AMYMONBE. 29 
First segment of the body produced ventrally into 
a large triangular or broadly falciform promontory ; 
last segment of the thorax and first of the abdomen 
coalescent, produced in the female into a doubly- 
hooked projection, and in the male into a long trian- 
gular process, which nearly meets that of the 
cephalothorax (represented by the dotted line in 
fig. 1); abdominal segments and tail sete very short. 
Anterior antennz in the female 8-jointed, slender, and 
tapering; nearly as long as the first body-segment ; 
joints decreasing in length from the first to the sixth, 
last three nearly equal; in the male the first, second, 
and fourth joints are long (fig. 2) and nearly equal, 
the third, fifth, and eighth very short; a hinge between 
the sixth and seventh joints; in both sexes the outer 
margin of the limb is clothed with short hairs. Poste- 
rior antenne (fig. 3) 3-jomted, long and slender, the 
first joint giving attachment to a small 1-jointed, 
secondary branch, which bears several apical setz ; the 
last joint is clawed at the apex, and has likewise three 
or four moderately long sete. Mandible (fig. 4) 
slender; palp 2-jomted. Maxilla (fig. 5) slender; 
palp 2-jointed, first joint short, second long, slender, 
and curved, each joint bearing three or four strong, 
curved, apical sete. First foot-jaw 3-jointed (fig. 6), 
last jomt very slender, and, like the previous one, 
giving origin to a setiferous process. Second foot- 
jaw (fig. 7) very long and strong, forming a powerful, 
chelate, prehensile limb, the hand elongated, ovate, 
bearing a comb-like series of teeth on the inner 
margin; claw long and curved. The four pairs of 
