240 
E. A. ANDREWS 
his claws back and forth. That the male can thus be misled by 
the lack of male resistance and continue in the process of conjuga- 
tion was shown by the above case of a male that was conjugating 
with a dead, inert male. The following experiment also shows that 
the male may be deceived, or at least be led to conj agate with a 
male, even if alive, provided the male acts passively, and does not 
resist like a male. 
A male was given another male that had been operated on 
twent3^-four hours before so that it could not walk but only move 
its legs, vaguely, as the result of destruction of the brain. This 
inactive male was at once seized, turned, mounted and treated 
just as if it were a female for more than hour and a half, during 
which the active male succeeded in carrying out the usual crossing 
of the fifth leg, though this was rendered difficult by the fact that 
the leg on the right was lacking and one on the left lacked two 
segments. Though the abdomen was contracted and thrusts of 
the stylets executed, there was no approach to the region where 
the sperm pocket would be in a female, owing to the fact that 
the hooks of the male did not engage in the joints of the assumed 
female. That this was due to some fault of the active male 
was proved by removing him and manipulating a/iother male upon 
the paralyzed male, when the hooks were made to engage as if the 
paralyzed one was female. There is no special organ of the female 
that receives the hooks of the male, but the same joints in the 
legs of both sexes may be so used. 
The above male after being separated from the paralyzed male 
was given a female with brain destroyed twenty-four hours and 
dead for some hours. The male paid no attention to the dead 
female till it was shoved towards him, when he instantly siezed it, 
turned it over, mounted upon it, grasped its claws, crossed the left 
fifth leg, contracted the abdomen, and made thrusts of the stylets, 
all within one minute. But the female's left claw was not held 
in the male's right and, as if very purposely, he shoved the female's 
claw up with his second chelate leg then held it with the others 
in his right. The hooks, also, were not fixed, and five or six efforts 
were made before one of the hooks was engaged in the joint of 
the female's second leg. After two hours and a-half the male 
