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ST. HELENA. 
Order Acaridka. 
There is work jet to be done under this order. The following 
have, however, been added to Mr. Walker’s list : 
Acarus, Linn. 
A. domesticus. — The Cheese-mite. 
Ixodes? Latr. 
I. plumbeus ? — Cow-tick. 
Leptus ? Latr. 
L. autumnalis P— This “ Hay-bug,” as it is called, is larger in 
size and deeper in colour than the English Harvest-bug, and may 
therefore be quite different. It is abundant during hay time, and 
has yet to be identified. 
CLASS V. — ANNELIDA. 
The late Dr. W. Baird described the following species of Earth- 
worms in the “ Linnean Society’s Journal : Zoology,” vol. xi. 1 871 
Lumbricus, Linn. 
*L. rubro-fasciatus, Baird.— About 2 to 3 inches in length, of 
a dirty yellowish colour, banded across the back with a broad^ fascia 
of a red hue. 
Megascolex, Temple. 
*M. (Pericheeta) Sanctse helena, Baird. — From 1 to 3 inches 
in length, of a dull red colour, with 86 rings about the body ; both 
species inhabit the earth in moist situations on the high land. At 
certain times in the year they may be seen lying in a dead and 
half dying state on the hard surface of the roadways. 
Y. AHNULOIDA, 
CLASS I. — SCOLECIDA. 
There is yet work to be accomplished, more than I have been 
able to do, in this branch; but, so far, the following will embrace 
pretty nearly the most abundant species of the Eckinodermata. 
