266 PROCEEDINGS OF THE XATIOXAL MUSEUM. vol 



66. CTJCUMARIA GLOBOSA, new species. 



Station 4891. One specimen. 



Body sphaerical, with mouth and anus situated on the dorsal side, 

 not forming any sort of conical sipho. being contracted and scarcely 

 projecting beyond the general body surface. Length,. 9.5 mm .; 

 height, 8.5 mm. Color dirty white, integument stiffened by scale- 

 like plates. Tentacles 10, of which niidventral pair probably smaller. 

 Pedicels very minute, arranged in 2 rows in each ambulacrum, though 

 very sparse in dorsum where the zonal arrangement is also obscured. 

 The large scaielike plates of body wall are rounded, measuring 0.9- 

 1.5 mm. in diameter, with serrated margin. They resemble in struc- 

 ture very much those of SphztroiJt uria, only differing in that the spine is 

 very much reduced or totally absent. Some of them have a round 

 hole or a marginal incision, through which a pedicel passes out. The 

 introvert contains oblong, perforated plates, slightly knobbed, meas- 

 uring 140-180/1 long. Tentacles are supported with curved plates or 

 rods, slightly knobbed, 200-330^ in length. Supporting rods of pedi- 

 cels are irregularly branched or perforated, sometimes knobbed, meas- 

 uring 73-120^ in length. End plate 8O-100/I in diameter. Calcareous 

 ring consists of 10 segments, without- posterior prolongations. Res- 

 piratory trees small, with a few branches. Genital tubes unbranched. 

 Further details of internal organization can not be given owing to the 

 badly injured condition of the specimen. 



In spite of its resemblance to S phserotTiur-ia bitentaeulata Ludwig 

 and YpsQoihwria taUsmam Perrier in external features, this species 

 differs in having 10 ramified tentacles, none of which are especially 

 larger. Psolidium s'pTt<encum Sluiter is very closely alhed to the 

 present species, but its se alelike deposits are smaller in ventrum than 

 in dorsum and have each 3-8 spines. 



Habitat. — Off Goto Islands, west of Kyushu. 

 Type.— Cat. No. 34170, U.S.N.M. 



Genus SPH^ROTHURIA Ludwig. 



67. SPH^ROTRTRIA BITENTACULATA Ludwig. 



S phxrothuriu bit eni acid ata Ltd^vig. Bull. Mus. Comp. Zool.. Harvard Coll., vol. 



24. No. 4. 1593. pp. 112-113: Altai iss Holothurioidea, 1S94. pp. 141-155, 



pi. 12. figs. 16-17: pi. 14. figs. -5-14. — MrrsrKrai. Annot. Zool. Japon.. vol. 1. 



pt. 4." 1897. p. 149. 

 Ypsilothuria bitentaculata Exehler and Yakey. Les Holothuries de mer pro- 



fonde. 1905. pp. 57-88. 



Station 4906. One specimen. 



Station 4913. One specimen. 



Station 5054. Twenty-one specimens. 



Station 5055. One specimen. 



Station 5057. Six specimens. 



Station 50S8. Xine specimens. 



Station 5093. Ten specimens. 



