RECORDS OF W.A. MUSEUM. 
[165 
AMBLYNEUSTES GRISEUS. 
Echinus griseus, de Blainville, 1825. Diet. Sci. Nat. Oursin, vol. 37, p. 81. 
Amblyoneusles griseus, L. Agassiz, 1841, Intro. Mon. Scut., p. IX. 
A rather small specimen (No. 5008) of this species is in the 
collection. From Fremantle Beach, W.A. 
HOLOPNEUSTES POROSISSIMUS. 
L. Agassiz and Desor, 1846. Ann. Sci. Nat. (3) vol. 6, p. 364. 
A specimen from Fremantle Beach, bearing the same number 
as the specimen of the preceding species from the same place (viz. 
5008), proves to be one of this species. 
HELIOCIDARIS ARMIGERA. 
Sicongylocenirotus armiger, A. Agassiz, 1872. Bull, M.C.Z., vol, 3, p. 55. 
Heliocidaris armiger, H, L. Clark, 1912. Mem, M.C.Z,, vol. 34, p. 350. 
Although the primary spines in these specimens are not quite 
so stout as in the type specimen, they are sufficiently so to distin- 
guish them at a glance from their nearest ally, H . erythyogramma. 
None of the specimens is large (h.d. ranges 25-38 mm.) but all 
seem adult. The longest primaries do not exceed 15 mm., and 
their thickness is from 1.5 to 2 mm. 
Fremantle Beach, W.A. One specimen. No. 5006. 
Fremantle, W.A. One specimen. No. 149. 
Cottesloe Beach, W.A. One specimen. No. 5036. 
HELIOCIDARIS ERYTHROGRAMMA, 
Echinus cry thvogrammus, Valenciennes, 1846. Voy. Venus,, Zooph pi. VII, fig. i. 
Heliocidaris erythrograiuma, L. Agassiz and Desor, 1846 (3) Ann. Sci. Nat., vol. 
6, p. 371 {eurythrogrammus lap. cal.) 
Although these specimens are a little larger than those of 
armigera, the spines do not exceed 15 mm. in length, but few of them 
are as much as i mm. in thickness, so that they seem longer than 
they are. There are no data with the two specimens, but they bear 
the numbers 171 and 179, and are said to be from West Australia. 
ECHINOMETRA MATHAEI. 
Echinus mathaei, de Blainville, 1825. Diet. Sci. Nat. Oursin, vol. 37, p. 94. 
Echinometra mathaei, de Blainville, 1830, Diet. Sci, Nat., Zooph., vol. 60, p. 206. 
The two specimens of this very common and widely distributed 
sea-urchin have no data with them. They bear the numbers 165 
and 167 and are said to be from West Australia. 
