508 



BULLETIN 106, UNITED STATES NATIONAL MUSEUM. 



and is provided with an incomplete ooecial cover and by the possession of pore- 

 chambers (dietellae)." (Levinsen.) 



Genotype. Rhynchozoon (Lepralia) ~bii<pinoxa Johnston, 1849. Recent. 



G H 



T. hirsutum Bufik f. donxiculatum Busi: 



tubulatum Busk 



T. victorieneis Busk 



FIG. 144. Genus Triphyllozoon Cami and Bassler, 1917. 



A-D. Tripliylloeoon moniliferum MacGillivray, I860. A. Zooecia of var. mtinita Hincks, 

 1880; X 40. B. Ovicelled zooecium of var. m unit a Hincks, 1880, X 85, showing the trifoliate 

 stigma (tstg) of the ovicell and the spiramen (sp) of the peristomie. (A, B after Waters, 1804.) 

 C. Zooecia showing articulated spines. D. Opereulum of the principal varieties. (C, D after 

 MacGillivray, 1SS5.) 



E-L. Opercula and mandibles. E. TripUyHoxoon formosum MacGillivray. (After Mac- 

 Gillivray. 1885.) P. T. hirsutum Busk, 1884. (After Waters, 1909.) G. T. hirsutum Busk, 1884. 

 H. T. denticulatum Busk, 1884. I. T. tubulatum Busk, 1884. J. T. columniferum Busk. 1SS4. 

 K. T. contortoplicatum Busk, 1884. L. T. victorienste Busk, 1884. (G-L after Busk, 1884.) 



Genus SCHIZOTHECA Hincks, 1877. 



1877. Schisotheca HINCKS, On British Polyzoa, Pt. II, Classification, Annals Magazine 

 Natural History, ser. 4, vol. 20, p. 528 ; 1880. British Marine Polyzoa, p. 283. 



"Zooecia with a suborbicular primary orifice, the lower margin sinuated; the 

 secondary orifice raised, tubular, notched in front. Ovicell terminal, with a fissure 

 in the front wall, never closed by the operculum." 



Genotype. Schizotheca (Lepralia) fissa Busk, 1858. Recent. 



Levinsen classified this genus in the Reteporidae, where we also believe it better 

 placed. 



