652 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ii4 



irregularly narrowing to narrow basal extremity, apical portion ab- 

 ruptly narrowed dorsad at point of fusion with base of cucullus. 

 Cucullus only partially set off from costa and sacculus by areas of 

 reduced sclerotization, sparsely punctate and setose about margins 

 (especially entad), base broad, dorsal margin sublinear, approximate 

 apical half slightly to markedly expanded ventrad; apex very broad, 

 broadly and evenly rounded dorsad, bluntly to narrowly rounded 

 ventrad. 



Transtilla with arm glabrous, well sclerotized, short, approximately 

 one-fifth as long as harpe, basal two-thirds diverging from and apical 

 third converging toward margin of costa, terminating subacutely con- 

 siderably caudad of basal extremity of harpe. 



Uncus obscurely bifid, subtriangular, similar to that of griseus. 

 Dorsal aspect: base large, glabrous, mesal portion of cephalic margin 

 fusing with tegumen ; lateral margins of base set off from tegunien by 

 irregular areas of reduced sclerotization, heavily sclerotized, sparsely 

 punctate and setose, converging caudad into furcae; angle of bifurca- 

 tion entirely obscured ; furcae approximate, appearing as single process 

 with median longitudinal suture (especially in dried or untreated 

 specimens), elongate, narrow, heavily sclerotized, directed caudad and 

 slightly ventrad, lateral margins sparsely punctate and setose, apices 

 acute. 



Gnathos fused, large and broad, curving ventrocaudad, mesal por- 

 tion of basal half very weakly sclerotized; approximate apical half 

 fau^ly well sclerotized, considerably thickened dorsoventrad, heavily 

 scobinate dorsad, densely clothed ventrad with minute seta-like 

 processes; lateral margins heavily sclerotized, converging distad to 

 very broadly and evenly rounded apex. 



Anellus large, membranous, unarmed, juxta absent. 



Aedeagus rather slender, length medium, approximately sLx-sevenths 

 as long as harpe, cylindrical, asymmetrical, glabrous, sinuate in dorsal 

 and ventral aspects, approxunate apical fourth curving somewhat 

 ventrad in lateral aspect; base slightly expanded laterad, emarginate 

 ventrad, opening dorsad; central portion somewhat narrowed, gTad- 

 ually expanding again toward apex; approximate apical third opening 

 broadly and irregularly and consisting simply of sclerotized, dextral 

 strip terminating distad in small, well sclerotized, acute, spinelike 

 process du-ected sinistrad. 



Vesica fairly large, membranous, unarmed. 



Type. — Holotype cf and allotype 9 (type no. 61447) in the U.S. 

 National Museum. 



Paratypes (13 cfcf, 2 99). — California Academy of Sciences 

 (5 cfcf, 1 9); Denison University (1 cf); U.S. National Museum 

 (7 cfcf, 1 9). 



