604 CHARLES LincoLn EpwArDs, 
varying to the form of supporting rods. The spicules are more or 
less crowded and usually placed at right angles to the surface of 
the body. 
The large perforated plates described by SEMPER as located in the 
body-wall of the cloacal region occupy an annular space varying from 
22—5,4 mm in length and from 1,6—3,4 mm in width. These 
plates (Fig. 16), are fan-shaped, or irregularly round, with several 
hundred larger and smaller holes. The mean size of the plates is 
425x380 u with a range from the size of the ordinary body-wall 
plates to that of Fig. 16 with 1059 holes, and an area of 1350950 u. 
Usually the plates are smooth with occasional over-arching bars and 
are more or less interlocked into a, general mass throughout the 
body-wall surrounding the cloacal region. B&ıTTEn, 1906, does, not 
find the large perforated plates of the cloacal region in his specimens. 
Vestigeal anal teeth are found in some individuals and not in others. 
Habitat. — Japan, SEMPER, 1868; MıtsuKurı, 1896; Sachalin 
and Wladiwostock, BrITTEn, 1906; Molucca, SLUITER, 1895. 
Localities ofthe 8specimens in the United States 
National Museum. Off Japan, Hakodate Bay, depth from 11,5 
to 15,5 fathoms. 
Cucumaria miniata (BRANDT). 
1835. Cladodactyla (subgen. Polyclados) miniata. 
1857. Pentacta miniata STIMPSON. 
1867. Oucumaria albida SELENKA. 
1885. (Oucumaria japonica LAMPERT. 
The specimen from the Stuttgart Museum described by LAMPERT, 
1885, and those by Crark, 1902, and by Epwarps, 1907, as (Cucu- 
maria japonica, are essentially different from SEMPER’s species and 
agree with the holothurids of this collection which in accord with 
the excellent description of Lupwıs, 1881, are identified as (ueu- 
maria miniata Branpor. I agree with Lupwıs that the Cucumaria 
ulbida described by SELENKA, 1867, in which there are many (to 60) 
small stone-canals and with small end-plates in the pedicels, is 
synonymous with this species. 
Form. — In general the body is similar to Cucumaria frondosa 
but the introvert is more slender and from one-half to one-third of 
the length of the body may be retracted. 
Size in centimeters. — The contracted body of the adult 
