212 A Catalogue of the 



Lepralia, Johnston. 



Zoarium encrusting or erect, and uni-or bilaminate. Zoogcia 

 cloFely adherent to each other; mouth horse-shoe shaped, usually 

 slightly contracted at the sides; lower lip straight or \slightly hol- 

 lowed. 

 L. Pallasiana, Moll B.M.C., Part II., p. 81 ; B.M.P., p. 297. 



( == pertusa, P.Z.V., 36.) 

 L. pertusa, Espar sp. B.M.C., Part II., p. 80 ; B.M.P., p. 305. 



L. elegans, M^G. P.Z.V., 36. 



L. subimmersa, M'G. P.Z.V., 35. 



L. quadrata, M^G. sp, P.Z.V., 48. 



L. bifrons, HincJcs. A.M.N.H., Oct., 1884. J.B.W. 



Not seen by me. 

 L. setigera, Smitt sp. T.R.S.Y., July, 1882. 



Chorizopora, Hinchs. 



Zoarium encrusting. Zooecia elongated, more or less distant, and 

 connected by a tubular network ; mouth arched above, straight or 

 hollowed below ; each zooecium surmounted by an avicularium with 

 the mandible directed upwards. Ooecia pyriform, with a small 

 avicularium on the summit. 



C. Brogniartii, Audouin sp. B.M.-C, Part II., p. 65 ; B.M.P., 

 p. 224; P.Z.V., 36; C.P., p. 148. 



C. vittata, M^G. P.Z.V., 37. 



Petralia, M'G. 



Zoarium erect, foliaceous, stony, unilaminar, fenestrate. Zooecia 

 horizontal, distinct throughout the entire thickness of the zoarium, 

 and sharply defined behind ; mouth nearly circular, with a sharp 

 denticle on each side below. 



P. undata, M^G. P.Z.Y., 63. 



Cyclicopora, Hincks. 



Zoarium encrusting or loosely adnate. Zooecia elongated ; 

 mouth subcircular, turned forwards, with slightly thickened margin. 

 Ooecia prominent. 



C. longipora, M^G. sp. P.Z.V., 116. 



Sub-family. Mucronellin^. 



Zooecia with the primary mouth entire or (Rhynchopora), with a 

 sinus below ; secondary mouth differing from the primary by the 

 special development of the peristome. 



Porella, Gray. 



Primary mouth semi-circular ; secondary mouth with a projec- 

 tion of the peristome below, within or on the edge of which is a 

 small avicularium with a rounded mandible. 



