of the Yirginian Coast, 57 
other. The first two or three are a little shorter than those 
following them. They exist on 50 to 55 segments, the 
last two or three having about the same length as the first. 
After the first few segments they entirely cover the back. 
The anterior dorsal setse form a fascicle just in front of 
the dorsal cirrus, they are very long, (f. 131), regularly 
acuminate. In each bundle there are two or three in the 
upper part double the length of the one figured. Back of 
the branchiated segments, there are only four to eight in 
each bundle, which are a little shorter and more delicate 
than the anterior setse. 
Ventral setae (f. 132, a, b.), arranged in three transverse 
series, numerous, inner third or half of uniform width, then 
suddenly acuminate, capillary termination very long and 
delicate. In the upper part of each ramus are a few setae 
double the length of those figured; back of the branchiae 
they form two fan-like series. 
On the anterior branchiated segments, the dorsal and 
ventral surfaces of the body are very slightly convex. Their 
convexity progressively increases (f 129) backwards; the 
sides are rounded (f. 128). On the non-branchiated seg- 
ments, the lateral and ventral surfaces are regularly rounded, 
but there is a sudden contraction of the dorsum just above 
the dorsal rami (f. 130). Posterior segments not found. 
A fragment 32°"" in length had 170 segments, and was 
2mm ^j^ diameter. 
Color : the head is white ; first 30-40 segments bright 
red, passing into white, which further back passes into a 
green. Anterior dorsal setae, amber-yellow ; anterior ven- 
tral, brownish-yellow ; all setae back of branchiae gleaming 
white. ♦ 
Rare ; low water, mud. 
