88 Rev. T. Hincks's Contributions toioards a 



(pi. XXV. fig. 2) a subtriangulav space on the front of the 

 ocecium is inclosed by prominent raised lines, whilst in the 

 Madeiran specimen its place is occupied by a smooth, sub- 

 acuminate elevation which stretches upward from the oral 

 arch. Such differences in superficial detail have little syste- 

 matic significance. 



Ibid. (p. 6 Sep.). 



Microporella decorata, Reuss (sp.). 



Syn. Microporella diadema, MaoGillivray, Prodromus Zool. Victoria, 

 decade iv. p. 80, pi. xxxvii. tig. ; llincks, " Contributions " &c., 

 Ann. & Mag. Nat. Hist. ser. 5, vol. xv. p. 249, pi. viii. figs. 3. 



The ocecium is liable to considerable variation. Compare 

 the figure in Manzoni's ' Bryozoi fossil. Italiani,' pt. ii. pi. i. 

 fig. 6, with MacGillivray's. "The broad band of vertical 

 beaded lines," which is so marked a feature of the recent 

 form, is represented in the fossil by a line of small nodules 

 round the base of the ocecium, which is not even referred to 

 in the description. 



In the account of M. decorata I have referred to Micro- 

 porella violacea^ Johnston (sp.) ; but this species, we now 

 know, should probably be included in the genus Adeona *, 

 Lamouroux, the genus ReptadeoncUa of the ' Challenger ' 

 Report being quite untenable. 



Ibid. (p. 8 Sep.). 

 ScJiizoporella sanguinea^ Norman. 

 Additional Locality. South Africa {^Miss Jdhj). 



Ibid. (p. 9 Sep.). 

 Lej^ralia Kirchenpauerij Heller, var. teres. 



The Madeiran form, which I have regarded as a variety of 

 Heller's species, Mr. Waters would refer to L. Poissonii^ 

 Audouin. On further consideration I am not disposed to 

 adhere to my former opinion. The shape of the cell, which 

 is much more distinctly given in Manzoni's figure than in 

 Heller's, is very peculiar, and differs widely from that which 

 is shown in my figure (' Annals,' ser. 5, vol. vi. pi. ix. figs. 7). 

 A distinctive feature of Heller's species is the ribbed ocecium ; 

 but that of the Madeiran form is of small size and smooth 



• See " Critical Notes on the Polyzoa,'" Ann. k Mag. Nat. Hist. 

 ser. 5, vol. xix. p. 158. 



