144 Rowland M. Shelley 



possible. Agreeing closely with males in somatic features, except paranota 

 more strongly declined, creating appearance of more highly arched 

 body. Valves (Fig. 20) relatively small, corners extending slightly ventrad 

 for equal distances, subtending deep central depression, with dense 

 hair patches arising from medial and lateral projections. Receptacle 

 relatively small, flat, and inconspicuous, with long hairs arising from 

 ventral margin, extending slightly beyond anterior and caudal surfaces 

 of valves, but not cupped around latter. 



Distribution — Known only from the type locality. 



Remarks — This intriguing species exhibits several distinct somatic 

 features. As shown by the lower W/L ratio, C. evexa is longer and 

 narrower than either C. armata or remissa, a distinction that is made 

 even more dramatic in side by side comparisons because of its smaller, 

 more rounded paranota. The gonopodal aperture does not extend caudad 

 between the 9th legs, in marked contrast to the conditions in both C. 

 armata and remissa, and the gonopods are oriented slightly differently 

 in situ. In C. evexa, the acropodite arises almost centrally on the 

 caudal side, as opposed to a sublateral origin in the other species. 

 Consequently, the telopodite is rotated slightly counter-clockwise and 

 is situated differently on the coxa. Occurring in the Coast Range of 

 southwestern Oregon, C. evexa is well isolated from the main generic 

 distribution, as the most proximate locality for C. armata, in Benton 

 County, is some 144 mi (230 km) to the north-northeast. 



Chonaphe schizoterminalis, new species 

 Figs. 21-26 



Type specimens — Male holotype, one female paratype, and an 

 additional segment of a male with gonopods (MCZ) collected by R. 

 V. Chamberlin on an unknown date at Springdale, Stevens County, 

 Washington. 



Diagnosis — Dorsal surface of prefemoral process without thickened 

 projection distal to shelf, with angular, laminate flap overlapping shield; 

 apical margin gently curved and continuing downward to acuminate 

 termination on medial side, strongly divided with lateral side extending 

 inward to subacuminate tip as dactyliform projection; shield connecting 

 with inturned lateral margin. 



Color in life — Unknown, specimens completely blanched by 

 preservative. 



Holotype — Length 16.1 mm, maximum width 2.9 mm, W/L ratio 

 18.0%, D/W ratio 82.8%. 



Somatic features agree with those of C. armata, with the following 



