BRTOZOA FROM FRANZ-JOSEI" LAND. 173 



used by MacG-illivray, and until more is known about tlie tubules 

 it would seem better to place both groups with Diastopora. 



Loc. Waderoarne, Bohus Bay (Smitt). 



Jackson-Harms worth Exp. : two-thirds of a mile S."W. of Elm- 

 wood, 18 fath., 26tli June, 1897 ; off Cape Mary Harmsworth, 

 53-93 fathoms. 



9. DiASTOPOEA INTRICAEIA (Smitt) . (PL 19. figs. 1-13.) 



Reticulipora intricaria, Smitt, Ofvers. Vet.-Ak. Forh. 1871, p. 1117, 

 pi. 20. figs. 1, 2, 3 ; Nordgaard, 0. Mar. Polyzoa, ii. Bergens Museum 

 Aarbog, 1896, p. 5 ; id. Polyzoa den Norske Nordhavs-Exp. 1876-8, p. 19, 

 pi. 1. fig. 12 (1900) ; Biderikap, Bry. von Ost-Spitzbergen, Zoul. Jahrb. 

 vol. X. 1897, p. 632 ; " Die Bry. von Spitzbergen und Konig-Karls Land," 

 ii. Fauna Arctica, p. 528, 1900. 



JDiastopora intricaria, Smitt, op. cit. 1878, p. 13 ; Levinsen, Bry. fra 

 Kara-Havet, Dijmphna-Togtets zool.-bot. CJdb. 1886, p. 325. 



This seems to be one of the commonest species from off Franz- 

 Josef Land, and from these specimens some additions cau be 

 made to Smitt's description. We are, however, at first met 

 with tbe difficulty as to where it should be placed, for it may be 

 called a bilaminate Diastopora, aud three names have been given 

 for bilaminate Diastopora, namely, Mesenteripora (Blainville, 

 1834), Reticulipora (d'Orbigny, 1847), and JBidiastopora (d'Or- 

 bigny, 1847); but probably all should remain under Diastopora, 

 though, should this not be done, then Mesenteripora may have to 

 be retained, dropping the others. 



However, Gregory *, for the previousl}'' recognized genus 

 BeticuUpora of d'Orbigny creates a new genus Reticrisina, but 

 under no circumstances could this new genus be retained. 

 D'Orbigny made the genus JReticulipora for some Cretaceous 

 species, describing and figuring four species, though, following 

 the rule adopted throughout his work, he first mentioned any 

 species already described which he considered belonged to the 

 genus, usually giving them in the order of, the geological forma- 

 tion to which they belonged, and then he described the new 

 species. In this case Apsendesia dianthus of Blainville is men- 

 tioned first, because it comes from the Bathonian of Erance, but 

 in my opinion this in no way justifies us in saying that this is 

 the type of the genus, and Gregory seems to have misunderstood 



* " The Cretaceous Bryozoa," Cat. Foss. Bryozoa in the British Museum 

 vol. i. p. 176. 



