OF NORTHUMBERLAND AND DURHAM. 21 



From the fishing boats, Cullercoats; rare. — J. A. 

 This is also nearly allied to E. pa'pillom, and requires further 

 observation for its complete establishment. 



4. E. Peachii, Aid. and Hanc. 



Eolis Peachii, Aid. and Hanc, in Ann. Nat. Hist. 2nd 

 series, i. 191. 

 One specimen obtained from the fishing boats, Cullercoats. — J. A . 



5. E. coronata, Forbes. 



Eolis coronata, Aid. and Hanc. Mon. Nudib. Moll., fam. 3, 

 pi. 12. 

 This very beautiful species is one of the commonest on our 

 coast, near low-water mark. 



6. E. curta, Aid. and Hanc. 



Eolis curta, Aid. and Hanc. in Ann. Nat. Hist. xii. 234. 

 One specimen found among the rocks, at Whitley. — A. IT. 

 Very nearly allied to E. Drummondi, of which it may be a 

 variety. 



7. E. rufibranchialis, Johns. 



Eolidia rufibranchialis, Johns, in Ann. Nat. Hist. i. 121. 

 Among the rocks between tide marks, rather rare. Cullercoats 

 and Whitley. 



8. E. PELLUciDA, Aid. and Hanc. 



Eolis pellucida, Aid. and Hanc. in Ann. Nat. Hist. xii. 

 234. Mon. Nudib. Moll., fam. 3, pi. 19. 

 On a coralline brought in by the fishing boats at Cullercoats, 

 very rare. — A. H. 



9. E. GRACILIS, Aid. and Hanc. 



Eolis gracilis, Aid. and Hanc. in Ann. Nat. Hist. xiii. 

 166. 

 Among the rocks north of Cullercoats, rare. — A. H. New- 

 biggin. — J. A. A variety occurs, smaller, less slender, and with 

 the branchiaa of an orange colour : it may be distinct. We have 

 also met with an Eolis, apparently belonging to this species, but 

 with the branchiae of a beautiful green colour. So great a vari- 

 ation in colour is not usual in the genus. These varieties re- 

 quire a re-examination, but the rarity of the species has hitherto 

 prevented it. 



