TRAP-DOOR SPIDERS. 255 



two distinct parts ; the curve of tins indentation is 

 directed forwards. The normal thoracic indentations 

 are well marked, but not very strong ; the surface of 

 the thorax, though shining, appeared under a lens to 

 be covered with fine rugulosities. Its colour is yellow- 

 brown ; a large triangular patch on either side of the 

 caput being tinged with orange, and the rest suffused 

 with dark brown. The caput is of a dark reddish 

 yellow-brown, showing (in spirit of wine) two longitu- 

 dinal bars, or strong lines, of a clearer orange yellow- 

 brown colour ; its surface is glossy, though, under a lens, 

 the sides of the fore part are very finely striated or ru- 

 gulose. These lines begin behind the extremities of the 

 hinder row of eyes, and gradually converge to a 

 point at the thoracic junction ; the ocular region and 

 central longitudinal line of the fore-segment of the 

 caput have some long and very prominent black 

 bristles. AVhen aHve, the cephalo thorax appears to 

 have been suffused with a purplish hue, correspondino- 

 to that of the abdomen and other parts. 



The ei/es form a rectangular figure, whose fore side 

 is a little shorter than the hinder one, and whose 

 transverse, or longest, diameter is as nearly as possible 

 double the length of its sliortest one ; the eyes of 

 the central or fore-central pair are small, and sepa- 

 rated by a diameter's distance from each other. The 

 hind laterals are the smallest of the eight, and each 

 is almost contiguous to the hind-central nearest to it, 

 this latter being of a sub-triangular foi-m, and sepa- 

 rated from the fore-central on its side by an interval 

 equal to that which divides the two fore-centrals, but 

 less than that which separates each fore-central from 

 the fore-lateral on its side. Looked at as in two 



T 2 



