Bd. VI: 4 ) THE ECHINOIDEA. 57 
viridescente, spinis albescentibus; ambulacra decem bifariam poribus instructa; tuber- 
culis minimis; spinis tenuibus et brevibus». 1 
In the Atlas of the »Voyage de la Frégate Venus», Zoophytes PL 4, Valenciennes 
gives an excellent, coloured representation of the species, naming it Echinus porosus . 2 
That this is really the species now called Loxechinus albus cannot be doubted (how 
L. Arassiz & Desor could recognize it as Molina’s Echinus albus is not so ap- 
parent). In the same work is figured another species, Echinus erythrogrammus 
(PI. 7. I.). On comparing a denuded younger specimen of L. albus with the quoted 
figures of *Ech. erythrogrammus » one must be struck with the close resemblance 
with that species, and seeing further that the Ech. erythrogrammus is marked as 
being from Chili, one cannot help thinking that it is really the same as Loxeclt. 
albus , not the Australian species identified as Strongylocentrotus erythrogrammus by 
A. AGASSIZ in the »Revision of Echini». Wishing to have this question settled I 
wrote to Professor JOUBIN, the director of the Museum d’histoire naturelle of Paris, 
asking if he could possibly lend me the type specimen for direct comparison with 
L. albus. With the greatest liberality, for which I cannot thank him enough, he 
granted my request. 
There are two specimens, belonging to two quite different species. One is 
Toxocidaris gibbosus (VAL.); it is marked »Chili, M. Gay». The other, which is 
evidently the specimen figured in the »Vénus», and which must be regarded as the 
type of the species erythrogrammus , has no locality — it is only marked »Mrs. 
Hombron et Jacquinot 1841». According to a communication from Prof. JOUBIN 
these two gentlemen were the naturalists of the Expedition of »L’Astrolabe» and 
»La Zélée», 1837 — 4 °- This expedition visited both South America and Australia 
(Tasmania). The specimen may thus have come from either of these coasts. The 
locality »Chili» given in the Atlas of the »Vénus» cannot be relied upon, as it 
may probably have been taken from the other specimen. We cannot therefore con- 
clude from the locality of the specimen, whether the name erythrogrammus ought 
to belong to the South American species or to the Australian species with which it 
was associated by A. AGASSIZ. — A close examination of the figures in the »Vénus» 
shows that there must have been made another mistake. It is easily seen that the 
detailed figure of the actinal side, 1. b., cannot — if it is not very badly drawn 
which does not at all appear to be the case — possibly belong to the same species 
1 The work is not found in the libraries of Copenhagen; the above quotation I owe to Dr. R. Hart- 
meyer at the Berlin Museum, who kindly copied for me the quotations wanted. The same was the case 
with Molina’s »Saggio sulla storia naturali del Chile» of which only translations are found in the Copen- 
hagen libraries. 
2 The type specimen is not in the collection of the Museum d’hist. naturelle in Paris, as Professor 
JOUBIN has kindly informed me. 
8 — 100133. Schwedische Südpolar- Expedition içol — -IQ03. 
