NO. 1555. HAWAIIAN IK ILOTHURIANS— FISHER. 647 



the Atlantic (Florida, Madeira), Red Sea (Kosseir), and over the 

 greater part of the Indo-Pacitic region (Seychelles Islands to Samoan, 

 and Hawaiian Islands.) 



*ACTINOPYGA NOBILIS (Selenka). 



Hololhuria (yubgen. MicroUieU') xiavidula Bk.vxdt, Prudr., 1S.'!5, p. 54. (Not to be 

 confused with Sporadipus (Acolpos) ijuicnldlns Braiidt, Prodr., 1835, p. 46, 

 which is Holothuria arenicola Semper.) 



Mi'iUeria nubills Selenk.v, Zeit. fiir Wiss. Zoologie, XVII, 1867, p. 313, pi. xvii, 

 figs. 13-15. 



This species is attributed to the Hawaiian Islands by Seleidva, bnt is 

 not present in the collection brought home by the tisheries steamer 

 Alhatro.sx. The following diagnosis is from ThrcTs monograph, page 



Color ahnost Vjlack, speckled with lighter tint. Dorsal papilla' more thinly scat- 

 tered than the ventral jiedicels, and of about the same size or smaller than these. In 

 the contracted state the dorsal surface seems to have some low protuberances, espe- 

 cially along the sides of tlie body. The anal teeth are small and surrounded by five 

 groups of pai)illie, 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 by a large central and several smaller peripheral holes; the spire, 

 formed by four rods and one transverse ])eam, terminates in twenty or more teeth. 

 (Teeth as few as 16.) The hollow fenestrated ellipsoids form a thick layer. 



ACTINOPYGA OBESA (Selenka). 



Plate LXVII, fig. 3. 



Mi'iUt'rla ohem Selexk.v, Peitnige zur Anatumie u. Systematik der Holothurien, 

 Zeitschr. fiir Wiss. Zool., XVII, 1867, p. 312 



General form roljust, oblong, blunt" at both ends. Mouth ventrally 

 turned, probably not always so, as in some much contracted individuals 

 it appears terminal. Anus terminal, surrounded by five calcareous 

 teeth. Tentacles 20, rather broadly peltate. Ventral surface covered 

 with numerous pedicels which are for the most part retracted within 

 the body, but which appear to form three indcliniU^ rows. Papilhe 

 scattered (entirely retracted), less lumierous than pedicels. Perisome 

 thick and leather3\ Deposits: Rather hnely granulated simple rods. 

 Color in alcohol, dark chestnut-brown. Largest contracted specimen 

 180 mm. long and about 7o to 80 mm. broad. 



Locality. — La3'san Island (T specimens). 



All the specimens are too nuich contracted to furnish any details as 

 to general habit. The tentacles seem to var}" from lU to 21. As indi- 

 cated in the diagnosis the pedicels are mostl}' withdrawn. By slicing 

 otf a thin layer of the ventral surface the darlv pigment is removed, 

 and in the largest specimens the pedicels appear to be more crowded 



« This species was not observed in the living state, and all the specimens are badly 

 contracted. The general shape is evidenth' similar to that of M. maurUkma. 



