282 CANON A. M. NORMAN ON THE POLYZOA 



LiCHENOPOEA IRREGULARIS {Jolmson). J. 



1879. Radiopora jmstulosa, Waters, " Bryozoa Bay of Naples," Ann. & Mag. Nat. 



Hist. ser. 5, vol. iii. p. 277, pi. 24. fig. 15. 

 1897, Radio2)ora irregularis, J. Y. Jolmson, Ann. & Mag. Nat. Hist. ser. 6, toI. xx. 



p. 63. 



Mr. Johnson's irregularis is undoubtedly the species well figured by Waters 

 and referred by him to Radiopora jyustulosa, d'Orbigny (Paleont. Fran., 

 Cretace, p. 994, pi. dcxlix, figs. 1-5), but I have thought best to use Johnson's 

 name rather than that of the Chalk fossil, which bears a general resemblance 

 to it. It is quite distinct from the British Lichenopora hispida, var. meandrina, 

 Peach. 



DiASTOPORA PULCHELLA, J. Y. Jolmson. J. 



1897. Diastopora pulcliella, Johnson, Ann. & Mag. Nat^Hist. ser. 6, vol. xx. p. 61. 

 I know nothing of this species. 



Suborder II. CTENOSTOMATA. 



Alcyonidium effusum, n. sp. (PL 35. figs. 7-9.) 



Encrusting foreign substances completely with the coating zoarium. 

 The zoarium is thickly beset with zooecia. These zooecia consist of a 

 peduncle about three times as high as broad, and a crown of 18-20 slender 

 tentacles. This species differs from all the others of the genus known to 

 me in the very slow or the unwilling contractility of the tentacles. The two 

 specimens found were picked out of the sieve and dropped into a bottle of 

 spirit ; and they both still have the mass of their zooecia in a state of fullest 

 expansion, hence the origin of the specific name I employ, effusum. I 

 am not sure what the object is which they clothe, but I think it is a portion 

 of Antipathes. I figure one of these of the natural size ; the second is 

 almost exactly like it except that attached to the Antipathes (?) is a young shell 

 of Ostrea cochlear, and this also is entirely clothed with the Alcyonidium. 



Dredged in deep water. 



LoBiANCOPORA HYALINA, Pergens. 



1888. Lohiancopora hyalina, Pergens, " Deux nouveaux types des Bryozoaires Cteno- 

 stomes," Ann. Soc. Roy. Malac. de Belgique, vol. xxiii. pi. 14. figs. 4-7 

 (separate copy). 

 1906. Lohiancopora hyalina, Calvet, Exped. Sci. ' Travailleur ' et ' Talisman,' Bryo- 

 zoaires, p. 372. 



Dredged by the ' Travailleur ' at Madeira in 400 metres, numerous 

 colonies. 



