2' THE VOYAGE OF H.M.S. CHALLENGER. ."'^' 



The Family here contains : — j 



1. Crisia. 



(1) Crisia biciliata, Macgilliv. (PI. I. figs. 1,2)., 



(2) Crisia ehurnea, var. laxa (PI. II. fig. 1). 



(3) Crisia denticulata, Lamk. (PL II. fig. 3). ^ 

 Crisia denticulata, var. a, gracilis (PI. I. fig. 4). 



Crisia denticulata, var. )8, patagonica. 



(4) Crisia elongata, M.-Edw. (PI. I. fig. 3). 



(5) Crisia acuminata, n. sp. (PI. III. fig. 1). 



(6) Crisia acropora, Bk. 



(7) Crisia holdsworthii, Bk. (PI. III. -fig. 2). 



(8) Crisia conferta, Bk. (PI. II. fig. 5). 



(9) Crisia cyliiidrica, n. sp. (PI. II. figs. 2, 4). 



1. Crisia. 



Sertularia (pars), Liiin4 



Cellularia (pars), Pallas. 



Cellaria (pais), Solander, Lamk. 



Tibiana (pars), Lamk., Schweigger, Blainville, Lister. 



Falcaria (pars), Oken, Gray. 



Eucratea (pars), Esper, Lamx., Fleming, <fec. 



Crisia (pars), Lamx., Johnst., Gray, Auctt. 



Crisidia (pars), M.-Ed wards, Busk, d'Orbigny (1852). 



Filicrisia, d'Orbigny (1851). 



Character. — Zocecia disposed in a single or double longitudinal series. Ocecia 

 modified zocecia, with a tubular aperture^ walls punctate. 



§ a. Uniserial. 



Crisidia, M. -Edwards, Busk, Auctt. 

 Unicellaria (pars), Blainville. 

 Falcaria, Oken, Gray. 

 Tibiana, Lister (nee Blainville, Lamx.). 

 Vnicrisia, d'Orb., Vine. 



No species belonging to this section occurs in the Challenger collection. 



§ /8. Zocecia disposed in a double series, opposite or alternate. 



§§ a. Zocecia opposite in pairs, from two to four (rarely six) in an internode. 



Bicrisia, d'Orbigny. 

 Crisia (pars), Auctt. 



