LUTKEN ON THE TUNICATA OF GREENLAND. 139 



are only imperfectly known, and others remain undescribed 

 in collections. The Compound Ascidice are rather numerous, 

 but no attempt has been made to identify them. ^^ Alcyo7iium 

 rubrum and digitatum" F. Gr. 462 and 463, probably belong to 

 this division. " Synoicum turgens " owes its introduction into the 

 " Fauna of Greenland " to a mistake. 



XIII. — The PoLYzoA of Greenland. By Dr. Chr. Lutken, 

 University Museum, Copenhagen. 1875. 



This List is an abstract from Dr. Smitt's Monograph of the 

 Scandinavian and Arctic Polyzoa in the "Proceedings of the 

 Swedish Academy " for 1864-8, to which work the reader is 

 referred for further particulars. References to Kirchenpauer's 

 list of Polyzoa from East Greenland, in " Die zweite deutsche 

 Nordpolarfahrt," are added.* 



1. Cyclostomata. 



1. Crisia eburnea (L.). 



2. Diastopora simplex (Busk). 



3. Diastopoi-a hyalina (Flemg.). 



Kirchp., p. 426. 



4. Mesenteripora mceandrina (Wood). 



5. Tubulipora atlantica (Forb.). 



Idmonea atl. (Forb.), Kirchp., p. 427. 



6. T, fimbria (Lmk.). 



T. serpens, Fabr. F. Gr. 428. 



7. T.flabellaris (Fabr.). 



Fabr. F. Gr. 431. 

 Phalangellaji., Kirchp., p. 427. 



8. T. incrassata (D'Orb.). 



9. T.fungia (Couch). 



10. T. penicillaia (Fahr.). 



Fabr. F. Gr. 430. 



11. Hornera lichenoides (Fabr.). 



Fabr. F. Gr. 436; Kirchp., p. 425. 



12. Discoporella verrucaria (L.). 



Fabr. F. Gr. 432 ; Kirchp., p. 427. 

 12a. D. hispida, (Fl.). 

 Kirchp., p. 427. 



13. Defra7icia luceimaria (Sars). 



2. Ctenostomata. 



14. Alcyonidium hirsutum (Flemg.). 



Kirchp., p. 428. 



15. A. gelatinosum (L.). 



Kirchp., p. 428. 



* The " /s«s," " Tabipora,'' " Madrepora,'' and " Millepora " of Fabricius 

 are apparendy all Polyzoa, with the exception of Nos. 438 {NulUprora, sp.) 

 ^ndi \M {CoralUna officinalis?). 



