The Chonaphini 169 



membrane only, without trace of sternal band. Telopodal elements 

 diverging, not parallel; prefemur long and narrow; prefemoral process 

 arising near midlength of prefemur, long, narrow, and subacicular, 

 gently curved, extending beyond level of distal extremity of acropodal 

 curvature, with 3-4 minute, distal barbules. Acropodite arising distad 

 on prefemur, long and narrow, blade-like to subacicular, demarcated 

 from prefemur by narrow constriction, configuration a broad, open 

 loop curving over prefemoral process to acuminate tip. Prostatic groove 

 arising in pit on prefemur, angling to lateral side of prefemur and 

 extending onto base of acropodite, continuing to terminal opening. 



Cyphopod aperture relatively narrow, encircling 2nd legs, sides 

 and caudal margin elevated above metazonal surface. Cyphopods in 

 situ with valves oriented transversely, common surface visible in aper- 

 ture. Valves relatively large, subequal, and lightly hirsute, medial 

 corners extending strongly ventrad, subtending deep central cavity. 

 Receptable moderate-size, subtriangular, located below medial corners 

 of valves, not cupped around latter, with numerous long hairs. Operculum 

 large, located lateral to valves, with numerous long hairs. 



Distribution — Along the Pacific Coast on the southwestern periphery 

 of Vancouver Island, British Columbia, and on the western and south- 

 western slopes of the Olympic Mountains, Washington. 



Species — One. 



Tubaphe levii Causey 



Figs. 45-49 



Tubaphe levii Causey, 1954^:223, figs. 2-4. Chamberlin and Hoffman, 



1958:52. Kevan, 1983:2968. 

 Metaxycheir pacifica Shelley, 1990:2311-2313, figs. 1-5. 



Type specimens — Male holotype (AMNH) and 2 female paratypes 

 (FSCA) collected by H. W. and L. L. Levi, 12 July 1951, at Graves 

 Creek Campground, Olympic National Park, Jefferson County, Wash- 

 ington. One gonopod of the holotype is lost and the other is broken. 



Diagnosis — With the characters of the genus, as illustrated in 

 figures 45-49. 



Description — Recently collected males from Jefferson County, 

 Washington, conform closely to the detailed anatomical account by 

 Shelley (1990) of the synonym, M. pacifica; the following supplemental 

 observations are the only significant additions. 



Facial setae: epicranial generally not detected and presumed absent; 

 one male with one seta per side. Subantennal 1-1 and genal 2-2 on 

 most males. 



