HORN EXPKDITIOX-AKAXKID^E. 
341 
rather narrower at the base. Long dark hairs coming from the sternum, over the 
base of the lip and the maxilhe, also similar long and thin hairs on the outer margin 
of the maxillai. 
Sternum cordate, Hat, coriaceous, covered round the sides with down-lying 
whity-brown hairs, bare in the middle. 
Palpi slightly longer than the cephalothorax, the femoral joint bent outwards 
to conform to the margin of the clypeus ; thick pale hair on the cubital, digital, 
and radial joints. 
Legs powerful and long, shiny, femoral joints thickened in the middle. 
Scopula on all metatarsi and tarsi, di\'ided at the foot pad into two. Thick matted 
hair, white on the haunches ; two long powerful pectinated claws, straight from 
the base and then strongly curved at the point; about ten short pectinations along 
the straight part; thick hard claw-tuft divided into two and pointed at the end. 
Abdomen one-and-a-half times as long as broad, ovate, truncated in front and 
tapering at the rear, acorn-shaped ; a loose white skin over darker inside coloured 
matter, covered with yellow and grey short down-lying hair ; across the anterior 
portion of the sides and below the epigyne on the under side a dark stripe is trans¬ 
versely stretched, broad and indistinct at the posterior margin. 
Epigyne a horseshoe-shaped ridge of shiny brown cuticle, disconnected at the 
apex and base, enclosing a white fatty sheet. 
Alammillie four, conical, single-jointed, rounded or flat at the top, brown, with 
dark-brown hairs on the upper part. 
The skin wrinkles on the abdomen form live transverse depressions, with a 
median ridge along the posterior half of the ujjper surface. A median depression 
reaches on the under side from the epigyne to the spinnerets, and all are filled with 
short matted grey hair. On tibia III. and IV. there is one spine on the upper 
side. 
This powerful spider by the setting of its legs appears to border on the Citi- 
grades. In the shape of the cephalothorax, sternum, lip, maxilhe, mandibles, 
epigyne, and in the arrangement of the eyes, it resembles a large dark Isopeda 
pessleri, but may be readily distinguished by its comparatively much longer 
abdomen, shorter palpi, even length of pairs I. and II., and shorter pair III. 
