120 Canon A. M. Norman — Notes on the 



blance, especially when the oral lip is more than usually 

 produced, as in the specimen figured by Hincks (pi. xxxviii. 

 fig. 1) ; but that species may be at once distinguished by 

 the presence of a bitid denticle witliin the mouth ; this den- 

 ticle is deeply seated and is not shown in the figures given 

 by Hincks, though his description is entirely accurate. 



Genus Palmicellaria, Alder. 



60. Pahnicellarla Skenei (Ellis & Solander). 



The variety bicornis (Busk, Crag Polyz. pi. viii. figs. Q, 7) 

 has been recorded by Nordgaard from Svarhoit. 



Genus Smittina, nov. nom, 



= Smittia, Hincks, 1879 (partim), nee S7)nttia, Holmgren, 1874 (Diptera), 

 = Escharella, Smith (partim, nee Eschctrella, Gray). 



Type, Smiitina Landsborovii, Johnston. 



Some of the following species, as well as others which 

 have been described, will not be allowed to remain, in my 

 opinion, in this genus, which no doubt Levinsen will revise ; 

 such species are those in which there is an absence of the 

 "lyrula^^ or tooth-like process behind the avicularium (which 

 is a product of the primary orifice), and there is an absence 

 of the "origelles^^ at the base of the zooecium, and other 

 material differences. 



61. Smittinu Jejfreysi, Norman. 



1876. Lepralia Jeffreysi, Norman, "Biology of 'Valorous' Cruise,"' 

 Proc. Hoy. See. vol. xxv. p. 208. 



1877. LepvaUu trisjnnosa, var., Hincks, " Polyzoa of Iceland and 

 Labrador." Ann. & Mao-. Nat. Hist. ser. 4, vol. xix. p. 160, pi. xi. 

 iig. 1. ' 



1887. Eschar ella trispinosa, var. arborea, Levinsen, Dijmphna-Togtets 



zool.-bot. Udbytte, p. 320, pi. xxvii. figs. 7, 8. 

 1897. Sviitfia trispinoso, vnr. arborea, Bidenka]^, " Bryozoen von Ost- 



Spitsbergen," Zool. Jahrblicher, vol. x. p. 619. 

 19O0. Smittia trlspviosa, var. arborea, Nordgaard, Norweg. N. Atl. 



Exped., Polyzoa, p. 13, pi. i. fig. 9. 

 1900. Smittia trispivosa, var. lamellosa, Smitt, Waters, " Bryozoa 



Franz-Josef Laud," Journ. Linn. See, Zool. vol. xxviii. p. 88, pi. xii. 



figs. 19-21. 



This form or species has has been recorded from the Por- 

 sanger Fiord by Nordgaard. 



It is a common form in the Arctic seas, and very generally 

 rises in free hollow cups or tubes, often branching. Among 

 other characters, this northern form is remarkable for the 

 abundant diistribution of oval avicularia on the zooecia, as 



