58S Canon A. ^I. Norman — Notes on the 



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

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

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

 sometimes divided into two or even three small chambers. 

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



33. Cauloramphus cymbcBformis (Hincks). 



1867. Memhranipora spiyiifera, Smitt, " Kritisk Ftirteckning, &c. " p. 366, 

 pi. XX. fig. 32 (nee M. spinifera, Johnston). 



1877. Membraniporu cymbci'formis, Hincks, " Polyzoa of Iceland and 

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



1881. Membranipora spinifera, Vigelius, Zoologischeu Ergebnisse 

 *^yillem Barents,' Polyzoa, p. 12. 



1887. Memhranipora ci/mb(pforrnis, 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 

 jSTorwegian 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 

 {Dawson 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. 



Cauloramphus 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. 



Callopora, Grav, List Brit. Auim. Brit. Mas., Centi'onije, 1848, pp. 109 

 & 146. 



Type, Callopora lineata, Linue. 



Front wall entii'ely membranous. Marginal walls more 

 or less thickened and crowned with spines, which may be 

 many or few. OcEcia 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-cbambers added 

 to tbe pore-cbambers on the other side of the walls of the hinder part 

 of tbe zocecium implies that there are at least four rosette-plates on 

 the side. 



