BEEEXICEA. 
71 
BERENICE A (Lamouroux), 1821. 
Srxoxms. 
Aulopora, pars, Goldfuss, 1829 ; Homer, 1839, etc. 
Stomatopora, pars, Bronn, 1848. 
Cellepora, pars, von Hagenow, 1839. 
Jjiastopora, pars, Milne Edwards, 1838, etc. 
Rosacilla, Eomer, 1840. 
Tubulipora, pars, von Eeuss, 1847, etc. 
Daa-yopora, Terquem, 1855. 
Diagnosis. 
Diastoporidte in. which the zoarium is a thin, unilaminar, 
encrusting sheet. The zooecia are tubular. The peristome 
is usually slightly raised ; but the aperture is often flush 
with the surface of the zoarium. 
The marsupial expansion is usually a gonocyst. 
Type Species. 
Berenicea proniinens, Lamx. Recent : Mediterranean. [The 
B. oihelia (Johnst.).] 
Cbetaceous Repeesentatives. 
Berenicea is a very common Cretaceous Rryozoan, and one of 
the most difficult genera to divide into satisfactory subdivisions. 
The variations are less numerous than among the Jurassic forms 
of the genus. Some of the Cretaceous species show a decided 
advance on their Jurassic predecessors ; the bottle-shaped zooecia 
of B. folium, Nov., are, for example, more specialized than those 
of any Jurassic Berenicea. The peristomes are often higher and 
more isolated than in the earlier members of the genus, and thus 
approximate to Phalangella, of which the most primitive form 
appears to be a Cretaceous species originally referred to Berenicea, 
viz., B. radians, Nov. 
The species of Berenicea have been referred to Aulopora, 
Cellepora, Tubulipora, and Stomatopora, from which all bryo- 
zoologists now agree in separating them. Rosacilla was proposed 
by Rdmer^ in 1840, and is inevitably a synonym of Berenicea, 
1 Eomer : Verst, nordd. Kreidegeb. pt. i. 1840, p. 19. 
