556 *' THETIS " SCIENTIFIC RESULTS. 



This is an excellent series of this interesting species, but I 

 have nothing to add to the original description. Perhaps ifc 

 ought to be I'epeated here that this is the species referred to by 

 Mr. Edgar R. Waite"^" in his general account of the "Thetis" 

 work, as " Phormosoma hoplacantha " ; he states that between 

 " two and three hundred examples " were taken " in eighty 

 fathoms off Botany Bay." His further statements deserve 

 quotation : — 



" When first removed from the water, these Echinoderms pre- 

 sented a globular form and heaved with a panting or pulsating 

 action, Water oozed from them till they became quite flat ; if 

 one of globular form was pricked with a knife the fluid ran out, 

 the larger examples supplying quite a pint. We placed a number 

 of these Echinoderms in a large tin, stacking them to the height 

 of about two feet; in a short time they had shrunk down to a 

 layer of not more than six inches in depth, and were covered by 

 the water which exuded from them. We found wounds from 

 their spines to be very painful." 



ECHINOMETRA MATH^EI. 



Echinus mathcei, de Blainville, Diet. Sci. Nat., xxxvii., 1825, p. 94, 

 Echinometra mathcei, de Blainville, Diet. Sci. Nat., Ix., 1830, 

 p. 206. 

 Seven specimens from Lord Howe Island, where this species is 

 said to be the commonest sea-urchin. 



STRONGYLOCENTROTUS TUBERCULATUS. 



Echinus tuberculaius, Lamarck, Anim. s. Vert., iii., 1816, p- 50. 

 Strongyl.ocentrotus tuberculaius, Brandt, Prodrome, 1835, p. 64. 



Three specimens from Lord Howe Island, where it is said to be 

 common. 



HOLOPNEUSTES INFLATUS ? 



Amhlypneustes inflatus, A. Agassiz, Bull. Mus. Comp. ZooL, iii., 



1872, p.56. 

 Holopyieustes injlatus, A. Agassiz, Rev. Ech., Pt. 1, 1872, p. 136. 



One specimen from Station 50. In Shoalhaven Bight, 15-18 

 fathoms ; sand. 



The specimen is so small (18 mm. in- diameter) that its specific 

 identification is open to some doubt. 



37 Waite— Austr. Mus. Mem., iv., 1899, p. .18. 



