AET. 14 FOSSIL AND RECENT BEYOZOA CANU AND BASSLEK 135 



Genus CREPIDACANTHA Levinsen, 1909 



CREPIDACANTHA SETIGERA Smitt, 1873 



Plate 21, Figure 10 



1873. Hippothoa setigera Smitt, Floridan Bryozoa. Kongl. Svenska Veten- 

 skaps-Akademiens, Handlingar, vol. 11, p. 58, pi. 15, fig. 206. 



Ttr ^ \ J. ilia = 0.10 mm. 



Measurements. — Aperturei, 



^ U<x=0.08 mm. 



„ . [Xs = 0.60 mm. 

 ^^^"H. = 0.45-0.50 mm. 

 Affinities. — This species differs from CrepidacantTia grandis, dis- 

 covered by us in the PhiHppines, only in the absence of a small oral 

 mucro and in the much smaller dimensions of the aperture. Very 

 probably it is the same species. 



Smitt discovered only one specimen deprived of its marginal spines 

 but ornamented with its setiform mandibles somewhat shorter than 

 the zooecia. Our specimen is still more incomplete. The comparison 

 with other species is therefore necessarily difficult and uncertain. 

 The colonies encrust fragments of shells. 



Occurrence. — Albatross Station D. 2639, Straits of Florida; 25° 04' 

 50" N.; 80° 15' 10" W.; 56 fms; coral sand. 

 Tortugas Islands, 97 meters (Smitt) 

 Plesiotype.—Ca.t. No. 7827, U.S.N.M. 



CREPIDACANTHA LONGISETA. new species 



Plate 21, Figures 3, 4 



Descri'ption. — The zoarium encrusts corals and hydroids. The 

 zooecia are distinct, separated by a deep furrow, elongated, pyriform; 

 the frontal is convex, smooth, or granular, bordered laterally by lin- 

 ear pores and by 11 very long marginal spines. The aperture is 

 small, suborbicular, formed of a semicircular anter and a small con- 

 cave poster separated by two very short cardelles; the peristome is 

 broad, little salient, with a small mucro in its proximal part. The 

 ovicell is large, globular, placed on the zooecium itself, closed by the 

 operculum; the pleurocyst which covers the olocyst is incomplete 

 and leaves a frontal area. On each side of the aperture there is a 

 small avicularium; the setiform mandible is longer than the zooe- 

 cium and very flexible. 



T,, ^ A ^ \lia = 0.\0 mm. 



Measurements. — Apertureu ^^^ 



^ Ua = 0.10 mm. 



\Lz = 0.4:4: mm. 



Zooeciai, _ ^ . 



Us = 0.34 mm. 



Affinities. — This new species differs from CrepidacantTia poissonii 



Savigny-Audouin, 1826, in its avicularia placed on each side of the 



aperture and not below it. It differs from CrepidacantTia setigera 



Smitt, 1873, in its smaller dimensions and its long retiform mandible. 



