12 PSYCHE [October 
black, mottled with blackish yellow. ‘The abdominal segments were orange-yellow, 
with small black spots. The head was prominent and the cremaster was long. 
The moth is too well known to need description, as it is common, often flying 
in the daytime. 
THE ARACHNIDA OF THE GALAPAGOS ISLANDS. 
BY KARL R. COOLIDGE, PORTERVILLE, TULARE CO., CALIF. 
Tue collection of Arachnida made by the California Academy of Sciences’s 
Galapagos Expedition in 1905-06, which is now in my hands, numbers one hun- 
dred and thirty-three specimens, not including the Scorpionida and the Acarina, 
which I have not yet seen. But seventeen of the forty-one species of Araneida re- 
corded from the Islands are represented, and the Phrynida, Pseudoscorpionida and 
Solpugida include a single species each. Apparently none of the species warrant 
description as new, although the identity of the false-scorpion is somewhat doubtful. 
The present collection is the second largest ever made on the Galapagos archi- 
pelago. ‘The first collection of importance was made by the Petrel Expedition in 
1875. Seven species were enumerated by Butler in his report of this collection 
(Proc. Zool. Soc. London, 1877). In 1887-88 the Albatross visited the Galapagos, 
and Marx (Proc. U. S. National Museum, vol. XII, 1889) reports ten species, three 
of which Butler had previously recorded. By far the largest and most complete 
collection was made by the Stanford-Hopkins Expedition in 1898-99, the results of 
which included about six hundred and fifty Arachnids. Bank’s report on these was 
published in the Proceedings of the Washington Academy of Science, vol. IV, 1902. 
Prof. V. L. Kellogg also published a briefer abstract of the entomological and arach- 
nological collections in PscHys, vol. 9, p. 173, 1901. Perhaps the most interesting 
feature of the present collection is the series of Solpugids, Ammotrecha solitaria Banks, 
obtained, sixteen in number, from five different islands, Charles, Indefatigable, 
Chatham, Abington, and Wenman. Hitherto, A. solitaria has only been known 
from a single specimen, the type, from Iguana Cove, Albemarle Island. Banks, the 
author of solitaria, remarks, “the presence of a Solpugid is unexpected, and it must 
have been a rare accident that stranded one of these animals so far from the main- 
land.” But the fact that it is now known from six of the islands would indicate that 
it is not an introduced, but an endemic, species. ‘The Academy’s expedition also 
made small collections in Arachnida on Cocos Island and in Lower California. 
