360 ESCHAllID^. 



iii. IVith a nmcronate peristome. 

 Genus MUCRONELLA, Hincks. 



Dei". From mucro, a point. 



Bekenicea (part.), Fleming. 

 Lepk.vlia (part.), Johnston : Busk : &c. 

 EsciiARELLA, Gray. 

 DiscopORA (part.), Smitt. 



Generic Character. — Zocecia ivith a suborbicular or 

 semicircular orifice ; the peristome elevated in front into a 

 more or less prominent mucro. Zoarium (m the British 

 species) incrusting. 



This genus is equivalent in part to the Discopora of 

 Smitt_, but not of Flemings who originated the name for 

 a species belonging to a totally different section of the 

 Polyzoa (the Cy clostomat a) , with, which it is still connected 

 in the slightly modified form Discoporella. In the British 

 species the lower margin of the orifice is almost univer- 

 sally dentate. 



a. Without avicularia. 



Mucronella Peachii^ Johnston. 



Plate L. figs. 1-5, and Plate LI. figs. 1, 2. 



LioniAi.iA Peaciiii, Johnd. B. Z. ed. 2, 315, pi. Iv. figs. 5, 6 : Gray, Br. 

 Radiata, 118: Busk, B.M. Cat. ii. 77, pL Ixsxii. fig! 4, pi. 

 xci. figs. 5, 6, pi. xcvii. ; Crag Pol. 48, pi. v. figs. 6, 7, 8, 

 pi. vi. fig. 4; (var. labiosa) Quart. Journ. Micr. Sc. iv. 309, 

 pi. X. figs. 5, 6 : Heller, Bryoz. d. Adriat. Meer. 32. 



Lepkalia immersa, Johist. B. Z. ed. 2, 325, pi. Ivii. fig. 8. 



Berenicea immersa, Fle7n. Br. An. 533 : Couch, Corn. Faun. pt. iii. 118. 



Escharella immersa, Gray, Br. Ead. 125. 



Discopora coccinea, forma Peachii, Smitt, loc. cit. 26 & 170, pi. xxvii. figs. 

 164-166, & 167 (referred to L. ventricosa). 



? Discopora emixronata, id. Krit. Forteckn. ffifv. &c., 1871, 1129, pi. xxi. 

 figs. 27, 28. 



