NORTH AMERICAN LATER TERTIARY AND QUATERNARY BRYOZOA. 



85 



are distinct, club shaped, wnth long, convex, and porous gymnocyst. The mural 

 rim is thin and granukr. The opesium is elliptical, elongate, surrounded b}- a 

 salient rim: the two condyles are large and median. The cryptocyst is deep, 

 smooth, and small. 



,, ^ „ . ?io = 0.14 mm. 



Measvrements. — Opesia , „ ,„ 



^ /o = 0.10 mm. 



Zooecia 



i2=0.50 mm. 

 Z2 = 0.20 -0.22 mm. 



AJfiiiiities. — Tliis species differs from Corynoslylus labiatus in its unilamellar 

 segments with only two zooecial rows and in the absence of a salient lip proximal 

 to the opesium. Only the fragments figured have been found; they are extremely 

 fragile. 



Occurrence. — Lower Miocene (Bowden horizon) : Cercado de Mao, Santo Do- 

 mingo (rare). 



Cotypes.— Cat. No. 68515, U.S.N.M. 



A.Cellaria B. Erina C.Cianotremella D.Euginoma 



E . Mcliccriia 



Fig. 14. — Genera of the family Cellariidae Hincks, ISSO. 



A. CcUaria Authors. C. simiosa Hassall, 1841. X 50. Recent. (After Hincks, 1880. i 



B. Erina Canu 1908. E. patagonica Canu, 1908. Cretaceous. (After Canu, 1908.) 



C. Cianolremella Canu, 1911. C. gigantea Canu, 1911. Cretaceous. (After Canu, 1911.) 



T). Euginoma}u\lieu,lSS2. E. vmnifomns inMien, 1882. X 21. Recent. (After Jullien, 1882.1 

 Upper right-hand figure, zooecium enlarged, showing ovicell. 



E. Melicerita Milne-Edwards, 1838. .V. charhs-worthi Busk, 1859. X 25. Pliocene, (.\fter 

 Busk, 1859.) 



Family CELLARIIDAE Hincks, 1880. 

 Genus CELLARIA Authors. 



(For description see Bulletin 106, U. S. National Museum, p. 272.) 



CELLARIA FISSURIFERA. new species. 



Plate 34, figs. 1.5-18. 



Descriftion. — The segments are cylindrical, slender at the base. The zooecia 

 are rhomboidal, distinct, adjacent or partially separated by a very deep furrow: 

 the mural rim is thin, salient, sharp, and ornamented with small tuberosities: the 

 cryptocyst is smooth, deep, scarcely convex. The apertura is semilunar, sur- 



