NO. 1555. HAWAIIAN HOLOTHVRIANS— FISHER. 659 



Close to the terminal plate of the pedicels a few fenestrated plates 

 about 0.1 mm. in diameter are present. These are not infrequently 

 bilateral. 



This is one of the commonest holothurians inhabiting- Hawaiian 

 shores. It is rather common al)out the ishmds of Hawaii, on the 

 leeward side at least, where it iidialiits pools in the lava rock, in com- 

 pany with Aethiopyga maur/tiaixt and Iloloflnwla ci/iermcens. In this 

 region it does not appear to range out of the shore tide pools. The 

 species is a very wide-ranging one, being found, according to TheeFs 

 and Lampert's summaries, in the following localities: Red Sea, Zanzi- 

 bar, Madagascar, Djedda, and Indian Ocean. Querim])a, Celebes, Java, 

 Ualan, Radack Islands, Australia (Barrier Reef), Hawaiian Islands, 

 Societ}' Islands, Philippine Islands, Samoan Islands, Fiji Islands, Nico- 

 bar Islands, Amboina, Batchian, Molucca Islands, Macassar, Timor, 

 Pedang, Pulo Tibul, Darros, Tahiti, Jamaica, Havana, Florida, Puerto 

 Cabello. 



*HOLOTHURIA MONACARIA (Lesson). 



Psoius monacarius Lesson, Centurie Zoologique, 1830, p. 225, pi. lxxviii. 



Tentacles, 20; ventral surface with three longitudinal I'ows of pedi- 

 cels; dorsal surface with four series of papilhe. Mouth surrounded 

 by about twenty, often inconspicuous, papilhe. Deposits : Tables and 

 buttons. Tables with rounded smooth disk, having a central hole sur- 

 rounded by four to twelve peripheral holes; spire, consisting of four 

 upright rods and one cross beam, terminates in twelve teeth or more. 

 Oval smooth symmeterical Inittons with three or four pairs of holes, 

 mostl}" with three. Polian vesicle single; one small madreporic canal in 

 dorsal mesentery. Brownish with ventral surface, the papilhe, and a 

 space around them lighter; or dirty yellowish white, speckled with 

 brown or greenish brown on l)ack. 



Theel" remarks that '*in a small specimen from Mauritius, which 

 is pro))abl_y young, the pedicels are placed in three double or alterna- 

 ting rows on the ventral surface, an arrangement which is not so 

 distinct in the remaining forms. Even the small dorsal papilla do 

 not always seem to be placed in ver^^ distinct rows. * * * The 

 disks of the tables are slightly undulated on margin. The synmietri- 

 cal or slightly asynmietrical buttons have often more than six holes, 

 though this number is most connnon. The papillie have a yerj rudi- 

 mentary terminal plate, and curved, rod-like perforated deposits. 

 Besides, both pedicels and papilhe contain numerous crowded buttons 

 and tables, and near the ends bilateral perforated plates." 



Not secured by Albatross expedition. This species has a wide range, 

 extending from Zanzibar through the East India region to the Philip- 

 pine Islands, east to Hawaii, and through the South Sea Islands to 

 Australia. For a list of localities see Theel and Lampert. 



« Challenger Holothurioidea, Pt. 2, p. 217. 



