112 PEOCEEDINGS OF THE NATIONAL MUSEUM vol. 72 



MICROPORELLA NORMANI, new name. 



Plate 34, Figure 5 



1909. Microporella coronata Norman, The Polyzoa of Madeira, Journal 

 Linnean Society Zoology, vol. 30, p. 297, pi. 39, fig. 4. 



,, ... f^a = 0.08 mm. 



Measurements. — Aperturei, ^ ^ _ 



^ Ua = 0.15 mm. 



. [Z2 = 0.65-0.75 mm. 



Affinities, — According to Waters, 1908, Microporella coronata 

 Audouin, 1826, is a smaller species in which the dimensions are, 

 aperture = 0.08 by 0.12 mm. and zooecia==0.56 by 0.36 mm. 

 Norman's figure indicates only the broad cells; our specimens contain 

 a mixture of broad and long cells, but we have not seen other 

 differences. 



This species is well characterized by its large avicularia almost 

 adjacent to the aperture. It is very close to Microporella californica 

 Busk, 1856, in the ensemble of its measurements and in its general 

 characters. It differs from it only in the absence of a frontal 

 gibbosity, in its somewhat shorter zooecia, in slightly broader 

 aperture, and in its smaller avicularia. 



Waters identified these three species with that of Audouin, 1826. 

 This is possible, for they have very much the same exterior aspect, 

 but we prefer, however, to separate them as the materials for com- 

 parison in our possession are not sufficient. 



Occurrence. — Recent: Madeira. Pliocene: Minnitimmi Creek, 

 Bocas Island, Almirante Bay, northwest Panama. 



Cotypes.~Cat. No. 70849, U.S.N.M. 



Genus FENESTRULINA Jullien, 1888 



FENESTRULINA MALUSI Savigny-Audouin, 1826 



1923. Fenestrulina malusi Canu and Bassler, North American Later 

 Tertiary and Quaternary Bryozoa. Bull. 125, U. S. National 

 Museum, p. 118, pi. 36, figs. 2, 3. (Bibliography, geologic, and 

 geographic distribution.) 



In our work of 1923 we wrote: "It is remarkable that this very 

 cosmopolitan species has never been observed in the western Atlantic 

 as fossil as well as recent." Since then we have been fortunate 

 enough to discover two ovicelled specimens living on Stylopoma 

 spongites in the waters of Florida. 



Occurrence. — Albatross Station D. 2405, Gulf of Mexico; 28° 45' 

 00" N.; 85° 02' 00" W.; 30 fms.; gray sand, broken coral. 



