MEMBRANIPORIDtE. 53 



Cells ovato-elongate or pyriform, separated by distinct septa ; surface smooth, with 

 a single row of minute punctures round the border ; orifice arched above, contracted, with 

 a straight border below ; a wide, rounded denticle within the lower lip. 



Habitat. — C. Crag, S. W., on shells. 



25. L. Malusii, Audouin. PI. VIII, fig. 3. 



Cellulis ovatis seu hexagonis ; poris numerosis, stelliformibus, irregulariter sparsis 

 ornatis, poroque central! lunato signatis. Orificio supra arcuato, labio inferiori recto 

 perist ornate simplici. Ovicellula elevata, antice glabra, basim circa canal iculata seu 

 perforata. 



Cells ovate or hexagonal ; surface perforated with numerous stellate pores ; a central 

 lunate pore. Orifice rounded above, straight below ; peristome not thickened ; ovicell 

 prominent in front, smooth, grooved or perforated round the base. 



EscHARA Malusii, Audouin, Expl. i, p. 239 ; Savign., Egypt, pi. viii, fig. 8. 

 Lepralia Malusii, Busk, Brit. Mus. Cat., p. 8.3, pi. ciii, figs. 1 — A. 

 Lepralia biforis, Johnston, Brit. Zooph., 2d ed., p. 314, pi. Iv, fig. 4. 

 Herentia biforis, Gray. 

 Cellepora Macry, W. Thompson (not Bella Chiajel — nor M. Edwards). 



Habitat. — C. Crag, on Terebrat. grandis, J. S. B. {Recent) Britain, common ; South 

 Patagonia (48 fms.) ; Falkland Islands, Darwin ; New Zealand, Dr. Li/ all ; on shells, 

 stone and fuci. 



The peculiar stelliform appearance of the pores in the recent L. Malusii is perhaps 

 necessarily wanting in the fossil, in which the appearance of puncta is altogether very 

 indistinct. But the general aspect of the cells, the form of the mouth, and the existence 

 of the central lunate pore, as well as the very peculiar perforations round the attached base 

 of the ovicell, which are very apparent in the fossil, though accidentally not shown in 

 the figure, appear to be amply sufficient to prove its identity with the recent, cosmopolitan 

 species. 



36. L. REUssiANA {n. sp.) PI. VIII, fig. 2. 



Cellulis ovatis, supra contractis, superficie glabra; raarginem circa serie punctorum 

 minimorum unica ornatis. Orificio subquadrangulari seu oblongo, transverso ; peristomate 

 producto, integro, incrassato, denticulum latum internum infra ostendente. 



