BRITISH PAL^OGENE BETOZOA. 247 



Species 2. Adeonellopsis incisa, u. sp. 



Syn. Microporella violacea, var. fissa, var. a, Viue, 1889, Proc. Yorks. Geol. & Polyt. Soc. xi. 

 p. 162, pi. V. figs. 7, 7 a. 



Diagnosis. Zoarium erect, bilaminar, and forming thick, short, subcylindrical shoots. 



Zocecia elongate, lanceolate, quincuncially arranged. The orifice is oval or suborbi- 

 cular ; it opens on the sloping upper surface of the high tumid head, which also bears 

 a large peristomial pore. A pair of large avicularia occur immediately below the 

 orifice. The zocecia are sharply defined by lines of depression marked by rows of 

 areolae. The trypa is a median narrow slit. 



Gonoecia . 



Distribution. London Clay : Haverstock Hill (}. Bracklesham Beds, fide Vine). 



Type. Brit. Mus. No. 49661. 



Figure. PI. XXX. fig. 11. Part of Mr. Vine's type. 



Affinities. This species in its slit-like trypa closely resembles Adeonellopsis perforata 

 (Eeuss) [Eschara perforata, Reuss, No. 1 1, p. 231, pi. xxxiii. fig. 5], but the latter 

 has no peristomial pore. It diifers from A. wetherelli, Greg., by the pair of avicularia 

 forming a peristomial pore, instead of having one median avicularium ; the trypa is 

 also different. The specimen figured by Reuss [No. 7, pi. xi. fig. 6j as Eschara diplo 

 stoma, Phil., also belongs to this genus, but differs in the form of the trypa and of the 

 orifice. The two other forms (figs. 5 and 7) associated with it by Reuss seem different, 

 and that represented in fig. 7 is probably a second species of Schismoporella. 



Suborder HOLOTHYRIATA. 



Family LEPRALIID^. 



Subfamily LepealiiNjE. 

 Genus Lepkalia, Hincks, 1880 (non Johnst. &c.). 

 Diagnosis. Hincks, No. 2, p. 297. 



Species 1. Lepealia lonsdalei. 

 Syn. Eschara bronyniarti, pars, Lonsdale (non M.-Edw.), 1850, Dixon, Geol. Suss. pp. 161, 162, 

 pi. i. fig, 9*. 



Diagnosis. Zoarium thick, encrusting. 



Zocecia small, ovate; very irregularly distributed. Form irregular, varying from 

 somewhat elongate to short and round. Aperture lepralian, very large : lower margin 

 straight or curved outwards ; the lateral constriction is, however, very slight. Surface 



