588 Canon A. M. Norman — Notes on the 



spines on the lateral margin of the zooecium (ooecia, when 

 present, A'ery shallow and inconspicuous). Pore-chambers in 

 the type three pairs of lateral and one terminal; the latter is 

 sometimes divided into two or even three small chambers. 

 Type, Cauloramphus spinifer {Johnston) (PI. XIII. fig. 1). 



33. Cauloramphus cymbceformis (Hincks). 



1867. Me7nhranipora sjnnifera, Smitt, " Kritisk Forteckning, &c." p. 366, 

 pi. XX. fig. 32 (iiec M. spinifera, Johuston). 



1877. Membranipora cv?;iice/b;v«i.s, Hincks, " Polyzoa of Iceland and 

 Labrador," Ann. & Mag. Nat. Hist. ser. 4, vol. xix. p. 99. 



1881. Meinbranipora spinifera, Vigelius, Zoologischen Ergebnisse 

 ' Willem Barents,' Polyzoa, p. 12." 



1887. Membranipora cymhceformis, Hincks, " Polyzoa of tbe St. Law- 

 rence," Ann. & Mag. Nat. Hist. ser. 6, vol. i. p. 217, pi. xv. fig. 4. 



Vardo, in 1890 : when I took this species it was new to the 

 Norwegian Fauna, but it has since been recorded by Nord- 

 gaard from Hammerfest. Specimens in my collection are also 

 from Spitsbergen [Smitt) and the Gulf of St. Lawrence 

 [Dawsoyi and Whiteaves). 



I have never seen this species on stone or shell ; so far as 

 my observations go, it grows either on branching Polyzoa or 

 Hydroids. 



Cauloramjjhus spinifer has not as yet occurred in Norway 

 either to Nordgaard or myself; its most northern locality at 

 present known to me is Shetland, but it will probably be 

 yet found between tide-marks in Southern Norway. 



Genus Callopora, J. E. Gray. 



Citllopora, Gray, List Brit. Anim. Brit. Mus., Centronise, 1848, pp. 109 

 & 146. 



Type, CallopO'a I'meata, Liune. 



Front Avail entirely membranous. Marginal walls more 

 or less thickened and crowned with spines, which may be 

 many or few. Ooecia globose, of good size, commonly with 

 a rib across the front. Sessile avicularia with acute man- 

 dible at the bottom of the zocEcium and above the ooecium 

 or in a lateral position on one or both sides of the oral 

 opening, or in both positions in the same species. Usually 

 two pairs of lateral pore-chambers and one distal ; size and 

 form of the chamber varying with the species ■^. In 



* It will be understood that two pairs of lateral pore-chambers added 

 to the pore-chambers on the other side of the walls nf the hinder part 

 of the zoo3ciuni iuiplius that there are at least four rosette-plates on 

 the side. 



