512 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Family MYRIOZOUMIDAE Smitt, 1867 



A description of this family and its genera is given in our 1923 



work. 



Genus MYRIOZOUM Donati, 1750 



MYRIOZOUM SUBGRACILE D'Orbigny, 1852 



Plate 65, figs. 9-13 



1889. 



Myriozoum subgracile Jelly, Synonymic Catalogue of Marine Bryozoa, 



p. 198. 

 1900. Myriozoum subgracile Waters, Bryozoa from Franz Josef Land, Lin- 



nean Society's Journal, Zoology, vol. 28, p. 69, pi. 9, figs. 4-8. 

 1912. Myriozoum subgracile Nordgaard, Campagne arctique du Due D'Orleans 



Bryozoaires, p. 9. 



Waters, 1900, has published a masterly study of this species and 

 we have no new information to add. Nordgaard, 1912, cites the 



Fig. 210. — Genus Lekythopora MacGillivray, 1882 



A-I. Lekythopora hystrix MacGillivray, 1882. A, B. Zoarium, natural size. 

 C. View of three ovicelled zooecia and an interzooecial avicularium, X65. D. A 

 sagittal section through an ovicell, X23 (A-D. After Levinsen, 1909). E — G, 

 Divers views showing the form and the arrangement of the peristomal avicularium. 

 H, I. Opercula, X55, and more magnified. (E-I. After Levinsen 1909 and 

 MacGillivray 1882.) 



Kara Sea (35-127 meters) and the Mourmane Sea (90 meters). In 

 order to establish that this is a circumpolar species, he has listed all 

 known localities where it has been dredged. There was an area 

 missing in the western Pacific which our discovery in the Sea of Japan 

 completes. 



Occurrence— D. 4807. Cape Tsiuka, Sea of Japan; 41° 36' 12" N.; 

 140° 36' E. 



Plesiotypes— Cat. No. 8324, U.S.N.M. 



