ESCHARIDiE. 67 



recent E. cervicornis. Attention to the circular sinuated orifice which will be seen at the 

 bottom of a funnel-shaped pit encircled by a row of puncta, will, however, in most cases 

 bo sufficient for its distinction. 



5. E. coRNUTA, {n. sp.) PI. IV, fig. 7, and PI. X. fig. 5. 



' Polyzoario explanato irregulari ; cellulis ovalibus seu rhomboidalibus, superficie 

 granulosa, ad marginem seriatim punctatis, rostro magno avicularium gerente munitis. 

 Ostio magno, rotundato, supra paulatim constricto, labio inferiori subrecto, peristomate 

 supra spina unica vel duplici et infra utrinque spina marginali forti conica armato. 



Polyzoarium expanded irregular ; cells oval or rhomboidal ; surface granular ; a single 

 row of large channelled pores round the border ; orifice large, round, and contracted 

 above ; lower border straight, or slightly hollowed ; a large conical spine on each side of 

 the orifice below, and one or two spines of less size above ; a prominent rostrate avi- 

 cularium on the front of the cell. 



Halitat.—C. Crag, 8. W., J. S. B. 



{()) Lobate or ramose. 

 G. E. Sedgwickii, M. Edw. PI. X, fig. 1. 



Polyzoario e lobis latioribus composite ; cellulis oblongis, supra latioribus, superficie 

 porosa, ad marginem seriatim punctatis ; aviculario immerso centrali, vel hand raro iaterali 

 et ostium juxta munitis. Ostio permagno, suborbiculari, infra subinde constricto, labio 

 inferiori submucronato. Ovicellula magna, alta, subglobosa. 



Polyzoarium broadly lobate ; cells oblong, expanded above, surface punctured with a 

 distinct row of pores around the border and orifice. Orifice very large, suborbicular, 

 sometimes contracted and submucronate below ; an immersed avicularium usually in the 

 centre of the cell in front, but sometimes placed on one or both sides near the orifice ; 

 oviccll large, lofty, subglobose. 



EscH. Sedgwickii, M. Edw., 1. c, p, 10, pi. x, fig. 8 ; S. Wood; Michelin (?), Icon. 

 Zooph., p. 328, pi. Ixxviii, fig. G. 



Habitat. — Cor. Crag, Sudbourne, S. W., M. Edwards ; Doue, Michelin. 

 The incipient " capsules gemmiferes '' of M. M. Edwards, are the central avicularia, 

 which may be regarded as the most distinctive character of this species. In the majority 



