( ^7 ) 
holders, greenlfli, perpendicular; with black hairs, and blackllli claws. The eggs are about 
one hundred and forty in number, round and greenifli, with white circles on one fide. The 
young are excluded about the end of July. It is reprefented of its proper fize at fig. 5, and 
(lightly magnified at fig. 4. 
CHAPTER VIII. 
OF THE SECOND TROOP OF SPIDERS, OR 
WATER-SPIDERS. 
Having hitherto found but one fpecies of thefe, I cannot give their generic charafters, or 
any other mark befides their being generally in or under water. 
This Spider may eafily be found in the middle of May, plate 9, fig. 6 ; and when it ftands 
motionlefs on the furface of fmall lakes or ponds, may eafily be taken in a fine net, with a 
brifk or quick motion. Sometimes they are taken with much lefs trouble than at other times. 
The eyes are placed in a double feries : the four upper ones are twice as large as the inter- 
mediate ones. The two intermediate ones are placed together, as the fpots in the figure fhew. 
The length of the legs is i, 4, 2, and 3. They are dufky, and have unequal hairs. The 
thorax is brownifli, bright, with fine hairs towards the eyes. The abdomen a little oblong, 
glaucous, and, as it were, filky with fine down: it has four incifures marked with black dots. 
When this Spider is in the water, the abdomen appears like quickfilver, or polilhed fteel. 
This fliining appearance proceeds either from an inflated globule furrounding the abdomen, 
or from the fpace between the body and the water, arifing from its repulfive force, by which 
the water cannot approach nearer than two lines. This is, indeed, very evident; for the Spider ^ 
when wifliing to inhale the air, rifing to the furface of the water, with its thorax ftill 
plunged in the water, but the abdomen with its tubercles, rifing juft to the furface, or a little 
above it, opens and brifkly (hakes the tubercles ; and during this operation, it clearly appears 
that a deep cone of hair furrounds the abdomen, and keeps the water from approaching it, 
or that the water, on account of the repulfive power of the abdomen, cannot collapfe and 
wet it. 
Though 
