NORTH AMERICAN LATER TERTIARY AND QUATERNARY BRYOZOA. 



173 



somewhat elongated, and bears a wide rimule which is rounded and deep; the 

 peristome is wide, very little salient, and bears spines. The two vibracula are 

 salient and orbicular, the ovicell is small, convex, smooth. 



fAa=0.15mm. „ . {is =0.60-0.75 mm. 



Measurements. -Apevtural^ ^^ ^^^2 mm. ^ooeciaj ^^ ^o_45_o.55 m^. 



Affinities. — This species differs from Mastigophora pesanseris Smitt, 1872, in 

 its larger micrometric measurements, in its frontal granules larger and more appar- 

 ent, and in its vibracula placed at the level of the rimule. 



Occurrence. — Miocene (Bowden marl) : Bowden, Jamaica (very rare) . 



Holotype.—Cat. No. 68694, U.S.N.M. » 



Fig. 32. — Genus Temachia JuUien, 1882. 

 A-C. Temachia opulenta JuUien, 1882. A. An incrusting specimen, X 8.5, from the GiUf of Gas- 

 cony. B. Ancestrula and ancestrular zooecia, X 29. C. An ovicelled zooecium, X 29. 



Genus TEMACfflA JuUien. 1882. 

 1882. Temachia Jullien-, Dragages du Traiailleur, Bulletin de la Societe de France, vol. 7, p. 510. 



Zooecia suberect, dilated at the base and narrowed like the neck of a bottle 

 above; peristome split anteriorly and deprived of spines; ovicell globular \uth the 

 opening correspondmg to the incision in the peristome. Zooecia of origin (ances- 

 trula) with a frontal wall entire and lattice like, with two strong lateral spines at 

 the level of the orifice. (Translation, after Jullien.) 



Genotype. — Temachia opulenta Jullien, 1882. Recent. 



Genus CREPIDACANTHA Levinsen, 1909. 



1909. Crepidacantha LEViNaEV, Morphologic and Systematic Studies on the CheUostomatous Bry- 



ozoa, p. 266. 



The zooecia, whose aperture has strong hinge teeth and a compound, well- 



cliitmized operculum, arc in the proximal half provided with 9 to 12 very long 



marginal spines and 8 to 11 small uniporous pore chambers (dietcllae) alternatmg 



as a rule with small intermediate chambers, each of which has an uncalcified spot 



