378 ESCHARID^. 



Genus PALMICELLARIA, Alder. 



Der. 'Frova palma, the palm of the hand, and cella, a cell. 



Palmicellauia, Alder, Quart. Journ. Micr. Sc. 1864. 

 Cellepora (part.), Flem. : Johnston : &e. 

 EscHAEA (part.), Busk : Sars : &c. 

 DiscopoRA (part.), Smitt. 



Generic Character. — Zooecia with the primary orifice 

 orbicular, or ranging from semicircular to semiellijitical ; 

 the peristome elevated around it, so as to form a secondary 

 orifice, and carried out in front into a projecting palmate 

 or mucronate process, with an avicularium on its itmer 

 aspect. Zoarium {i7i the British species) erect and ramose, 

 or (?) lamellate. 



Distinguished from the preceding genus by the secon- 

 dary orifice, with its mucronate and aviculiferous process 

 in front. 



Palmicellaria elegans. Alder. 

 Plate XXXI. figs. 7-9. 



Palmicellaria elegans. Alder, Quart. Journ. Micr. Soc. n. s. iv. (1864), 

 100, pi. iii. figs. 1-4 : Norman, Shetland Pol., Eep. B. A. 

 1868, 309. 



PusTULiPOKA PROBOsciDEA, Johust. B. Z. cd. 2, 278, pi. xlviii. figs. 4, 4 {fide 

 Norman *). 



Zoarium erect, very slender, of ivory whiteness, slightly 

 branched dichotomously, branches nearly in the same 

 plane, somewhat attenuated towards the top. Zooecia 

 disposed in four longitudinal rows, alternating with 

 each other, oblong- ovate, smooth, very slightly defined ; 



* Who has examined the specimens bearing tliis name in Dr. Johnston's 

 collection. 



