NORTH AMERICAN EARLY TERTIARY BRYOZOA. 691 



1908. Filisparsa varians BEUTLER. Beitrag zur kenntnis des Bryozoenfauna der alterer 



TertUirschicliten des sudlicheu Biiyeru, II, Palentographica, vol. 54, p. 233. pi. 24, 

 figs. 14-16. 



1909. Filisparsa varians CANU, Les bryozoaires tertiares des environs de Paris, Annales 



de Paleontologie, vol. 4, p. 115, pi. 14, figs. 6, 7, 8. 



1913. Filisparsa rations CANU, Contributions a 1'etude des Bryozoaires fossiles, pt. 5, Bulle- 

 tin de la Societe gologique de France, ser. 4, vol. 13, p. 125. 



1914 Filisparsa i-arians CANU, Les bryozoaires fossiles des Terrains du Sud-Ouest de 

 la France, Bulletin de la Societe geologique de France, ser. 4, vol. 14, p. 473. 



Diameter of the peristome 0.240.28 mm. 



Zooecial width- . _ 0.30 mm. 



Measurements. 



Distance between the peristomes 1.00 mm. 



Width of the branches 1.25 mm. 



Separation of the peristomes 1.00 mm. 



Length of the peristomie 0.30 mm. 



Variations. The ovicell of this species was long ago discovered by Canu in 

 a specimen from the Priabonian strata of the Vicentin, but a figure of it was not 

 published until 1916. It is pyriform. the point below ; the oeciostome is transverse 

 and of the same diameter as that of an ordinary tube. This ovicell moist be 

 extremely rare, as we have not observed it on our large number of American 

 Vicksburgian specimens. 



The tubes are porous ; the length of the peristomie very inconstant. In longi- 

 tudinal or transversal section, the thickness of the exterior wall is very great. 



Affinities. The micrometric measurements are rather close to Filisparsa 

 ingens, but the present species differs from it in a greater zooecial length and espe- 

 cially in its bra/nches, which are only half as large. 



Occurrence. Vicksburgian (Marianna limestone) : West bank Conecuh Eiver, 

 Escambia County, Alabama (very common) ; Salt mountain, 5 miles south of 

 Jackson, Alabama (common) ; near Claiborne, Monroe County, Alabama 

 (common) ; Murder Creek, east of Castlebury, Conecuh County, Alabama (very 

 common ) . 



Geological distribution. Lutetian of Paris, the Pyrenees, Bavaria (Canu) ; 

 Priabonian of the Vicentin (Reuss, Waters), of Transylvania (Pergens) ; Latdor- 

 fian of Germany (Stoliczka) ; Eupelian (=Stampian) of the southwest of France; 

 Burdigalian of Gard (Collection of Canu) ; Helvetian of Gard (Collection of Canu) 

 and of Italy (Seguenza) ; Tortonian of Italy (Seguenza), of Austria-Hungary 

 (Reuss), of Russia (Pergens); Zanclean of Italy (Seguenza); Plaisancian of 

 Italy (Seguenza) ; Astian of Italy (Seguenza), of southern France (Canu) ; Sicilian 

 of Italy (Xeviani) ; Quaternary of Italy (Neviani). 



Habitat. Mediterranean (Waters) . 



Plesiotypcs.C-it. No. 65402. U.S.N.M. 



