496 



BULLETIN 106, UNITED STATES NATIONAL MUSEUM. 



PHOCEANA (?) SIMULATOR, new species. 



Plate 65. figs. J-S. 



Description. The zoarium is free, cylindrical, never branched, and formed of 

 four to five longitudinal rows of zooecia. The zooecia are indistinct; the frontal is 

 little convex and smooth. The peristome is salient, entire or irregularly perforated ; 

 the peristomice is irregulai-, orbicular or elliptical, and transverse; the peristomie 

 is deep, and the apertura is invisible. 



*. Peristomice 



(^6=0.06-0.15 mm. 



Zooecia 



f 7,3= 0.65-0.70 mm. 



1 1 r, 1 n t/<J'jr^i<l i ? n t- 



Upc=0.lS mm. \ls=0:2o mm. 



Aflin!t!i'x. The pseudolyrula is visible only on the specimens with feeble peri- 

 stomie (fig. r>). The longitudinal section of a zooecium (fig. 8) shows that the 

 peristome often bears a small avicularium. 



FIG. 138. Genus Bryocryptellrt Cossmaii, ]006. 



A-E. Bri/ocriiirtclla < Cruiitclla) torquata Jullien, 1903. A. Zoarium natural size. B, C. Zoa- 

 rium enlarged and two zooecia of same. D. Dorsal face of a zoarium. (A-D after Norman. 

 1909.) E. Zooecial orifice, X 30. (After Jullien, 1903.) F. G. liritocriipteUa koehleri Calvet, 

 1S96. Operculum, X 90, and avicularian mandible, X 2GO. (After Calvet. 1903.) 



This species much resembles Acropora as/>< n//ti. whose exterior aspect it simu- 

 lates absolutely. It differs from it, however, in its smaller micrometric dimensions, 

 in the absence of an ascopore, and in the presence of the peristomial psendolyrula. 



Occurrence. Middle Jacksonian (Castle Hayne limestone) : Wilmington. North 

 Carolina (common). 



Cotypcs.Cat. No. (U156, U.S.N.M. 



Genus BRYOCRYPTELLA Cossman, 1906. 



1903. Cnjiiti'Un .IVLLIICN. Brvozoaires proveuant des Campagnes de J'lFirondclle, p. 76. (Pre- 

 occu|iicil. i 



V.Miii. liriim-riiiili'llii COSSMAN, Revue critique paloo/oolojjie, vol. 10, p. 196. 



The ovicell is not dosed by the operculum; it opens into the peristomie. The 

 apertura is subquadrilateral, deprived of lyrula and cardelles. The frontal is a 

 l>leiinicyst surrounded by a border of areolae, which often form a collar around 



