Polychaeta 7B 
The parapodia are rather short and subcylindrical, but a little compressed 
anteroposteriorly. The neuropodia rise somewhat at the distal end above and 
show the usual subvertical setigerous groove across the end and above. The 
notopodia are small elevations arising from the dorsum of the parapodia toward 
the anterior side and distad of a cylindrical, finger-like process into which the 
aciculum extends and the cirrophore. The notocirri are attached at the bases 
of the parapodia above. The notocirrophore is large, a little narrowed distad, 
and much exceeding the style in thickness. The latter is of moderate length, 
expands toward distal end, and terminates in a slender, abruptly set-off filament. 
Mesad of each cirrophore on the cirriferous segments is a subconical process 
in line with the elytrophores than which it is smaller. The neurocirri in general 
arise ventrally proximad of the middle, the position in the posterior region 
becoming more toward the caudal side. The cirrophores are proportionately 
very thick and distally truncate. The styles in general are abruptly narrower, 
short, and very thickly subfusiform or ovoid, with abruptly thinner, filiform 
tips short. (See Pl. I, fig. 2). The neurocirri of the first normal parapodia, 
however, are much longer, attaining or exceeding the end of the parapodia 
proper, and clavate in form proximad of the tip, being closely similar to the 
notocirri. 
The notopodial sete are present, though reduced to very few in going 
caudad. They are numerous on the first parapodia, on the second are fewer 
while on those of the posterior region they are reduced to only one or two or 
none. They are much shorter than the neuropodials. They are flat and curved, 
sword-shaped, incised or bidentate at the tip, and scaled along one side. (Pl. II, 
fig. 1.) The neuropodial sete, excepting those of the first parapodia, and some- 
times in part of one or a few following, distally with moderately hastate heads 
which are curved. (Pl. 2, fig. 3.) The neuropodial sete of the first parapodia 
are all bidentate at the tip and finely scaled along the convex edge of the head. 
(Pl. II, fig. 2.) In the second parapodia the supraacicular group of sete remain 
of this same character, though coarser and longer, while the subaciculars are 
still coarser, with heads more strongly curved, the tips entire, ‘and the edges 
smooth excepting for a few weak serrations. (See Pl. II, fig. 3.) Farther caudad 
both supraaciculars and subaciculars have the latter, essentially smooth, form 
with entire tips. The notopodials in the first parapodia are not thinner, 
though shorter, than the neuropodials but they are finer than the ordinary 
neuropodials farther caudad. 
The elytra thin though moderately tough. They are subcircular in outline 
and are attached midway between their centres and their ectal edges. Surface 
smooth, appearing wholly to lack tubercles and cilia. (Pl. I, figs. 3, 4.) While 
they overlap in the series along each side, those of the opposite sides do not 
overlap mesally, thus leaving a middorsal naked stripe. They occur upon 
somites II, IV, V, VII, IX, and similarly on alternate somites to XXIII; then 
on somites XXVI, XXVIII, XXIX, XXXI, XXXIII, XXXV, etc., about 
twenty-five or more pairs being present. 
Locatitizs.—Alaska: Grantley harbour: Teller. Station 20b-c. July 30, 
1913. Depth, 2-3 fathoms. Bottom, sandy. 
Alaska: Port Clarence bay. Station 20g. August 4,1913. Same depth, etc. 
This species much resembles S. fragilis (Baird), a form common on the 
Pacific coast farther south. It is a rather more slender form with coarser sete. 
The notopodials in general are much more numerous. The species may be 
distinguished at once by the sete of the second parapodia, fragilis lacking the 
special supraacicular group of apically bidentate neuropodials present in lia. 
Evarnella impar (Johnston). 
1839. Polynoe impar Jounston, Ann. Nat. Hist., 2, p. 436, pl. 22, f. 3-9. 
1840. Lepidonotus impar Orrstep, Annul. Dan. Consp., p. 13. 
——. Lepidonotus impar GruBe, Fam. Annel., p. 36. 
