CHAMBERLIN: THE ARACHNIDA. 199. 
free areas over which the lighter hairs unmixed with dark extends from 
each side. Bristles of legs shorter proximad, becoming longer and 
more numerous especially on tibiae ventrally and on metatarsus above 
as well as laterally and ventrally; bristles dark proximally, becoming 
light rufous distally, rather coarse. Integument of abdomen above 
dark, somewhat dusky brown, ventrally lighter brown, with several 
small obscure white spots on each side; bristles of dorsum subdense, 
forming a light brick-red area. 
Eye-tubercle black, well defined, moderate in height, highest 
between posterior median eyes, more strongly convex anteriorly than 
posteriorly. Eye-area trapeziform, the posterior row being distinctly 
longer than the anterior, the difference typically distinctly more 
marked than in peruvianus (up to 85:78); area from a little less than 
half as long as greatest width to a little more thus also differing from 
peruvianus. Anterior row of eyes from moderately procurved to 
nearly straight, much more procurved in anterior view than in dorsal. 
Anterior median eyes with diameter two thirds that of laterals; about 
two thirds their diameter apart, less than their radius from the laterals. 
Posterior lateral eyes about three fourths the diameter of the anterior 
laterals, less than their radius from the latter. Posterior medians 
pyriform in outline, being narrowed to a point caudad and widely 
rounded cephalad, (Plate 7, fig. 3). 
Head moderately elevated, in outline slightly convex, highest a 
little caudad of eye-tubercle. Fovea straight or vaguely procurved, 
short and deep. 
Sternum longer than wide. Posterior sigillae about their length 
from margins. Median ones submarginal; anterior marginal. 
Mesal margin of furrow or chelicera bearing a row of fourteen 
teeth. 
Labium wider than long, truncate distad. Spinules in a narrow 
band (about four rows deep) across distal end, the spinules not dense. 
Spinules on proximal end of endite rather numerous. 
Anterior surface of coxa I with longer in part semiprone hairs and 
some of the short, slender, distally obtuse or clubbed hairs such as 
are present in peruvianus but in addition below the suture with 
numerous dark, strongly chitinized spiniform bristles, these more 
numerous distally, some rather more slender ones also occurring 
above suture. 
Tarsal claws four or five (anterior and posterior of leg I respectively), 
proportionately shorter, more slender and more uniform than in 
peruvianus. On the posterior claws, which are longer and propor- 
