MICllOPORELLA MALUSII. 211 



MicROPORELLA Malusii^ Audouiii. 



Plate XXVIII. figs. 9-11 ; aud Plate XXIX. fig. 12. 



Cellepora Malusii, And. Expl. i. 239 : Savigny, Egj'pte, pi. viii. fig. 8. 



Cellepora Macry, W. Thompson, Ann. N. H. x. 20. 



Lepralia biforis, Johnst. B. Z. ed. 2, 314, pi. Iri. fig. 2. 



Herentia biforis, Gray, P.M. Rad. 123. 



Eschaeina cornuta, B'Orb. Voyage dans I'Amer. merid. (1839), 13, pi. v. 



figs. 13-16 : id. {Eeptoporina), Pal. Fran9. T. C. v. 443. 

 Reptoporina Malusii, id. Pal. Fran9. Terr. Cret. v. 443. 

 Eeptoporina hexagona, id. ibid. 4r44 {fide Fischer). 

 Lepralia Malusii, Busk, P.M. Cat. ii. 83, pi. ciii. figs. 1-^ ; Quart. Journ. 



Micr. Sc. viii. 125, pi. xxiv. fig. 1 ; Crag Pol. 53, pi. viii. 



fig. 3 : HeUer, Bryoz. Adriat. Meer. 34 {not pi. ii. fig. 3) : 



Mamoni, Suppl. Bryoz. Medit. 5, pi. ii. fig. 2 (Sitzb. k. 



Akad. d. Wisseusch. Bd. Ixiii. Iste Abth. Februar-Heft, 



1871) (the stellate pores absent). 

 Lepralia thyreopiiora, BusJc, Quart. Journ. Micr. Sc. v. 172, pi. xv. figs. 4, 5. 

 PoEiNA Malusii, Smitf, I.e. 5 & 56, pi. xxiv. figs. 11, 12. 



Zooscia ovate or rliombic, often truncate at each extremity, 

 convex, well-defined, disposed in radiating lines ; sur- 

 face smooth and silvery, more or less thickly covered 

 with stellate pores, especially round the sides and im- 

 mediately below the orifice, the central space usually 

 entire : orifice arched above, straight below, with three 

 or four spines on the upper margin, the lowest of which 

 on each side is occasionally forked : median pore lunate, 

 toothed, placed about halfway down the cell, often sur- 

 rounded in great part by a raised border. Ooecia glo- 

 bular, smooth, or with indistinct radiating lines, some- 

 times porcellaneous, areolated round the base. 



Primary cell "^ oval, the aperture occupying a large propor- 

 tion of the front, with membranous covering and about 

 ten short spines round the margin (woodcut, fig. 10) ; 

 from this the normal zooecia radiate in all directions, 

 spreading in somewhat circular patches (woodcut, fig. 11). 



* Round the lower part of the cell there are four elongate-oval foramina, 

 of which two are placed at the extremities and one on each side, a little below 

 the top: they correspond with the gemmae to which the zooecium gives 

 origin. 



p2 



