JOHNSON: POLYCHAETA OF PUGET SOUND REGION. 391 
mottled, iron-gray elytra. One of the largest specimens obtained at 
Alki Point has numerous undeveloped ova attached to the dorsal 
setae and in the intersegmental furrows. These bunches of ova are 
only partially covered by the elytra. 
T. Harmothoe iphionelloides sp. nov. PI. 1, figs. 2-7. 
Form short, broad, and flattened; width, including elytra, two 
fifths of length; dorsum and prostomium completely covered by 
elytra, which overlap extensively; somites, 36; elytra, 15 pairs, 
borne on somites 2, 4, 5, 7 ... . 23, 26, 29, 32. 
Prostomium (Fig. 2) broad, transverse diameter exceeding the 
longitudinal; distinctly bilobed with median sulcus ; the lobes ovoid, 
rounded in front. Palpi stout, fusiform, minutely papillated, trans¬ 
versely ringed with grooves, acuminate. Tentacle with immense 
basal joint, nearly one half its length; terminal segment slightly 
papillate, subulate, unpigmented. Antennae with basal joints about 
as long as tentacle, slightly bulbous near tip, with subterminal dark 
band; slightly papillated. Eyes large, black, the posterior pair 
smaller and nearer together than the anterior pair. 
Peristomial cirri (Fig. 2) much stouter than antennae, and about 
twice as long; with filiform papillae near tips; basal joints very 
long; subterminal bulbous enlargement, with dark pigment-zone. 
Elytra thick, with large, rough, irregularly polygonal, flattened 
tubercles (Fig. 3), forming a pattern like alligator skin; tubercles 
increase in size from the concave (protected) side of elytron towards 
the convex and exposed portion ; elytra become larger towards 
middle of series, and diminish again towards posterior end ; ciliate 
on outer margin; except first pair, all elytra more or less strongly 
reniform, the concave edge of each embracing the preceding elytro- 
phore. 
Parapodia (Fig. 4) rather long, thick, biramous; each ramus 
ending in a finger-like prolongation, into which the acicula extends. 
Dorsal cirrus extends beyond the setae ; basal joint nearly one fifth 
its length with pin-head-like papillae towards the incrassated tip. 
Ventral cirrus subulate, slightly papillate. Ventral setae straw- 
colored, hardly extending beyond the longest dorsal (Fig. below 
the dorsal cirrus), and only slightly stouter than the uppermost dor¬ 
sal {cf. Figs. 5 and 6); slightly hooked at tip, with 12-20 “frills” 
of usual form. Dorsal setae white, forming a graduated series from 
uppermost stout, short, strongly-curved ones (Figs. 4 and 6) to the 
lower elongated slender ones (Figs. 7 a,b). The fine serrations ex¬ 
tend nearly one half the length of seta, whether it be long or short. 
