412 PROCEEDINGS : BOSTON SOCIETY NATURAL HISTORY. 
Parapodia (Fig. 104), as invariably in this genus, with only the 
lower ramus, a single acicula, and no simple setae. The dorsal 
cirrus (d. c.) near the foot, ovate ; no gills. Parapoclia consisting of 
an anterior, elongated lobe and a posterior, short, rounded one. 
Length , 72 mm. ; transverse diameter, including parapodia, 3 mm. 
Only a single female specimen of this very interesting species oc¬ 
curs in the Puget Sound collections. It was gathered bv the Co- 
lumbia University Expedition —exact locality not known. It con¬ 
tains large eggs, and is evidently mature. 
The genus Hemipodia was established in 1865 by Quatrefages 
for the reception of a peculiar Glycerid from Chile, which he named 
II. roseus. The same year another species from the Straits of 
Magellan was described under the name II. patagonica by Kinberg 
(’65, p. 245). Until the present, no genuine species of Hemipodia 
has been added to the two original ones, although two species of 
Glvceridae — Hemipodia (?) magellanica M’Intosh (’85, p.349) 
and II. septentrional is Houle (’96, p. 452) —have been erroneously 
attributed to this genus (vide Arwidsson ’98, p. 28). 
Aeiciidae. 
28. Scoloplos elongata sp. nov. PI. 10, figs. 105-110. 
Form long and slender, somites short and very numerous (293 in 
one specimen); flattened anteriorly; broadest between 9th and 
17th somites; thence narrowing gradually to a uniform diameter 
which is kept about as far as the 200th somite, thence gradually and 
uniformly diminishing to the slightly expanded, hemispherical py- 
gidium. Dorsum plane, but apparently concave on account of the 
upward direction of the parapodia. Ventral aspect convex, flattest 
in the widened anterior region, where dorsal and ventral surfaces 
are nearly alike and the parapodia are laterally directed. 
P rostomium small, tipped by a conical, acutely-pointed palpode 
(Fig. 105, pp .); without eyes. 
Peristornium increasing rapidly in width towards the second 
somite, which is the first to bear setae. Pharynx eversible, with 
leaf-shaped lobes (Fig. 106). 
Parapodia at anterior end (Fig. 107) with dorsal and ventral 
setae, and simple branchiae. Setae closely serrated (Fig. 109). 
Parapodia back of the anterior region (Fig. 108) with larger, ciliated 
