MEMBRANIPORID^E. 45 



10. L. TJNICORNIS, Johnst. PI. V, fig. 4. 



Cellulis late ovatis, superficie puncturata umbone central! munitis. Orificio orbicular! 

 infra medio inciso. Aviculario sessili, mandibulo acuto sursuui et ad latus externuiu 

 oblique spectante, in partem superiorem cellulae utrinque posito. Ovicellula sulcis radianti- 

 bus signata. 



Cells broad-ovate ; surface punctured; a central umbo ; orifice orbicular with a sinus 

 below ; a sessile avicularium on one or both sides at the upper part of the cell, the man- 

 dible pointing upwards and outwards. Ovicells with radiating grooves. 



BEEENICEA COCCINEA, Johnston, in Transact. Newc. Soc., ii, p. 267, pi. xii, fig;. 5. 

 LEPRALIA COCCINEA, Johnst., B. Zooph., 1st ed., p. 278, pi. xxxiv, figs. 1-3. 



UNICORNIS, Johnston, Brit. Zooph., 2d ed., p. 321, pi. Ivii, fig. 1. 

 SPINIFERA (var.), Busk, B. M. Cat., part ii, p. 69, pi. Ixxx, figs. 5, 6, 7, and pi. 



xci, figs. 1, 2. 

 CELLEPORA TETRAGON A, Reuss, Fossil Polyp, d., W., T. B., p. 78, pi. ix, fig. 19. 



Habitat. C. Crag, S. Wood, on shell. (Recent) Britain, Gibraltar Bay, Landsb. 

 Tertiary, Vienna Basin, Reuss. 



ILL. ANSA.TA, Johnston. Plate VII, fig. 2. 



Cellulis ovatis sen oblongis, antice ventricosis, superficie foveolata, umbonatis. 

 Orificio semicircular!, labio inferiori recto, medio inciso ; aviculario elevato in partem 

 superiorem cellulae utrinque posito. 



Cells oval or oblong, ventricose in front, surface pitted ; orifice semicircular above, 

 lower margin straight, with a central notch ; an umbo close below the orifice ; and on each 

 side above a raised avicularium. 



L. ANSATA, Johnst., Brit. Zooph., 2d ed., p. 307, pi. liv, fig. 12. 



L. SPINIFERA (var.), Busk, B. M. Cat., part ii, p. 69, pi. Ixxxi, figs. 6, 7. 



CELLEPORA DUNKERI, Reuss, op. cit., p. 90, pi. x, fig. 27- 



C. PROTUBERANS (?), Id. ib., p. 89, fig. 26. 



Habitat. C. Crag, S. W. Vienna Basin, Reuss. (Recent) Britain. 



