256 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 48. 



The larger specimen is in formalin, and measures 72 mm. long and 

 14 mm. in diameter. Except that the end plate of pedicels is always 

 single, the specimens well answer to the description given by Edwards. 



Habitat. — Pacific coast of North America. 1 



53. CUCUMARIA CALIFORNICA Semper. 



Cucumaria calif ornica Semper, Holothurien, 1868, p. 235, pi. 39, fig. 16; pi. 40, 

 fig. 10. — Edwards, Four Species of Pacific Holothurians, 1910, pp. 601-603, 

 pi. 19, figs. 5-14. 



Cucumaria frondosa Edwards, Albatross Holothurians, 1907, pp. 59-60. 



Station 4777. One specimen. 



Station 4778. One specimen. 



Station 4779. One specimen. 



Station 4784. One specimen. 



Medni Island on fish line. One specimen. 

 The largest specimen, very strongly contracted, measures 135 mm. 

 by 80 mm. The general body configuration is very like that of C. 

 japoniea, while C. miniata is distinguishable from both of them by 

 its being markedly elongated. 



Habitat. — From the North Pacific Ocean to the Galapagos. 2 



54. CUCUMARIA CHRONHJELMI Theel. 



Cucumaria chronhjelmi Theel, Challenger Holothurioidea, pt. 2, 1886, p. 105. — 

 Clark, Echinoderms from Puget Sound, 1901, p. 334, pi. 4, figs. 11-20. — 

 Mitsukuri, Actinopodous Holothurioidea, 1912, pp. 235-238, pi. 8, figs. 

 71-72, text-fig. 46. 



Dockton, Puget Sound, Washington. Six specimens. 



The largest specimen, with contracted introvert, measures 90 mm. 

 in length and 30 mm. in diameter. In the introvert reticulated 

 cups are slightly larger and more regular in shape than those in gen- 

 eral perisome. The greater diameter averages 80//, with a range of 

 54-130/£. There are, besides these, elongated plates, 350// long, with 

 reticulated knobs. 



Habitat. — Vancouver Island (Theel, 1886); Pacific Grove, Califor- 

 nia; and Puget Sound, Washington (Clark, 1901); Dock, Port Town- 

 send, Washington (Edwards, 1907); Pacific coast of Japan from 

 Hokkaido to Province Shima (Mitsukuri, 1912). 



55. CUCUMARIA VEGM Theel. 



Cucumaria xegx Theel, Challenger Holothurioidea, pt. 2, 1886, p. 114. — Clark, 

 Zool. Anz., vol. 25, No. 677, 1902, p. 563. — Edwards, A Ibatross Holothurians, 

 1907, p. 59. — Mitsukuri, Actinopodous Holothurioidea, 1912, pp. 255-257, 

 pi. 1, fig. 9. 



Dutch Harbor, Unalaska Island. Eight specimens. 

 Unalaska. Twenty-two specimens. 



i See Edwards, 1910, p. 607. =» Idem, pp. 602-603. 



