Female.  Body with anterior truncate and posterior arcuate-cylindrical temini.  Lip region set off by depression with well-developed lips.  Buccal cavity strong-walled, striated, with massive dorsal tooth
projecting forward in anterior portion and with conspicuous posterior refractive ring.  Dorsal tooth opposed by numerous denticles arranged in seven transverse rows and by two large subventral teeth at posterior third of cavity.  Small amphid apertures opposite base of dorsal tooth.  Typical esophagus with nerve ring and excretory pore located at upper fourth; terminated by nontuberculate valve.  Didelphic with reflexed ovaries.  Pre- and post-vulval papillae ( one or more each) conspicuous; sclerotized pieces in vagina triangular.  Tail arcuate with elongate-conoid terminus, bearing three pairs of caudal pores (two ventral, one dorsal).  Three caudal glands in tandem emptying through terminal spinneret.

Male.  Similar to female in details of head, buccal cavity, and esophagus.  Posterior region with twelve supplements not including an adanal pair and two partly developed just anterior to the others.  Spicule broad and arcuate with bifurcate terminus; gubernaculum crescent-shaped with a reinforced keel; accessory pieces with bifurcate termini.  Tail arcuate with elongate digitate terminus and with three caudal glands in tandem emptying through terminal spinneret.  Tail region with four pairs of caudal pores (one pair dorsal and three pairs ventral).

Habitat.  High river bank about the roots of red alder and grass.
Oregon distributuion.  Along the Luckiamute River near Hoskins, Oregon.

(Description- Jensen and Mulvey, 1968)