Fig. 1. Kincaidiana hexatheca Altman, 1936 from various sites. A–B in On Kincaidiana Altman, 1936 and Guestphalinus Michaelsen, 1933 (Annelida, Clitellata, Lumbriculidae), with the descriptions of three new species

Fig. 1. Kincaidiana hexatheca Altman, 1936 from various sites. A–B. Complete worms, ventral view of anterior segments, from McKenzie River, OR (A), and from Big Creek, OR (B). C–M. Representative (mostly anterior) chaetae from different populations (ordered approximately north-south); dorsal chaetae with tips upward, ventrals with tips down. C. Hoh River, WA. D. Pool at Bogachiel River, WA. E. Salmon Creek watershed, WA, anterior dorsal pair. F–G. Two specimens from Big Creek, OR; tip of one dorsal chaeta with keel folded over. H. Rogue River, OR. I. From a Darlingtonia bog, O'Brien, OR. J–K. Two specimens from spring near Mule Creek, OR; K is from a smaller specimen, with simple-pointed chaetae. L. Illinois River, OR; older chaetae simple-pointed (worn?), replacements bifid. M. Inglenook Fen, CA. Scale bars: A–B = 2 mm; C–M = 200 Mm.