60 Annelida Ghcetopoda 
The second segment bears branchise and laterally an 
acutely conical process with a flattened triangular base ; 
a bundle of setae, similar to those of the first segment, 
arises from the lower margin of this process near its base. 
There are no other setse on this segment. Accordingly, 
the first two segments are uniramous having only the 
ventral rami and setae. The pedal ramus of the second 
segment is very close to the setigerous lobe of the first, 
being on the anterolateral margin of its own segment. 
Without careful examination it would seem that both 
rami belonged to the first segment. 
The dorsal setas of the third segment (f. 136) are smaller, 
but do not dift'er otherwise from those of the fourth and 
fifth (f. 137). Those following the fifth segment have 
four sharp teeth increasing progressively in length (f. 138). 
Branchise, about twenty pairs ; sixth or seventh largest, 
growing smaller gradually, the last being quite short. 
Length of anterior branchiae a little more than the width 
of the body. 
Color : opercular lobes white with dark brown specks ; 
first three or four segments black laterally sometimes 
ventrally ; body generally white, often with a greenish 
tinge : branchise white or red with green centre : caudal 
appendage green : feet generally white, with sometimes 
the outer border of the posterior dorsal rami black. In 
a well marked color variety, the first four segments were 
entirely black; body green with brown spots; middle 
third, ventral surface, dark brownish-red ; feet light green 
at base, passing into dark brown externally. 
Length, from 8 to 18"™. 
The tubes of this species were numerous on shells, etc., 
dredged from four to twelve fathoms. 
