CYAMIDA. 79 
shape and size to those of the second segment, but com- 
posed of five joints, the coxze being soldered to the seg- 
ments to which they are attached. The tail is very 
minute and rudimental: on its underside in the male are 
perceived two pairs of slender, deflexed, horny append- 
ages; each of the two preceding segments being armed on 
the ventral surface with a pair of strong spines. In the 
female the antepenultimate segment of the body is fur- 
nished on its under-surface with two small transverse 
valves, uniting into a tubercle, which closes the orifice of 
the generative organs. 
The analogy which these animals exhibit with the 
Pediculi among hexapod insects, and with Pycnogonum 
amongst the Arachnida, merits attention. 














; a ak Nh 










MEN TARRING A BOAT. 
