ECHINODERMATA — CLARK. 56t 



COLOCHIRUS AUSTRALTS. 



Colochirus austral is, Lading, Arb. Zool. Inst. Wiirzbur^, ii , 187-i, 

 ]). 88. 



Two specimens from Station 13. Off Cape Three Points, 41-f>0' 

 fathoms ; sticky mud and sbell. 



Although both specimens are very young, there seems no doubt 

 that they belong to this species. 



COLOCHIRUS SPINOSUS. 



HolotJmria spinosa, Quoy and Gaimard, Voy. de I'Astrolabe, iv.,. 

 1833, p. 118. 



Colochirus spinosus, Selenka, Zeit. f. Wiss. Zool., xviii., 1867, 

 p. 117. 



One specimen from Station 10. Off Broken Head, 28 fathoms ;. 

 fine sand. 



Although the specimen is obviously young, it agrees not only 

 with the description and figures of Quoy and Gaimard, but with 

 specimens of this species from Port Jackson. I have also com- 

 pared it with a specimen of Slereoderma validum, Bell, received 

 from Professor Bell himself, and I am entirely at a loss to see 

 how that species is to be distinguished from spinosus. Bell*^ 

 says, " Mr. Ramsay tells me that the naturalists of Sydney have 

 been in the habit of regarding S. validum as the Holothuria 

 spinosa of Quoy and Gaimard : this determination cannot, I 

 think, be accepted." After a comparison of Bell's specimen, and 

 other similar ones from Port Jackson, with the description and 

 figures of Quoy and Gaimard, I find myself forced to side with 

 "the naturalists of Sydney," especially as Bell does not point out 

 a single character by which his species is to be distinguished from^ 

 the earlier one. 



MOLPADIA DISSIMILIS,*"^ sp.no v. 



(Plate Iviii, figs. 12-21.) 



Body moderately stout, 70 ram. long by about 30 in diameter;- 

 both oral disc and caudal appendage so contracted no measure- 

 ments could be made, nor could the number of tentacles be 

 determined. In another specimen the total length is 45 mm.; 

 diameter, 15 mm.; caudal appendage, 4 mm. long; diameter of 



*2Bell— Zool. Rep. " Alert," 1884, p. 151. 



^i dUsimilis=^\\TA\ke, in reference to its distinctness from the following, 

 species taken at the same {Station. 



