46 NOTES. 



STRONGYLOCENTROTUS TUBERCULATUS. 



This fine Urchin, which attains a considerable size, is very 

 common at Lord Howe's Island. I have not met with any from 

 the mainland. The spines are long, strong, sharp, and solid, 

 finely striated longitudinally ; on the ambitus and below the 

 shafts they are distinctly flattened, and in color of a uniform rich 

 olive or olive brown, although finely striated they feel smooth 

 and polished ; the flattened spines are more numerous and 

 distinct in the young than in the adult. I can find no description 

 of the spines of this species in any work at my disposal. The 

 test closely resembles that of S. franciscanus, but the porriferous 

 zone is not so petaloid on the actinostome ; the spines in spirit 

 specimens ai'e often of an olive-yellow color. 



STRONGYLOCENTROTUS ERYTHROGRAMMUS. 



This species is very plentiful in Port Jackson, and may be 

 found between the tides at almost any time, it is also 

 occasionally dredged in 10 to 20 fathoms. In color the spines 

 vary from rich purple to pale brown or cream color. It 

 seems to attain to a greater size to the South, especially in 

 Tasmanian Waters The tests vary considerably in height, some 

 being only one-third of their diameter. From the coast near 

 Newcastle we have received some large specimens, measuring 

 three and four inches across and 15 in height They are in 

 habit gregarious, a dozen or more may be found clustered round 

 one stone. They are seldom found on the sandy flats, and the 

 few dredged there are always of small size ; occasionally 

 malformed tests are found. 



SPHJERECHINUS AUSTRALIA. 



Taken on sandy bottoms in 5 to 10 fathoms, sometimes close 

 to the shore, comparatively rare on the Australian Coast. 

 MR. TENISON- WOODS states that it is found in Bass' Straits, 

 King's Island, and Tasmania. MR. MORTON obtained specimens 

 in the Solomon Islands. 



TEMNOPLEURUS TOREUMATICUS. 



Although this species has been obtained both during the 

 voyages of the "Chevert" and "Alert," and also by our 

 Assistant, MR. ALEX. MORTON, on the Australian Coast, it is 

 far from being common ; a good series is still among the 

 desiderata of the Australian Museum. It is found on sandy 

 mud bottoms in from. 5 to 20 fathoms. 



