42 



end. No lateral thickenings. In a large nnniber of the heterozooecia I have found 

 a calcareous mandible which is strongly arched not only from side to side, but 

 also proximally distally. 



Ooecia have not been found. 



Kenozooecia of the same form and size as the zooecia have been found spread 

 among the zooecia in very scarce numbers. 



A Closure effected by means of a concave lamina has been found in a few 

 zooecia. 



A Regeneration has not been seen. 



The Colonies are composite, and the only fragment examined is a hollow three- 

 layered expansion from le Mans (Cenomanian). 



Meliceritites micropora d'Orbigny. 



Meliceritites micropora d'Orbigny, Bryoz. Crét. p. 624, pi. 737, figs. 4 — 7. 



— — Pergens, Revision d. Bryoz. p. 397. 



Nodelea micropora Gregor}', Cret. Bryoz. p. 313. 



(PI. Ill, fig. 10.) 



The Zooecia (long 0,3 — 0,5) which are of very variable size are hexagonal-ovate, 

 about twice as long as broad, convex and divided by distinct furrows in the 

 bottom of which there may be found very narrow and indistinct marginal ridges. 

 The half-elliptical aperture, the length of which is often contained about three times 

 in the length of the zooecium, is not provided with a distinct peristomial thicke- 

 ning nor with a distinct oral ledge. The convex operculum shows a distinct fla- 

 belliform striation. 



Heterozooecia have not been found. 



The Ooecia. A single elongate ooecium has been found. 



The Kenozooecia. A few of these zooids have been found among the zooecia. 



A Closure of the primary zooecia has not been found. 



The Regeneration takes place in great measure, but never in such a manner that 

 the old aperture is filled by the new one. On the contrary the proximal half of 

 the former is taken up by a concave lamina, the suboral area of the new zooecium, 

 the distal half of which is strongly arched and provided with a small semicircular 

 aperture, and the latter is at last closed by a concave lamina. The continued de- 

 position of calcareous matter gradually effaces the limits between the old aperture 

 and the suboral area of the new zooecium, and at a certain point of time only the 

 rest of the small aperture and a more or less distinct depression proximally to the 

 latter indicate that a regeneration has taken place. 



The Colonies are incomposite, and the two fragments examined are cylindrical 

 with 20—25 zooecia in each of the irregular transverse series. 



Villedieu. 



