152 Rowland M. Shelley 



Coxae without projections; prefemora with broadly rounded lobes on 

 outer surface, becoming smaller and less pronounced caudad; tarsal 

 claws sublinear. Hypoproct broadly rounded, paraprocts with margins 

 strongly thickened. 



Gonopodal aperture very broad, subtrapezoidal, extending caudad 

 between 9th legs and overhanging caudal margin of segment, with 

 strong shelf in caudal extension, extending anteriad nearly to anterior 

 margin of prozonum, latter with only thin sclerotized strip along anterior 

 margin to maintain structural integrity, 2.4-mm wide and 2.1-mm 

 long at midpoint, without indentations, sides elevated slightly above 

 metazonal surface, inner margin continuing smoothly around bases of 

 coxae, outer margin continuing into strong elevations along caudolateral 

 and caudal margins, latter strongly thickened and slightly flared. Gono- 

 pods in situ (Fig. 28, not this specimen) with telopodites extending 

 anteriad from aperture in parallel arrangement, overhanging 6th ster- 

 num. Gonopod structure as follows (Figs. 29-31): Coxa relatively 

 large, with 2-5 macrosetae above cannula, connected to opposite member 

 by narrow sternal band, latter with two moderate lobes subtending 

 coxae. Prefemur relatively long and broad, expanding slightly distad, 

 with large, laminate prefemoral process arising distad from anterior 

 surface, expanded basally into broad, cupulate flange with strong spur 

 on medial margin, several minute teeth in indentation on distal margin, 

 and short, irregularly serrate projection laterally, stem of prefemoral 

 process curving slightly then bending abruptly dorsad and expanding 

 into second medial and a lateral flanges, medial flange widest basally 

 and curving dorsad with minute marginal teeth and strong distal spine, 

 lateral flange broadly rounded basally, extending distad into broad 

 ledge overhanging tip, ledge with numerous short hairs, overhanging 

 denser hairs on stem of prefemoral process, latter narrowing greatly 

 distal to bases of flanges then expanding greatly on inner surface, 

 inner margin hirsute and becoming progressively more so distad, expanding 

 apically into subacuminate tip at inner distal corner, directed dorsad, 

 apical margin broadly indented. Acropodite arising on caudomedial 

 side of premur, demarcated by strong constriction, bending abruptly 

 anteriad and continuing sublinearly parallel to stem of prefemoral 

 process, curving broadly dorsad distally and narrowing to acuminate 

 tip, overall length about 3/4 that of prefemoral process. 



Female from Pepin County, Wisconsin — Length 27.4 mm, 

 maximum width 4.4 mm, W/L ratio 16.1%, D/W ratio 84.1%. Agreeing 

 closely with males in somatic details except paranota more strongly 

 declined, creating appearance of more highly arched body. Cyphopods 

 in situ with valves oriented transversely in aperture, common surface 



