ARACHNIDA FROM NORTHERN QUEENSLAND— RAINBOW. 57 



yeuerally, but somewhat lighter iu the median area of superior 

 surface; posterior extremity, sides and inferior surface orna- 

 mented with white streaks and yellowish patches. Epigijnuni. — 

 A transverse plaque with two circular pits, which latter are 

 separated from each other by a space equal to twice their 

 individual diameter (Fig. 36). 



Hnh. — G-ordonvale, forest, September 12, 1912. 



Theridion xiphocosmum,^ sp. )iov. 



(Plate XV., fig. 37.) 



$ Cephalothoxax, 1 mm. long, 0.7 mm. broad ; abdomen, 2 

 mm. long, 1.5 mm broad. 



Gephalothorax. — Ovate, arched, smooth, shining, yellow. 

 Pars cephalica ascending, rounded in fi'ont, sides steep, seg- 

 mental groove distinct; ocular area broader than long ; cliipeus 

 narrow, deep. Pars thoracica sti'ongly arched, radial grooves 

 present, but not distinct ; thoracic fovea, Aee\)\ iiiargijial hand, 

 nari'ow, dark-brown. Eyes. — Normal. Leys. — Long, slender, 

 tapering, straw-yellow with brownish annulations, clothed 

 with tine hairs, and armed with short, w^eak spines. Relative 

 lengths : 1, 4, 2, 3. Palpi. — Short, straw-yellow, similar in 

 clothing and armature to legs. Falces. — Concolorous with 

 cephalothorax, arched, tapei-ing, sparingly hairy. Ma.i'ilJie. — 

 Also concolorous, ai'ched. apices inclining inwards, sparingly 



hairy. Lahiinii This is also concolorous, short, broad, ai'ched, 



sparingly haii-y. Stenuon. — Shield-shaped, concolorous, 



smooth, shining, tei'minating obtusely between foui'th pair of 

 coxBP ; surface fui-nished with a few short, stiff haiis. Ahdo- 

 me)i. — Ovate. Slightly overhanging base of cephalothoi-ax, 

 strongly arched, faintly pubescent, yellow, ornamented with 

 extensive patches of snowy white (Fig. 37) : on the superior 

 surface tlie snowy white patch is relieved by a median and 

 somewhat conventional design and delicate tracing; lateralh* 

 the ])atches are reticulated, and are again further relieved by 

 dark-bi-own markings ; inferior surface, dull yellow. Epiyy- 

 nnni. — A short, oval, dark-brown, transvei'se plaque, with tw^o 

 deep circular pits situated closely together. 



"' i'(f/)0Kixr/i09 ^^^ oruamented witli snowy white. 



