NORTH AMERICAN ACROLOPHIDAE — ^HASBROUCK 591 



harpe, indistinctly fused, glabrous except for setose and subdigitate 

 ventrocaudal margin of sacculus, apical portion broadest and expanded 

 somewhat ventrad, basal portion very slender, basal extremity 

 narrowly rounded; cucullus set off from costa and sacculus by dorsal 

 and ventral constrictions and area of reduced sclerotization, large, 

 elongate, broad, heavily punctate and setose ectad and entad and 

 especially so in apical third, apical portion narrowing distad and 

 curving slightly dorsad, apex evenly rounded. 



Transtilla with arm rather slender, of medium length, rather widely 

 separated from and subparallel with dorsal margin of costa, glabrous, 

 terminating acutely slightly distad of basal extremity of harpe. 



Uncus simple, except at extreme apex. Dorsal aspect: base 

 glabrous, with cephalic margin emarginate mesad; lateral margins 

 heavily sclerotized, sublinear, gradually converging distad into uncal 

 process. Uncal process indistinctly fused with base, concave be- 

 neath, gradually narrowing and curving ventrad toward apex; apex 

 sparsely setose and moderately expanded into pair of minute, acute, 

 heavily sclerotized, laterally flattened, divergent processes. 



Gnathos fused, reduced, glabrous, well sclerotized especially along 

 lateral margins, thickened dorsoventrad, directed ventrocaudad, apex 

 narrow but evenly rounded. 



Anellus large, elongate, membranous, unarmed, juxta absent. 



Aedeagus elongate, slender, cylindrical, asymmetrical, nearly gla- 

 brous. Lateral aspect: basal two-thu'ds curving ventrad and caudad 

 through angle of approximately 180" resulting in basal and apical 

 portions of aedeagus pointing in almost same ventrocaudal direction, 

 approximate basal sixth markedly and irregularly expanded ventro- 

 caudad, apical thu-d subhnear; small apical portion opening laterad 

 and ventrad, directed somewhat ventrad, with dorsal half heavily 

 sclerotized and with or without several minute spines, with ventral 

 half weakly sclerotized and flattened, extreme apex acute. 



Vesica rather short, slender, membranous, unarmed. 



Type. — cf and 9 types in the British Museum (Natural History). 



Type locality. — "Arizona." 



Distribution. — Southwestern United States. Arizona. 



Sources of material. — American Museum of Natural History 

 (5 cfcf, 1 9); Cornell University (5 & &)', University of Kansas 

 (4 cf d'). 



Specimens examined. — 15 (14 cfcf, 1 9), from 5 localities: 



Arizona: Baboquivari Mountains, 4 cf cf (no date, F. H. Snow); Fort 

 Grant, 2 cT d" (Pinaleno Mountains, July 13-19, 1917, Cornell University Bio- 

 logical Expedition); Globe, & ("Vicinity of Globe," Aug. 4-5, 1937, A. B. 

 Klots); Superior, cf (Boyce Thompson Arboretum, Aug. 1, 1937, A. B. Klots); 

 Tucson, 3 d^cf (July 22, 1917, collector unknown), 3 cf c?, 9 (July 30, 1937, 

 A. B. Klots). 



