276 MYRIOZOID^. 



d. Avicularia on a distinct area above the cell. 



ScHizopoRELLA VENUSTA^ Norman. 



Plate XXX. figs. 0, 7. 



Lepralia venusta, Norma7i, Ann. N. H. January 1864, 84, pi. x. figs. 2, 3. 

 Gejiellipora glabra, forma striatula, Smitt, Flor. Bryoz. pt. ii. 37, pi. xi. 

 fig. 207. 



Zooecia lozenge-shaped, occasionally ovate, moderately 

 convex, irregularly disposed, with a prominent umbo 

 below the mouth ; surface smooth and hyaline, punc- 

 tured; orifice orbicular above, produced below into a 

 Avide, shallow sinus, immediately above which are two 

 small lateral sinuses, placed one on each side; above 

 each cell a small rectangular area, with a minute 

 avicularium near the top of it, mandible rounded. 

 Ooecia rounded, somewhat depressed, punctured, sur- 

 mounted by a very small avicularium. 



Habitat. On shells, in shallow water ; on Nullipore, 

 from a greater depth. 



LocALiTy. Off Guernsey, in about 10 fathoms (A. M. 

 N.). 



Geographical Distribution. Florida, 68 fathoms 

 (Pourtales) . 



This is a very elegant species. The cells in their young 

 and fresh condition are smooth, hyaline, and glittering, 

 prettily speckled with a multitude of minute puncta. In 

 some cases, however, they soon lose this beauty, and are 

 covered by a dull whitish crust, which partially conceals 

 the perforations, and gives the zoarium a coarse appearance. 

 I have seen the whole of the central portion of a colony 

 in this condition, but surrounded by a bright zone of semi- 

 transparent cells. 



