The Chonaphini 173 



unmodified, with only shallow transverse grooves originating between 

 leg pairs. Coxae of legs 3-7 moderately enlarged ventrad, swelling of 

 3rd coxae angular on anterior surface; prefemora without trace of 

 spines. 



Gonpodal aperture generally ovoid, with caudal extension between 

 9th legs. Gonopods in situ with telopodites in parallel arrangement. 

 Coxae with macrosetae fields in two general tufts, attached to each 

 other by narrow sternal band, latter with central lobe. Telopodal elements 

 not parallel; prefemur long and narrow; prefemoral process arising 

 near midlength of prefemur, narrowly blade-like, apically acuminate, 

 bisinuately curved, without projections. Acropodite arising distad from 

 prefemur, long and blade-like, curving in form of narrow arc, acuminate. 

 Prostatic groove arising in pit in prefemur, running along medial face 

 of prefemur, angling onto lateral surface of acropodite and continuing 

 to terminal opening. 



Females unknown. 



Distribution — Whitman County, Washington, to Benewah and 

 Latah counties, Idaho. 



Species — One. 



Remarks — Among the three genera with long prefemoral processes, 

 Metaxycheir has the simplest gonopod, consisting of an unmodified 

 blade-like prefemoral process and a blade-like acropodite. I show 

 them as an unresolved trichotomy in figure 72, but Metaxycheir may 

 be the sister lineage to Tubaphe + Montaphe. 



Metaxycheir prolata Buckett and Gardner 



Figs. 50-53a 



Metaxycheir prolata Buckett and Gardner, 1969:67-70, figs. 1-6. Kevan, 

 1983:2968. 



Type specimen — Male holotype and 2 juvenile paratypes (UCD) 

 collected by R. L. Westcott, 16 May 1965, 7 mi (11.2 km) NE Moscow, 

 Latah County, Idaho. The vial label and citation in Buckett and Gardner 

 (1969) incorrectly state Nez Perce County, but this site is actually in 

 Latah County. 



Diagnosis — With the characters of the genus. 



Color in life — Unknown; the specimens that I collected in Whitman 

 County, Washington, were freshly molted and lacked pigmentation. 



Male from Benewah County, Idaho — The following notes on somatic 

 features supplement the complete characterization of the holotype by 

 Buckett and Gardner (1969); for consistency in terminology with previous 

 accounts, gonopodal features are described in detail. 



