HORN EXPEDITION-ARANEID^E. 
343 
Heteropoda calligas/er, Thoroll. 
LocnlUy. —Oodnadatta. Previously recorded from Sydney and Peak Downs 
(Queensland). 
Heteropoda irframaculata, sp. n. 
Ceplialothorax bright canary-yellow, with whitish-yellow hair on bi’east part ; 
cephalic part bare and shiny ; mandibles pale straw colour, rather thickly covered 
with shoi’t, yellowish-grey hair and long, yellow bristles; the hair fringe on the 
mandibles and maxilhe a bright pale brownish-pink, the latter and lip pale straw 
colour, brownish-yellow bristles on the front edge; sternum golden yellow, all with 
pale yellow hairs. Abdomen pale yellow with short yellow and white and long 
brownish haii’, a longitudinal bi’own median stripe broad anteriorally and tapei'ing 
towards the rear from a third of way down back to just above the spinnerets. 
Underneath irregular, small dark brown spots scattered over the space between 
the genital aperture and the spinnerets. The palpi pale yellow, the tarsal joint 
covered with thick grey hair. Legs pale straw colour, all the joints thinly 
besprinkled with pale yellow hair; spines brown. A thick grey scopula on all the 
tarsi and metatarsi. 
Cephalothorax rather highly arched, highest in front, steeply sloping at the 
rear; broad in front, slightly rounded at the sides; shorter than patella and tiliia 
TV. ; 2 mm. longer than broad, and 2 mm. narrower in the front than in the 
middle. Cephalic part arched, bare and shiny and standing up from the breast 
part. 
Eyes. —Front row straight along the upper edge ; middle eyes one-and-a-half 
diameter of the side eyes and half diameter apart ; the middle eyes from the side 
eyes half diameter of the side eyes. Rear row straight, equal in size, half the 
diameter of the front middle eyes and two of their own diameters apart. Front 
middle eyes fi’om the rear middle eyes the diameter of the front middle eyes, and 
the same distance from the margin of the clypeus. 
Mandibles long, perpendicular, arched, slightly divergent, with thick rough 
hair on their inner margins. A thick pink fringe along the falx edge. Fangs 
small and slightly curved. 
Maxillee upright, parallel, rounded on the outer and front margins, sloping oft’ 
to the inside, and thickly fringed with long stift' hair. 
Lip straight in front, half the length of the maxilla?, constricted at the base, 
and narrowing again from above the constriction to the front. 
