations were upon Hydractinia, encrust- 

 ing the shells of Natica monilifcra and Buccinum. Leslie and Herd- 

 man {The Invertebrate Fauna of the Firth of Forth, 1881) also record 

 C. nana on Hydractinia at " Morrison's Haven," collected by Dr. T. 

 Strethill Wright. 



AMPHORINA AURANTIACA (A. & H). 



Voyage XCIV. Station 47. Outer Dowsing Ground. Lat. 53° 28|' N. 

 Long. 1° 93' E. 14^ fathoms. 1 specimen. 

 Length 1 cm. The specimen difiered slightly from Alder and 

 Hancock's plate and description, the rhinophores being wrinkled and 

 slightly shorter than the oral tentacles. The white area below the 

 tips of the papilla3 very faint ; the animal was damaged, and many 

 of the papill.ie were missing from the posterior region. 



