2IO Papers from the Marine Biological Laboratory at Tortugas. 



LeprsJia uvulifera n. sp. (Figs. 19 and 20.) 



Zooecia small, the surface shining and covered by small, smooth knobs. 

 Pores are wanting except for 3 to 5 large, marginal pores. Usually these 

 are placed as follows: One on either side near the orifice, one on either side 

 about half-way back, and a single pore at the posterior end. The orifice 

 is slightly broader than long, evenly rounded anteriorly, nearly straight 

 on the posterior border, hinge teeth scarcely noticeable. Peristome slightly 

 raised anteriorly and beset with about six slender spines. Posteriorly the 

 peristome rises into a strong, mucronate process, which in complete calci- 



FiG. 19. — Lepralia uvulifera, n. sp. 



Fig. 20. — The same. Portion of colony showing at the right 

 the orifice of a young zocecium. 



fication is divided at the tip into three sharp spines. A small avicularium 

 is present on one zocecium, situated somewhat behind the orifice near the 

 lateral border, with the pointed mandible pointing backward and outward. 

 The ocecium is comparatively large, heavily calcified, and covered with 

 knobs like those of the zocecium; a high umbonate process rises on the top, 

 and there is a single large pore on either side of the ooeciostome near the 

 base; the ooecial orifice is wide and high, with a calcified projection extending 

 nearly vertically downward into the orifice and bearing a close resemblance 

 to the uvula of the human palate, except that it is a little more truncate at 

 the tip. 



One small colony of perhaps three dozen zooecia incrusting the under 

 side of a Cupularia guiniensis at 10 fathoms. 



This species is certainly closely related to L. water si Calvet (1906, p. 

 412, pi. XXVII, fig. 11) from the Cape Verde Islands, but it differs in having 

 the umbo strongly trifid instead of merely pointed; in the more open form 

 of the ovicell, which partially incloses the anterior part of the peristome, 

 instead of being placed in front of it as in L. watersi; and also in lacking 

 the complete lower border of the ooeciostome shown in the figure of L. watersi. 

 Calvet's figure also shows the oral spines situated slightly outside of the 

 oral border, while in uvulifera the spines are on the border. 



