HA WAIIAX HOLOTHURIANS—FISITER. 



(^83 



regular than the figure. The specimens may be the young of this 

 species. At least the tables approach nearer those of carnom than 

 those of ui'Ui'i'aiji or parra. 



MESOTHURIA MURRAYI (Theel). 



Plate LXXI, tigs. 1, ^<i-h. 



Hololhuria iii Kira [/i Thekl, Cliallenger Holothurioidea, Pt. 2, 1886, p. ]S5, pi. x, 

 tigs. 16-18. 



General form oblong, subcylindrical, tapering slightly toward ante- 

 rior end; rather more so toward posterior extremity. Mouth and 

 anus terminal, but the former directed ventrally. Tentacles 10 to 20, 

 short, and with rather small circular peltate crowns. Ambulacral 

 appendages in the form of ditierent-sized, slender pedicels thickly 

 scattered all over the body, those along either ventrolateral ambu- 

 lacrum largest. Body wall rather thin in fully extended alcoholic 

 specimens, veiy minutely roughened by spires of tables. Deposits: 

 Tables with a large, oi)en, subcircular, scalloped to substellate disk 

 having a central subcircular hole and six to eight nuich larger ovate 

 peripheral primary holes, and freciuentl}' in addition as luany, or fewer, 

 much smaller secondar}' perforations at the tips of the spokes separat- 

 ing the primar}^ holes; spire made up of three rods and one cross- 

 beam, flaring at suuuuit, and each rod ending in two or three short mul- 

 tifid prongs. No supporting rods in pedicels, but very much reduced 

 tables with a simple annular almost rudimentary disk and an irregidar 

 spire of three rods and one crossbeam. Color in alcohol, dirty 

 whitish, brownish to purplish l)rown. Length of a preserved speci- 

 men, somewhat contracted, 05 mm. 



Loecditltfs. — Thirty-five specimens were taken at the following- 

 stations: 



Lht of stations. 



('Cruise of 1891, 3 specimens. 



Since no specimens of this species were kept in formalin, it is not 

 easy to surmise the form of the living animal. Breadth of circlet of 

 tentacles about 10 to 12 mm. A characteristic feature of this species 

 is the diversity in size of pedicels, those along either ventrolateral 

 ambuacrum being much larger than any others and forming a well- 

 defined band. The smaller, more or less papilliform, slender pedicels 



