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Nudibranchiata Collected in the North Sea by the 

 s.s. "Huxley" during July and August, 1907. 



By 

 C. L. Walton, 



Assistant Naturalist on the s.s. Huxley, 



During July and August, 1907 (Voyages XCII, XCIII, XCIV, 

 XCV, and XCVI), the s.s. Hnxlej worked a series of stations reaching 

 from near Cromer to St. Abb's Plead more or less parallel with the 

 coast line, and also a series furtlier to the north, and extending around 

 the eastern borders of the Dogger Bank. 



Many of the hauls were in and about " roughs," and, as might be 

 expected, a considerable number of species of Nudibranchs were 

 obtained, some of them of considerable interest. The specimens were 

 examined in the living state as thoroughly as circumstances permitted, 

 and as often as possible in their natural environment. Unfortunately 

 in many cases this was impossible, as the animals had become either 

 detached in the dredge or trawl, or were found adhering to the mesh 

 of the nets, and were in consequence more or less injured. 



All the specimens were killed with menthol, preserved in formalin, 

 and subsequently re-examined in the Laboratory at Lowestoft. 



The following species were obtained : — 



Aeolidiidae. 



1. Acolidia papillosa (Linn.). 



2. Aeolidiella alder i (Cocks). 



3. Aeolidiella glauca (A. & H.). 



4. Cuthona nana (A. & H.). 



5. Ampliorina aurantiaca (A. & H.). 



6. Cratena amoena (A. & H.). 



7. Galvina cingulata (A. & H.). 



8. Galvina picta (A. & H.). 



9. Galvina tricolor (Forbes). 



