248 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 48. 



high spire; second, somewhat smaller tables with serrated disk and 

 imperfect spire; and third, four-holed buttons without spire. Of 

 these three kinds the last named are most abundant. 



Augustin seems to have had before him specimens of various stages 

 of development. His S. roseus is based on young specimens of this 

 common species. 



Habitat. — Amboina? (Lampert, 1885); Hongkong (Theel, 1886); 

 Sitka (Clark, 1902); Hakodate (Selenka, 1867); Yokohama (Ludwig, 

 1887); Jogashima and Aburatsubo, Misaki (Augustin, 1908); south- 

 ern Sakhalin and east coast of Korea (Britten, 1908); numerous 

 localities on the coasts of Japan, from the Kuriles to Kagoshima, the 

 southernmost part of Kyushu, including Sakhalin and east coast of 

 Korea to Vladivostok (Mitsukuri, 1912). 



41. STICHOPUS NIGRIPUNCTATUS Augustin. 

 Plate 9, figs. 13a, b. 



Stichopus nigripunctatus Augustin, Japanische Seewalzen, 1908, pp. 7-8, pi. 1 



fig. 2, text-fig. 5. 

 Stichopus depressus Augustin, Japanische Seewalzen, 1908, pp. 11-13, pi. 1, fig. 4, 



text-figs. 8-9. 

 Stichopus owstoni Mitsukuri, Actinopodous Holothurioidea, 1912, pp. 175-178, 



pi. 2, figs. 18-20, text-fig. 31. 



Station 4940. One specimen. 



Station 4941. Two specimens. 



Station 5046. One specimen. 



Station 5092. Six specimens. 



Station 5094. Three specimens. 



No label. One specimen. 

 The largest specimen measures 260 mm. long, 60 mm. broad, and 

 50 mm. in thickness. Some of the specimens from station 5092 are 

 quite young, the smallest being only 27 mm. long. Number of lateral 

 papillae varies 17-27 on each side, but is much reduced in young ones. 

 In the smallest specimen there are only 12 lateral papillae, and on each 

 dorsal ambulacrum about 10 papillae of similar size are arranged in a 

 zigzag row. Distribution of pedicels agrees well with the statements 

 of preceding authors. In the youngest specimen, however, pedicels 

 are in a double row in mid ventral ambulacrum, and in a single row in 

 each ventrolateral ambulacrum, alternating with the lateral papillae. 

 A noteworthy fact in this species is the change which the calcareous 

 deposits undergo during the growth of the animal. In the.yomigest 

 specimen above mentioned, the deposits of the body wall as well as of 

 the pedicels and papillae are all well developed tables (pi. 9, figs. 

 lSa, b). The disk is large and round, with entire margin, 60-135/z in 

 diameter. The spire consists of 4 pillars, connected with each other 

 by 3 or 4 crossbeams, 50-65/* in height. In an advanced stage, repre- 

 sented by a specimen 70 mm. long, there are found two sorts of tables, 



