186 CRIBRILINID^. 



Lepralia raricostata, Beuss, Foss. Bryoz. osterreich-ungarisch. Miocans, 



26, pi. i. fig. 8. 

 ? Lepralia Endlicheri, Beuss, I.e. 31, pi. i. fig. 9. 

 Eeptescharella PYGM.EA, D' Orb. Pal. Fi-an^. Terr. Cret. t. 468, pi. 716. 



figs. 7, 8. 

 ? Eeptescharella radiata, If Orb. op. cit. v. 468, pi. 716. figs. 4-6. 

 CuiBRiLiNA RADL4.TA, Smltt, Floridan Bryoz. pt. ii. 22, pi. v. figs. 107, 108. 

 Cribrilina innominata, Smitt, I. c. 22, pi. v. figs. 109, 110. 

 Lepralia annulata, Hdler, Bryoz. Adriat. M. 33 : Manzoni, Suppl. Faun. 



Bryoz. Medit. prima Contv. 4, pi. i. fig. 4. 

 ? Lepralia cribrillina, Manz. Brioz. di Castrocaro, 27, pi. iii. fig. 40. 



Zocecia oval, sometimes subglobose, distinct;, quincuucially 

 arranged, with six to nine ridges on each side, radiating 

 from a central line, the furrows between them occupied 

 by a row of minute punctures, often a more or less pro- 

 minent keel doAvn the centre, terminating in an umbo 

 above; orifice semicircular, the lower margin straight, on 

 each side of it a very delicate setiform appendage, often 

 Avanting; immediately below it a projecting triangular 

 area, bounded by raised walls and inclosing a subtri- 

 angular pore (form i.), or an umbo and a few large punc- 

 tures only (form ii.) ; marginal spines 5-6. Avicularia 

 elongate, with pointed mandible, scattered amongst the 

 zocBcia. OoBcia globose, with a keel down the front. 



Colonies forming large irregular crusts, sometimes white 

 or silvery. 



Var. a. Cells very small, radiating ridges five, two on each 

 side and one at the bottom, very prominent, the two 

 uppermost forming a wall across the face of the cell ; 

 median pore present ; two slender vibraculoid seta. 

 Ooeciuni with many nodulous projections on the front. 



Var. /3. Cells very minute, distinct, oval, with deep 

 sutures between them, of a delicate pearly whiteness ; 

 the front flattish, traversed by ten radiating ridges, 

 which are surrounded by a narrow border of smooth 

 cell-wall ; ridges not prominent, interstitial punctures 

 distinct ; no central pore or umbo ; immediately below 

 the mouth a number of punctures of various shapes and 

 sizes. (Plate XXV. fig. 4.) 



