116 



NILS OPHNER, NORTHERN AND ARCTIC INVERTEBRATES. \ III. OPISTHOBRANCHIA ETC. 



Plate II. 



The numerals in parentheses refer to Ind. Moll. Scand. (Loven 1846). 



Fig- 



1. 





Acera bullata Müller, animal with shell. 







Fig. 



2. 





The same, shell. 







Fig. 



3. 





The same, egg-cocoon. 







Fig. 



4. 





Aplysia rosea Rathke (= punctata Cuvier). 







Fig 



5. 





The same, a younger specimen. 







Fig. 



6. 





The same, shell. 







Fig. 



7. 





The same, spawn on Furcellaria. 







Fig. 



8 



(13 a). 



Archicloris tuberculata Cuvier. 







Fig. 



9 



(30). 



Aea;ires punctilucens Loven from above. 







Fig. 



10. 





The same from the left. 







Fig. 11. 





Dendronotus sp. aberrant form (monstrosity?). 







Fig. 



12 



(16). 



Acanthodoris pilosa var. fusca Loven. 







Fig. 13 (16 a). 



Acanthodoris pilosa Müller, the type. 







Fig. 



14 



(16 b). 



The same. 







Fig. 



15. 





The same. 







Fig. 



16 



(26). 



Palio Lessoni d'Orbigny (= modesta Loven). 







Fig. 



17 



(44). 



Galvina tricolor Forbes. 







Fig. 



18 



(31). 



Tritonia Hombergi Cuvier. 







Fig. 



19 (21). 



Idalia pulchella var. fusca (= I. cirrigera Phil, of 



Loven ). 





Fig. 



20 



(48 a). 



Cuthona nana (under Eolis bellula in Loven). 







Fig. 



21 



(52). 



Plenrophyllidia Loveni Bergh (= Diphyllidia lineata Otto 



of Loven). 



Fig- 



22. 





The same from the right. 







Fig. 



23 



(34). 



Doto coronata Gmelin. 







Fig. 



24. 





Papilla of the same. 







Fig. 



25 



(49). 



Alderia modesta Loven. 







Fig- 



26 



(50). 



Ely si a viridis Montagu (= Plaeobranchus v. Huss, 



Quoy & 



: Gaim of Loven 



Fig. 



27. 





The same from the left. 







