NOTES ON THE DESCRIPTIONS OF THE SPECIES. 



Catenaria hicornis, Busk (PI. I. fig. 1). 



Catenaria biccyrnis, Busk, Zool. Chall. Exp., part xxx. p. 14, pi. ii. fig. 2. 



Below the oral aperture there is a median band of thicker deposit about the centre 

 of the zooecium, turning to each side and again dividing. The perforations are placed 

 somewhat irregularly all along the band, and there does not seem to be any pore with a 

 different function to the others, as the term central pore might lead us to expect. 

 There is also an elongate slit at right angles to the end of each band (see figure). The 

 zocecia along the central line of the colony are about twice as long, and stouter than 

 those branching off' from it. This is slightly shown in Mr. Busk's figures, but is more 

 marked in the specimen before me. 



Scrupocellaria marsupiata, JuUien. 



Scrupocellaria marsupiata, Jullien, Dragages du Travailleur, Bull. Soc. Zool. de France, torn. vii. 



p. 507 (sep. p. 10), pL xiii. figs. 17, 20, 1882. 

 Menipea clausa, Busk, Zool. Chall. Exp., part xxx. p. 20, pi. iv. fig. 5. 



JuUien finding a single dorsal vibraculum on the specimens he dredged, placed them 

 under Scrupocellaria, and considers that this shows that Menipea and Scrupocellaria 

 should be united. Not having JuUien's observation in my mind when looking through 

 the British Museum specimens, no notes were taken relating to the dorsal surface, but 

 I since wrote to Mr. Kirkpatrick calling his attention to Jullien's paper, and he answers 

 V that " on the dorsum of two cells of Menipea clausa are organs I take to be vibracula." 



HaUtat.—^t&tion 70, 1675 fathoms. North-west of Spain, 2018 fathoms. Xv\\\^ ^^1^ ^^ ^' 



Urceolipora nana, MacGillivray. 



Urceolipora nana, MacGillivray, Trans. Eoy. Soc. Vict., p. 2 (sep.), 1880; Zool. of Vict., dec. xi. 



p. 19, pi. cv. figs. 5, 7. 

 Calymmophora lucida. Busk, ZooL Chall. Exp., part xxx. p. 83, pi. xxxii. fig. 3. 



Specimens in my possession leave no doubt as to the identity of MacGillivray's and 

 Busk's species. Calcining shows that the wall of the ovicell is much more solid than 

 (zool. chall. EXP. — PART Lxxix. — 1888.) Kkkk 2 



