110 Kev. T. Hincks on Polyzoa 



occuiTed in the Shetland waters ; Caherea ElUsii is common 

 to Shetland and the Hebrides, and Lepralia tuhulosa to Shetland 

 and the north-eastern part of Scotland (Wick). The folio win^^ 

 may be regarded as forming a distinctively Arctic group : — 

 Menipea arctica^ M. SopMce^ Lepralia sincera^ CeJlepora in- 

 crassata, and perhaps Myriozoum coarctatum. Twelve of the 

 Icelandic species have been found on the North -American coast. 

 It should be mentioned that the dredging which supplied 

 the material for the above list was contained in a single bottle 

 of very moderate size. 



Labrador Species. 



The forms recorded in this list were taken in Hamilton's 

 Inlet, at a depth of 15 fathoms, by Dr. Wallich. 



INFUNDIBULATA. 



Cheilostomata. 



1. Menipea ternata, Ellis & Sol. 



2. Cellularia PeacMiy Busk. 



3. Gemellaria loricata, Linn. 

 4. Lepralia annulata^ Fabricius. 



5. Lepralia propinqua^ Smitt. 



6. Lepralia liyalina^ Linn. The prevalent form. 



7. Lepralia pertusa, Esper. 



8. Lepralia radiatula^ Hincks. 



9. Memhranipora lineata, Linn. 



10. Memhranipora cymhceformis^ Hincka. 



11. Cellepora scabi'a, Smitt. 



This belongs to the same group as C. plicata and C. ovata 

 of Smitt, the three being ranked as varieties of one and the 

 same species by this writer. 



In the present form the zoooecia are very short, convex, 

 crowded, and suberect; the mouth orbicular, slightly compressed 

 in front ; immediately below the inferior margin rises a some- 



