BRYOZOAN FAUNA OF VINCENTOWN LIMESAND 37 



Measurements. — 



„ . \Lz=0.9-l mm. . fAa=0.12-0.15 mm. 



Zooecia{ Zs=a25 _ 03 ^ AperturaJ^ lg _ 1? ^ 



Affinities. — In spite of the presence of an endozooecial ovicell and 

 of an apertural avicularium this species is not a Micropora; it dif- 

 fers in the absence of the opesiules and in the structure of the aper- 

 ture, where the proximal lip looks like a polypidian lamella. 



This peculiarity did not escape Pergens and Meunier in 1886, who 

 noted on the European specimens an aperture having the form of 

 that in Steganoporella. This structure is quite visible on certain 

 cells, but unfortunately it is not very constant. However, the prox- 

 imal lip is always independent and is never formed by a transverse 

 trabecula attached to the mural rim and placed at its level. It will 

 be necessary to find a similar structure in the genus Crateropora or 

 Ldbiopora. But these have ovicells of a very different nature and 

 are deprived of adventitious avicularia. It is then with just reason 

 that Voigt, 1930, made this species the type of a special group of 

 Micropora. He correctly places here Gellepora suhgranulata Hage- 

 now, 1851, from the Maastrichtian of Limbourg. Unfortunately he 

 gave no explanation, and his figures are very poor. This is certainly 

 a new genus peculiar to the Upper Cretaceous, but for the want of 

 material we are unable to fix all the characters from sections and 

 dissected specimens. 



The European specimens have been compared to Vhicularia sculpta 

 D'Orbigny, 1852, from the French Senonian. The latter with its six 

 opesiules probably belongs to the genus Puncturiella Levinsen, 1925. 



The bibliography given by Voigt, 1930, for the European speci- 

 mens is absolutely correct, but we think they belong to a different 

 species in which the cells are much smaller (0.6 mm and not 1 mm). 



Occurrence. — Vincentown limesand: Rare at Vincentown, X.J. 



Eolotype.— U.S.N.M. No. 52605. 



Family ASPIDOSTOMIDAE Jullien, 1888 

 Genus MOLLIA Lamouroux, 1821 



MOLLIA LACESSITOR. new species 



Plate 7, Figure 9 



Description. — The zoarium encrusts fragments of shells, Serpulae, 

 and other Bryozoa, often over large surfaces. The zooecia are dis- 

 tinct, separated by a deep furrow, little elongated, hexagonal; the 

 mural rim is thin, little salient ; the cryptocyst is large, shallow, some- 

 what convex at the base and slightly concave in front of the opesium. 

 The opesium is terminal, transverse, somewhat trifoliate, with an 



