ART. 14 FOSSIL AND EECElSrT BEYOZOA CAISTU AND BASSLEE 121 



Genus BRYOCRYPTELLA Cossmann, 1906 



BRYOCRYPTELLA CONVEXA, new species 



Plate 28, Figure 8 



Description. — The zoarium encrusts fragments of shells. The 



zooecia are distinct, separated by a deep furrow, elongated, fusiform, 



very convex. The frontal is formed by an olocyst surmounted by a - 



detachable pleurocyst and is surrounded by large areolar pores. The 



avicularian cavity forms a salient boss surrounded by five or six 



pores. The apertura is semicircular, without iyrule or cardelles. 



The avicularium is round, cylindrical, opening into the peristomie 



perpendicularly to the operculum. The ovicell is large, globular; 



the pleurocyst is often incomplete and then limits a circular area. 



nr J K J. [^a = 0.13 mm. 



Measurements. — Aperturei, ^^^ ^ ^^ 



^ Ua = 0.15-0.20 mm. 



rj . 1X2 = 0.85-1.00 mm. 

 Ziooecmmi, „ .^ „ „„ 



U3 = 0.40-0.60 mm. 



Affinities. — The zooecial measurements are rather variable; the 

 width increases when the length diminishes. The zooecial structure 

 is absolutely identical with that of Bryocryptella torquata Jullien, 

 1903, from the Gulf of Gascogny, but the present species differs in 

 its incrusting instead of arborescent colony. The structure of the 

 ovicell being identical with that of the zooecial frontal, we can not 

 class the genus in the family Escharellidae. Moreover, Jullien 

 classed it in the family of Lepraliidae. Our specimens were dead 

 and deprived of their chitinous appendages. 



Occurrence. — Albatross Station D. 2650, Bahamas, 595 meters. 



Holotype. —C&t. No. 7463, U.S.N.M. 



BRYOCRYPTELLA RETICULATA, new species 



Plate 18, Figures 1-3 



?1873. Betepora reticulata Smitt, Floridan Bryozoa. Kongl. Svenska Veten- 

 skaps-Akademiens Handlingar, vol. 11, p. 69, pi. 13, figs. 242, 244. 



Description. — The zoarium is free, reticulated, with wide meshes; 

 the branches are formed by two longitudinal rows of cells. The 

 zooecia are little distinct, very elongated, with finely granular surface. 

 The peristomice is suborbicular; the apertura located at the bottom 

 of a deep peristomie is not visible. A small avicularium is lodged 

 in the proximal portion of the peristomie. The ovicell is very convex; 

 its contours are indecisive; it opens into the peristomie. 



Measurements. — Peristomice, Diameter, 0.15-0,20 mm. 



ry . [Xs = 0.70-0.80 mm. 

 Zooeciaj, _„ 



Affinities. — The indistinct zooecia and the reticulated zoarium 

 distinguish this species clearly from Bryocryptella torquata Jullien , 



