ARACHNIDA FROM NORTHERN QUEENSLAND— RAINBOW. 113 



CepJtalut/iora^. — Obovate, pubescent, sliiniug, dark yellow. 

 I'ars cephalicu arched, sides declivous, segmental grooves dis- 

 tinct ; ocnZar a/'ea broader than long, cUjjjeus narrow, luteous. 

 Furs thoracica strongly arched, lateral and posterior angles 

 finely pencilled with black ; radial grooves distinct ; luedian 

 Jovea profound ; initr(ji)ial band broad, luteous. Eyes. — Of a 

 pearl-grey lustre, ringed with black ; normal. Legs. — Moder- 

 ately long, strong, pubescent, armed with i-ather stout spines 

 golden straw-yellow, femoral joints and patellse anuulated with 

 dark brown (nearly black) ; other joints annulated with smoky- 

 yellow ; relative lengths: 1,2,4,3. Falpi. — Rather short, 

 straw-yellow, similar in clothing and armature to legs. Max- 

 illce and Labi ant. — Normal ; dark brown at base, apices yellow. 

 Ster)tu))i. — Shield-shaped, arched, dark brown, relieved in front 

 by a transverse bar of straw-yellow ; in addition to this bar 

 there are four lateral, and one posterior, coucolorous nodules. 

 Abdomen. — As viewed from above gibbous at both extremities, 

 arched, and overhanging base of cephalothorax ; superior sur- 

 face dark brown (nearly black) in front, and ornamented with 

 a broad, silvery band of uneven outline running down the mid- 

 dle ; from just beyond the middle this silvery ornamentation, 

 which is finely reticulated with dark brown, is continued down 

 the side (PI. xxiii., fig. 37) ; posterior extremity terniinated by 

 three prominent tubercles, of which the median is the largest ; 

 sides similar in colour to superior surface. Eiyigynmn. — 

 Dark brown, raised, somewhat like a horse-shoe in outline, 

 and having two lateral pits and a reflexed tongue-like process 

 running down the middle. In the different examples before 

 me this tongue-like process varies somewhat in length, but in 

 none does it extend beyond the rima epigasteris. 



Obs. — The 9's vary considerably both in size and colouration, 

 but all are remai'kably beautiful. In some examples the abdo- 

 men is exceedingly brilliant and metallic, whilst in others it 

 is very dark, almost black, with silvery patches at the sides 

 only, and having a yellowish-grey band down the middle ; an- 

 other specimen has its sides silvery-grey, reticulated with 

 black, and a dark, yellow-brown band running down the mid- 

 dle. Then, again, the cephalothorax in some instances is of a 

 golden straw-yellow, and in others a rich mahogany-brown. 

 The legs of the different examples also differ widely in inten- 

 sity of colouration, some being strongly annulated, and some 



