jyatiircd Ilistonj of East FinviarJc. 583 



1848. Flustrina carhasea, J. van Beneden, Bull, Acad. Roy. Belg. 



vol. XV. p. 6ol. 

 1851. SemiJlvMra carhasea, d'Orbigny, Palseont. Fran?., Ten\ Cret. 



vol. V. p. 326. 

 1867. Flusira papyrea, Smitt, " Krit. Forteck., &c." pp. 359 & 380, 



pi. XX. figs. 9-1 i (uec Eschara papyrea, PaUas). 



This species, which is also Flustra papyrea of Busk (B. M. 

 Cat.) and Flustra carhasea of Hincks (Hist. Brit. Polyz.), is 

 distinguished from C. papyrea by its loop-shaped or liugiii- 

 form zocecia, Avhich are proportionately wider in front and 

 narrower in the middle than in that species ; and are entirely 

 devoid of the angular projections in the middle of the lateral 

 margins. Ooecia are not known to occur. Its distribution 

 is boreal and arctic, from Britain to Spitsbergen and Green- 

 land, In this species Waters describes n^^merous distal and 

 six lateral rosette-plates — the former with a single pore, the 

 latter with several pores. 



Nordgaard records this species from Svcerholtklubben. 



29. Carhasea memhranaceo-trimcata (Smitt). 



1867. Flustra memhranaceo-truncata, Smitt, " Kritisk Fiirteck., &c." 



p. 358, pi. XX. figs. l-o. 

 1884. Flnstra membranaceo-truncata, Vigelius, Die Biyozoen 'Willem 



Barents,' p. 10, pis. i.-vi. 



According to Waters this species has three distal and six 

 lateral rosette-plates, all with only one pore, Vigelius 

 (/. c.) has published a most elaborate memoir on this 

 species. The margins of the zooecia are typically quite 

 unarmed, but in a specimen from 150 fathoms in the Varan- 

 ger Fiord I find a spine on each side at the front corner of 

 the lateral margins. In an example from Greenland similar 

 spines occur, while they are wholly absent from other Green- 

 landic specimens, from those in my collection from the 

 St. Lawrence, and from others kindly given me by the 

 describer, Herr Smitt, from Finmark and Spitsbergen. Off 

 Vardo, in 118 fathoms, * Voringeu ' Expedition. 



Genus Flustra, Linne. 



30. Flustra ahyssicola, ]\[. Sars. 



1872. Flustra abyssicola, G. O. Sars, 'Some remarkable Forms of 

 Animal Life,' Cliristiania, p. 19, pi. ii. figs. 25-30. 



Dredged by the ' Yoringen ' in 148 fathoms off Vadso. 



