On Polyzoafrom Iceland ami Lahnidor. 97 



scries of five spots, all small : secondaries below very (lifTercnt 

 from P. vmcuhttus^ sordid white ; a rather broad olivc-brown 

 band, shorter than the darker band of P. viaculntus, and 

 crossed by white veins, indistinctly bordered with white inter- 

 nally, and broadly white-bordered externally ; the interno- 

 me(lian, first median, and discoidal interspaces irrorated with 

 the same brown (beyond the white border) ; external area 

 broadly brown, its inner half blackish ; no trace of the angu- 

 lated submarginal white streak common to P. maciilatns ; 

 frini^e white, spotted with brown. Expanse of wings 1 inch' 

 ^ lines. 



I have seen several examples of this species. 



VIII. — On PoJyzoa from Iceland and Lahrador. 

 l?y the Rev. Thomas IIixcks, B.A., F.R.S. 



[Plates X. & XI.] 



The species noticed in the present paper were obtained by 

 Dr. Wallich off the coasts of Iceland and Labrador. For the 

 opportunity of examining them I am indebted to Mr. Busk. 

 Some new forms occur amongst them ; and they have besides 

 their special interest as illustrating local variation and geo- 

 graphical distribution. 



The material which I have dealt with in this paper has 

 been for a very long time in my hands, but after partial exa- 

 mination was laid aside under the pressure of other engage- 

 ments. 



IcELANDif Species. 



Order INFUNDIBULATA. 



Suborder Cheilostomata. 



Genus Hippothoa, Lamx. 



1. Hippothoa expansa^ Norman. 



A single specimen of this foiTn occurs on shell. Off Rei- 

 kiavik, in 100 fathoms, amongst icebergs.^ All the Icelandic 

 species were taken in tliis locality. 



[Arctic 8ca.s, not uncommon {Nonnan, ' Valorous ' dredg- 

 ings) ; Shetland {id.).] 



Ann. tfc Mo(/. X. Hist. Ser. 4. VoL xix. 7 



