-560 "THETIS " SCIENTIFIC RESULTS. 



being ascertained. As the Cuvier's organs are well-developed, 

 in spite of the small size (50-75 mm.), it is probable that this is 

 the species of which Mr. Etheridge*" writes, "The smallest and 

 • commonest of the four, a Holothuria, of a brownish colour, emits, 

 when touched, a white, sticky, fibrous discharge, which congeals 

 like india-rubber." 



HOLOTHURIA FUSCO-OINEREA. 



Molothuria fusGO-cinerea, Jager, De Holothuriis, 1833, p. 22. 



Four specimens from Lord Howe Island, 



These specimens are all small (40-50 mm. long) and are pro- 

 bably the young of this widely distributed Indo-Pacific species. 

 I believe the species referred toby Etheridge'* ^ as "a large form, 

 a foot in length, perhaps Holothuria vagabunda^ Selenka, of a 

 blackish-brown colour," is probably the adult form of which 

 these specimens are the young. 



HOLOTHURIA MACLEARL 



Molothuria macleari, Bell, Zool. Rep. "Alert," 1884, p. 152. 



One specimen from Lord Howe Island. 



Although this specimen is more than twice as large as Bell's 

 type-specimen (115 mm. as against 49 mm.), I believe the peculiar 

 coloration (brown, with pedicels and papillae whitish, in striking 

 contrast) and the similarity in the spicules, warrant calling this 

 specimen maclea7-i. It has only nineteen tentacles, one stone 

 canal, and one long, polian vesicle. I infer from the colour that 

 this is the species of which Etheridge*-"- says, "A third and 

 rather common Holothurid, brown, mottled with white, we believe 

 to be Sticophus chloronotus, Brandt " ; so far as I know, Stichopus 

 chloronotus, Brandt, is always olive-brown or olive-green, without 

 white marks of any sort. It is, however, quite possible that the 

 species may occur at Lord Howe Island, and that it may there 

 be mottled with white. Colour is, as a rule, an unreliable specific 

 character among the Holothurians. 



CUGUMARIA MIRABILIS. 



•Gucumaria mirabilis, Theel, Chall. Rep. Zool.,xiv.,Holoth.,Pt. 2, 

 1886, p. 61. 

 Two specimens from Station 13, Off Cape Three Points, 41-50 

 fathoms ; sticky mud and shell. 



*oEtheridge-Austr. Mus. Mem., ii., 1, No. 1, 1889, p. 32. 

 *-*Etheridge— Xoc cit., p. 39. 



