130 PROCEEDINGS OF THE NATIONAL MUSEUM vOL. 106 



Description: Size: Length, 490; width, 430. 



Shape: Ovoid. 



Gnathosoma: Seta on palpal coxa rather short with long 

 setules. Seta on femur short with fine setules. Seta on genu 

 nude. All three setae on tibia nude, fairly long. Palpal claw 

 curved, cleft about half its length into two stout prongs, median 

 prong stronger. Tarsus rather long; in addition to the usual 

 setae a pointed seta about three-fourths as long as the spur is 

 located on the medial ventral surface distal to the central of the 

 three basal, feathered setae. Coxae punctate up to the galeae; 

 femur punctate over its entire surface. Galeal seta long and nude. 

 Cheliceral base strongly punctate. Cheliceral blade curved, with 

 distinct teeth (Hoffmann, 1944) ; blade not present on specimen 

 studied in U. S. National Museum. 



Legs: Leg I with three genualae — two dorsal in tandem and 

 one posterior — and a microgenuala. Tibia with two tibialae and 

 a microtibiala and eight nonspecialized setae. Tarsus with strong 

 tapered spur, a distal microspur, distinct subterminala and para- 

 subterminala, and a pretarsala. Leg II with coxal seta set in from 

 posterior margin, a genuala, two tibiala, a middorsal spur with 

 proximal microspur, and a pretarsala. Leg III with a single 

 genuala and single tibiala ; tarsus with a single long mastitarsala 

 on its dorsal surface near its base and 14 feathered setae. Setules 

 of feathered setae of all legs straight. Coxae of all legs closely 

 punctuate and all distal segments encircled with punctae. 



Scutum: About three-fifths as long as broad; anterior margin 

 sinuous; lateral margins slightly concave, diverge posteriorly; 

 posterolateral corners slightly extended; posterior margin very 

 slightly concave just medial to posterolaterals, deepb'" convex 

 posterior to the pseudostigmata, and broadly concave between 

 them; anterolateral setae not at the corners but set back on the 

 lateral margins; anteromedian seta set well back from anterior 

 margin; posterolaterals on the extended corners. All setae with 

 short, scalelike setules. Pseudostigmata widely separated, 

 slightly posterior to a line drawn between posterolaterals. Sen- 

 sillae clavate, the pedicel expanding to a long, ovoid head widest 

 about three-fourths its length from the base; head covered with 

 very short, pointed setules. Surface without ridges ; covered with 

 punctae except for an almost clear zone near the anterior margin 

 and around the anteromedian seta. 



Standard data of the single paratype from Mexico, D. F. : 



AW PW AP SB ASB PSB AL AM PL S 

 62 79 19 36 30 18 36 41 63 38 x 13 



