102 A. #. Verrill—Dredgings on the Coast of New England. 
Four Sipunculoids occurred, viz. : Phascolosoma cementariwm 
pe ); (s. p. x) P. tubicola V., abundant +P. borealis Kef. (?)*; 
d Chetoderma nitidulum ‘Lov. (?)3 the last named species 
was also dredged by me in pshecapant Bay, 30 fathoms, 
face with slender, shining spines, directed backward. 
One of the commonest species, both here and in 150 fathoms 
(s), was a new and beautiful species, which I have called Nothria 
opalinat in allusion to its brilliant opal-like iridescence. It is 
nearly allied to NW. conchylega, which also occurs with it, but is 
a more slender and depressed species, and in addition to many 
tee characters it differs remarkably in color, the latter being 
This species os hoe a and bene obtuse heme di cig? smooth tes 
both t 
is minutely wrin one cone en ye saa ed with nos nica slender 
papille, and is aatale specked with dirty y: ellowish brown; the retractile por- 
tion is more distinctly graunlated anteriorly. The ram He are rather numerous, 
roomed wate simple. Mr. Whiteaves has also dredged it in the Gulf of St. Lawrence 
“t ‘Nothria opalina, Sp. nov. 
ody 1 
idth throughout most of its le ; the sh terior sment much er pe 
ihe — Palpi infe 5 rather large, aaticchananels an tennz small, ovate, close 
m the front of head. central Cain very long and slen der, 
tapering sent, the baad! portion eee annulated and thickened for a agence” 
e distance, beyond ors the surface is smooth, with an occasional distant 
= lb o the central odd one is somewhat shorter and more slender than the 
two adjacent ones, which re mre to: ar. beyond the 10th segment; outer pair mee 
hi ° en’ 
nes. 
. ore pet vee Lateral a sppentages ~ - ret t” of the ae six mage 
and 6th pairs have essentially the same structure, but the ventral oo becomes 
— to the 2 where it is — than the stalk and near y equal vec 
the irrus, The succeeding feet are much shorter; the ventral cirrus is 
i inal ci rm | 
until it is less than one-fourth th the le ranchia. 
The setze of the anterior feet consist of Gesen: amis oer — ones. 
mixed with much stouter, blunt — mpound o farther are 
two fascicles of more slender acute sete, and in the = sali Trndles a tow long; 
stout, biden sahara ks, with a thin, ro unded, terminal expansi t 
Col 1, pale Ag white, but en very brilliantly iridescen 
with —. luster and colo 
Length, 2 
e body, while the dorsal cirrus at the same 7 becomes smaller athe oe 
ngth of 
; diame 
ar St. Goons Banks in ite eae 150 fathoms, common. 
