JOHNSON: POLYCHAETA OF PUGET SOUND REGION. 411 
lected by J. K. Lord at Esquimalt and described under the name 
Glycera corrugata by Baird (’63) is probably identical with G. 
rugosa, but the description is too meager to admit of positive deter¬ 
mination. Many of the larger specimens are females with ripe or 
nearly ripe ova; but I have seen no specimen which has undergone 
the atrophy of the proboscis incidental to sexual maturity mentioned 
by Arwidsson (’98, p. 6). 
As the Glyceridae are destitute of a vascular system, the gills are 
merely reversible pouches of the body-wall, into which the caelo- 
mic fluid passes. Reproductive cells also enter these thin-walled 
pouches. 
26. Glycera nana sp. nov. PI. 10, figs. 103, 103a. 
Form short, thick, somites comparatively few (about 140 in one 
specimen); diameter nearly uniform for greater portion of length; 
somites two-ringed; the posterior ring slightly raised above the level. 
Prostomium conical, ten-ringed, four minute tentacles at tip. Pro¬ 
boscis short, club-shaped, beset with conical papillae. Jaw-appen¬ 
dage as shown in Fig. 103a. 
Parapodia (Fig. 103) rather slender, anterior lobes two, the 
ventral one the longer, both conical; posterior lobe single, rounded; 
ventral cirrus ( v . c.) similar in shape to upper anterior lobe; dorsal 
cirrus a rounded tubercle placed high above the foot on the side of 
body; no gills. 
Setae elongate, of the usual two forms, capillary dorsal, and com¬ 
pound ventral. 
Length of larger specimen, 64 mm.; greatest transverse diameter, 
6 mm.; without j:>arapodia, 4 mm. 
The species is present in the Columbia collection and also in 
Miss Robertson’s; she obtained it at Port Orchard in July, 1898. 
The exact locality is not recorded for the other specimen. In both 
examples the posterior portion is regenerating, so it is impossible 
to give accurately the normal number of somites. It probably lies 
between 180 and 200. 
27. Hemipodia borealis sp. nov. PI. 10, figs. 104, 104a. 
Form terete, moderately long and slender, of nearly uniform 
thickness for the greater portion of the length, but tapered poste¬ 
riorly; somites three-ringed, 126 in number; two minute anal cirri. 
Prostomium with conical, ringed process, tipped with four (?) ten¬ 
tacles. Proboscis beset with minute, ovate papillae. Jaws with 
notch near base; jaw-appendage (Fig. 104a) a simple rod. 
