Simpson — .1 Itcuiaion of the tldrjunclUdae. 307 



LocaliUj. — Hong-Kong, China. 



Gray (xii., p. 29), not having seen the specimen, simply recapitulates the 

 above description. 



Juncella extans. 



Jiincella extaiis, Verrill, xlvii., p. 37. 



" Tall and simple, with the very prominent verrucae curved inwards, and 

 arranged crowdedly in a band on each side of the axis, leaving a wide, naked 

 space on each side. Colour white. Axis greyish-white, stony, and rigid." 



Locality. — Fayal, Azores. 



XIV. — Scirpearia emend. 



(«•) Discussion of the Genus. 



1830 Scirpearia, Cuvier, i, p. 319. 



1878 Scirpearia, Studer, xxxiv., p. 660. 



1887 Scirpearia, Studer, xxxv., p. 67. 



1901 Scirpearia, Studer, xxxvii., p. 52. 



1889 Scirpearia, Wright and Stnder, 1., p. Ixv. 



1889 Scirpearella, Wright and Studer, 1., pp. Ixv and lo4. 



1855 Ctenocella, Valenciennes, xlvi., p. 14. 



1857 EUisella, Gray, x., p. 287. 



This genus was established by Cuvier in 1830 to include Pennatula 

 mirahilis, but the following note may be interesting : — Milne-Edwards and 

 Haime (Hist. Nat. Corall., 1. 0. 214) say: "The Alcyonarian described and 

 figured by Cuvier under the name Pennatula mirahilis seems to be very little 

 connected with Virgularia mirabilis, as some have suggested. It has a 

 slender stem attenuated at the two extremities, and bearing at each side a 

 simple series of widely separated polyps. Cuvier formed of it the genus 

 Scirpearia, which has been adopted by Ehrenberg. Lamarck placed it in his 

 genus Funiculina, near Pavonaria, under the name of FunicuUiui cylindrica. 

 Fleming thought that the species was not distinct from Vii-gularia ; and 

 Blainville affirmed that it was nothing but a Gorgonia. None of these 

 opinions seem to me admissible. It is too imperfectly known to have a 

 place assigned to it in a scientific classification of corals." 



In 1878 Studer resuscitated the genus, and gave the following diagnosis : — 

 " Colony simple or branched ; axis cylindrical, horny, and calcareous ; 

 coenenchyma thin; calyces projecting; in two longitudinal rows on the sides 

 of the stem and branches ; spicules double-clubs and spindles." 



This, then, must be our startiug-poiut in generic determination. 



