84 GAMASIDS. 
merous that crops of currants and other berries have been 
abandoned. These mites seem to be able to penetrate stockings 
and drawers, and other thin clothing, for though generally 
most numerous and annoying about the legs,they are found all 
over the body. Cats and dogs, from their prowling habits 
in field and garden, suffer greatly. They scratch and nip 
their skin with their teeth, so much so that they are some- 
times supposed to be suffering from the itch, when it is only 
from a daily reinforcement of these mites. Fig. 49 shows a 
skin infested with these mites, and the imbedded heads after 
the removal of the parasites. | 
“Kirby and Spence mention a similar insect which occurs 
in Brazil, abounding in the rainy season, particularly during 
the gleams of sunshine on fine days that 
intervene, and which resembles a small 
point moving very fast. These animals 
they say, get upon the linen and cover 
it in a moment; afterward they insinuate 
themselves into the skin, and occasion 
<atiue. olin of mance Ia0st. intolerable stein et Nema 
showing imbtrer Helles, With difficulty extracted,and leave behind 
them large livid tumors, which subside 
ina day or two. An insect very tormenting to the wood- 
cutters and settlers on the Mosquito Shore and Bay of Hon- 
duras, and called by them the ‘‘doctor,”’ is thought to be 
identical with this. It is also stated on good authority that 
still more serious consequences have been known to follow 
the bite of a mite, related to the above if not the same spe- 
cies, common in Martinique, and called there the dete rouge. 
When the English soldiers in camp were attacked by these 
creatures, dangerous ulcers succeeded the symptoms just 
mentioned, which in several instances became so bad that 
the limb affected had to be amputated.”’ 

D. GAMASIDS. 
(Gamaside. ) 
The species of mites belonging here are either found in 
damp places on the ground, or are parasitic onsome animal. 
They possess filiform or thread-like feelers, mandibles with 
