178 MR. A. W. WATEES ON 



that Smitt's species is only young colonies of Ldchenopora 

 hispida, Flem., but this is open to question. 



14. Ctlindececium dilatattjm, SincTcs. 



There are a few zooeeia of a Cylindroecium, which I believe is 

 dilatatum ; but with only a few zooeeia, it is difficult to be quite 

 certain as to the specific determination. 



Loc. British and North French coasts ; Bohus Sea ; Jan Mayen 

 {Lorenz). 



Jackson-Harmsworth Exp.: Lat. 77° 55' N., long. 53° 16' E., 

 130 fathoms. 



15. Bfskia niteks, Alder. 



A few colonies growing on Hydrozoa are not sufficient for 

 detailed examination. 



Another species of BusTcia occurs in the Mediterranean, one 

 has been found in the Mergui Archipelago, and one off Cape 

 Horn. 



Loc. Davis Straits, 100 fath. {RmcTcs) ; White Sea ; Barents 

 Sea, lat. 72° 32' N., long. 36° 29' E. (-D' Urban) ; Queen Charlotte 

 Island {H.) ; Mediterranean {H.). 



Jackson-Harmsworth Exp. : off Cape Mary Harmsworth, 

 53-93 fath., and lat. 77° 55' N., long. 53° 20' E., 130 fath. 



Alcyonidium. 



The appearance o^ Alcyonidium is so different from that of most 

 of the Bryozoa, that in all probability it has been frequently 

 passed over, and is more widely distributed than the present 

 records would indicate. 



Erom the Southern hemisphere I only find Alcyonidium men- 

 tioned a few times — namely, Hincks gives Natal as a locality for 

 A. gelatinosum, L., and the ' Challenger ' brought one species also 

 from S. Africa, which Busk named A. flustroides ; MacGillivray 

 mentions none from Victoria ; but Kirkpatrick gives A. mytili, 

 Dalyell, from Port Phillip, and he also described A. jlahelli- 

 forme from the Antarctic, while I have named an Antarctic 

 species A. antarctica. 



My own studies are but limited, and from my collection I 

 cannot criticise this genus, but we appear to know : — 



Akctic : — A. gelatinosum, L. ; A. Jiirsutum, Elcm.; A.mamil- 

 latum, Aid. ; A.mytili,J)alye]l; A. albidu?n, Aid.; A. corniculatvm, 



