612 IVAR TRAGARDH 
Mandibles (fig. 137) with very short chela; upper jaw longer and nar- 
rower than lower jaw, with powerful terminal tooth and further back a small 
tooth on a level with pilus dentarius. Lower jaw with ventral margin thickened to 
a strong ridge which bends upwards at the base of the appendage in order to 
support it; it has two sharp teeth. The appendage is very long, mote than 
twice as long as the chela, shaped as a thin, hyalin blade, which is curved 
downwards at a right angle in front of the middle, where it is considerably 
widened, the whole structure most vividly resembling the beak of a bird. 
The palps (fig. 135) are slender; the Ist joint is more than thrice as long 
as it is wide, curved upwards and with two hairs in the distal half, on the 

Figs. 131—133. Pachylelaps hamifer n. sp. oF. 
131, Leg II (ambulacre missing). 132. Leg Il (ambulacre missing). 133. Sternal shield 
(hairs missing). 
inner side; 2nd joint slightly shorter and wider than the Ist, slightly curved, 
with one stout, short bristle distally on the inner side; 3rd joint shorter than 
the 2nd, straight, with two stout, short, perpendicular bristles close together 
near the middle, on the inner side; 4th joint clavate; §th joint very small, oval 
in outline, articulated in a deep excavation at the inner side of the top of 
joint 4, with large bifurcate bristle at the base. 
Maxille (fig. 34). The maxillary lobes are very long and slender and 
inserted on narrow projections, cut off obliquely at the top and carrying three 
pairs of the hypostomatic hairs. 
The legs. Legs I (fig. 132) very slender, with coxa constricted in the 
middle and bent upwards, with blunt tooth in the middle of ventral edge; 
femur with distinct basifemur, clubshaped; genu as long as femur, slightly 
curved; tibia slender, slightly constricted near the base, where it is bent a little 
