108 Canon A. M. Norman— iN^o^es on the 



part of that "which precedes as relates to new g^enera, and also 

 contemplated the formation of some others relating to groups 

 further on, when I received from Herr G. M. R. Levinseu 

 his '^ Studies on Bryozoa." From that short paper I learnt 

 that he was engaged on the rearrangement of the Polyzoa, 

 and that he had made very extensive observations, and was 

 thus in an excellent position to undertake the task. To him, 

 therefore, I leave it as regards the rest of the Cheilostoraata. 

 But as I feel that I cannot use, as though they were my own, 

 many associations of generic and specitic names which have 

 been employed, I shall signify my doubts as to the allocation 

 of the species by printing the generic name within commas; 

 at the same time I would have it to be understood that this 

 only implies doubt, as in many cases I have not subjected 

 the species to special critical examination. 



Genus Hippothoa, Lamouroux, 1821. 



=■ Celleporella, Gray, lS-i^,=:Diazeuxia, JuUieu, 1888, 



Type, H. divaricata, Lamouroux. 



The genera of Gray and Jullieu were founded on the same 

 type, Cellepora hyalina, Linne. 



In my paper, " A Month on the Trondhjem Fiord ^' (Ann. 

 & Mag. Nat. Hist. ser. 6, voL xiii. 1894, p. 130), I wrote :— 

 " Since Jullieu declines even to place them [i. e. Celleporella 

 {Diazeuxia) and Hippothoa] in the same familyj it is better to 

 wait for his further views rather than at once merge Celle- 

 porella in the earlier genus Hippothoa." Death has deprived 

 us of Jullien''s further opinion, and, for the reasons stated in 

 my paper referred to, I now employ the genus Hippothoa. 

 Levinsen has expressed the same opinion, though he '' puts 

 the cart before the horse " when he writes " the species of 

 the genus Hippothoa, I think, must be merged in Diazeuxia " 

 (" Studies on Bryozoa,'' Videns. Medd. Naturh. Forcn. 1902, 

 p. 23, separate copy) ; and Waters has (Journ. Linn. Soc, 

 Zool. vol. xxviii. p. 70) placed C. hyalina in Hippothoa. 



46. Hippothoa hyalina (Linne). 



On shells of Buccimmi, Neptunea, &c. throughout the 

 district *. 



* In my Shetland Report of 1868 I recorded two Polyzoa of very 

 small size and little character under the name Celleporella lepralioides and 

 Calleporella pygmcea. The i'ormer is the same species which Ilincks 

 subsequently described under the name Lagenipora socialis, tlie latter may, 

 I think, perhaps be i)laced in the genus Phi/lactella. 



