170 BULLETIN 125, UNITED STATES NATIONAL MUSEUM. 



Family TUBUCELLARIIDAE Busk, 1884. 



Genus TUBUCELLARIA D'Orbigny, 1852. 



(For deacription, see Bulletin lOli, U. S. National Museum, p. 542.) 



TUBUCELLARIA PUNCTULATA Gabb and Horn, 1862. 



Plate 40, figs. 1-4. 



1862. Enlalophora punr.tulala Gabb and Horm, Moaosraph Polyzoa Secondary and Tertiary forma- 

 tions of North America, Journal Academy Natural Sciences, Philadelphia, ser. 2, vol. 5, 

 p 171, pi. 21, fig. 61. 



,, , [Peristome, 0-30 mm. „ . [^2 = 1.20-1.30 mm. 



Measurements. — „ . , . nio norv Zooecia , ^ a^ r, rr, 



[Penstomice, 0.18-0.20 mm. [h =0.40-0.50 mm. 



Affinities. — Ttiis species is not entirely articulated; the segments are often 

 ramified. The peristome sometimes bears one or two small avicularia. The frontal 

 is a tremocyst with large pores. 



The exterior aspect is rather deceiving and the older American authors classi- 

 fied the species in Entalophora. The bifurcation of the segments confirmed this 

 reference but the longitudinal section proves their error (fig. 4). The ovicell is 

 buried in the thickness of the peristomial walls; unfortunately we have not yet had 

 the chance to section an ovicelled zoarium. 



Occurrence. — Pleistocene: Santa Barbara (very common), Santa Monica (rare), 

 and Dead Mans Island, off San Pedro, California (rare). 



Plesioty pes. —Cat. Nos. 68686-686SS, U.S.N.M. 



TUBUCELLARIA PUNCTULATA, var. MINOR, new variety. 



Plate 40, figs. 5, 6. 



The micrometric measurements are smaller; the tremopores are smaller and 

 more scattered. 



ar • .. [Peristome, 0.24 mm. „ . fi2=1.20mm. 



Measurements. — „ ., .' „ ., , Zooecia , „ T" 



[Penstomice, 0.14 mm. [Zs =0.40 mm. 



The constancy of these small micrometric measurements obliges us to sepa- 

 rate this variety from the well-known long-ago described species. 



Occurre?ice.— Pleistocene: Santa Barbara (rare) and Santa Monica (Tremochal 

 Canon), California (rare). 



Holotype.—C&t. No. 68689, U.S.N.M. 



Family PHYLACTELLIDAE Canu and Bassler, 1917. 



Genus PHYLACTELLA Hincks, 1880. 

 (For description see Bulletin 106. U.S. National Museum, p. 573.) 



PHVLACTELLA SPINOSISSIMA. var. MAJOR Hincks, 1884. 



Plate 39, figs. 8, 9. 



1884. MiuTonella spinosissima, var. major Hincks, Polyzoa of the Queen Charlotte Islands, Annals 

 and Magazine Natural History, ser. 5, vol. 13, p. 53 (sep. 27); p. 213 (sep. 42). 



Affinities.— In Miss Jelly 's Synon}Tnic Catalogue of Marme Bryozoa this species 

 is considered a sjmonym of Mucronella peacJd, var. octodentata Hmcks, 1880. We 

 believe this arrangement is erroneous because here the ovicell is recumbent and placed 



