198 
THE VOYAGE OF H.M.S. CHALLENGER. 
A. Tentacles twenty. 
1. Deposits — tables together with buttons or hollow fenestrated ellipsoids. 
Mulleria nobilis, Selenka, 1867 ; Semper, 1868. {^) Holothuria maculata (subgenus 
Microthele), Brandt, 1835 (according to Ludwig, 1881). 
The robust tables have the spire terminating in sixteen to twenty teeth. The 
hollow fenestrated ellipsoids form a thick layer. 
Rahitat . — Zanzibar (Selenka), Mauritius (Haacke), Philippine Islands (Semper), 
Guahan (Brandt), Sandwich Islands (Selenka). 
(Mus. Holm.) Some specimens from the Fiji Islands. Colour almost black, speckled 
with lighter tint. Dorsal papidse more thinly scattered than the ventral pedicels, 
and of about the same size as or smaller than these. In the contracted state the 
dorsal surface seems to have some low protuberances, especially along the sides of 
the body. The anal teeth are small and surrounded by five groups of papdlse, 
each group corresponding in position with a tooth. The tables are thinly scattered, 
consisting of an irregularly rounded disk with smooth undulated margin and 
pierced with a large central and several smaller peripheral holes ; the spire, 
formed by four rods and one transverse beam, terminates in twenty or more 
teeth. In one specimen it becomes evident that the papillae partly run out 
from the body-wall itself, partly from more or less considerable protuberances, 
which for the most part are placed on the ambulacra. 
Mulleria hadra, Selenka, 1867. 
Habitat . — Society Islands (Selenka). 
Like the preceding species, except in the conformation of the calcareous ring. Accord- 
ing to the figTires given by Selenka, the radial pieces of the ring in Mulleria hadra 
are narrower but much higher than in Mulleria nobilis, and possess anteriorly a 
single notch, while the latter species has no less than three low incisions. 
Mulleria flavo-castanea, n. sp. 
Deposits — tables and buttons. Disks of the tables with smooth margin and 
perforated with a large central hole and several smaller peripheral ones ; 
the spire, built up of four rods and one transverse beam, terminates in twenty 
or more teeth. The buttons are large, oval, commonly with more than six (seven 
to twelve) holes ; they are either completely smooth or provided with one, two, 
or more small elevations, which are mostly placed on the middle beam. 
Habitat . — Madeira (Mus. Holm.), 
Length, 100 mm. Colour — auburn, with a well-marked light yellowish space round 
the dorsal papiUge ; papiUae themselves and pedicels dark auburn ; tentacles 
lighter inclining to yellowish-green. Tentacles surrounded by papillse. Anal 
teeth very minute, built up of a calcareous network. Pedicels crowded, 
