ART. 22. CYCLOSTOMATOUS BRYOZOA — CANU AND BASSLER. 133 



who was a brave soldier, an able diplomat, and a courteous gentle- 

 man, and whose charming nature made for him many friends in 

 the United States. 



Occwn^ence. — Cretaceous (Campanian) : Meudon, near Paris, 

 France. 



Cotypes.—Q2im\ collection and Cat. No. 68973, U.S.N.M. 



RETEPORIDEA SUBRAMOSA, new species. 



Plate 22, figs. G-9. 

 Description. — The zoarium is free, branched; the branches are 

 orbicular, dichotomous, and divergent. The tubes are arranged on 

 the exterior face; the peristomes are little salient, thin, and ar- 

 ranged in regular quincunx. The mesopores are numerous, hex- 

 agonal, funnel shaped. On the dorsal the vacuoles are hexagonal, 

 arranged in quincunx, 



[ Diameter of peristome 0.12 mm. 



Distance between peristomes .50mm.. 



Separation of peristomes .40 mm, 



Diameter of branches 1.50 mm. 



Measurements. 



Afjinities. — This species is quite similar to RetepoHdea ramosa 

 D'Orbign}^ 1850, but differs in its much more divergent branches, 

 and in its tubes arranged always in quincunx and more scattered. 



Occurrence. — Cretaceous (Campanian) : Meudon, near Paris, 

 France. 



Cotypes.—Canu Collection and Cat. No. 68974, U.S.N.M. 



Genus SULCOCAVA D'Orbigny, 1854. 



3854. iiulcocava u'Orbigny, Paleontologie fraugaise, Terraiu Cretac^, vol. 5, 

 p. 1021. 



The ovicell is a globular sack surrounding many rows of peristomes. 

 It is placed on the sharp edge of the zoarium and spread out over 

 half of the broad face. The tubes are funnel shaped, with peristome 

 long, with dorsal gemmation, ramified at all heights of the zoarial 

 axis, recurved at their extremity. A v^vy thick lamellar epitheca 

 surrounds the zoarium and consolidates the peristomes. The orifice 

 is narrow and smaller than the tube. The zoarium is covered by 

 longitudinal sulci. 



Genotype. — Sulcocava cristata D'Orbigny, 1851. 



Range. — Coniacian-Maastrichtian. 



Affinities. — This genus differs from Parascosoecia in the absence of 

 mesopores. Gregory classed the genus in the Idmoneidae, but the 

 peristomes are not grouped in true fascicles, as in the true Idmonea^ 

 and the ovicells are quite different. 



