324 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [618] 
SABELLA MICROPHTHALMA Verrill, sp. nov. (p. 323.) 
Body rather short and stout, narrowed slightly anteriorly, tapering rap- 
idly close to the posterior end, composed of about sixty segment, de- 
pressed, moderately convex above, flat below, especially when preserved 
in alcohol; anterior region composed of eight setigerous segments, hav- 
ing moderately long fascicles of setz ; posterior region composed of about 
fifty short segments, bearing very small fascicles of sete ; anal segment 
small, simple, with two very small ocelli-like spots; ventral shields of 
the anterior segments short, transversely narrow, oblong; median sulcus 
very distinct in the posterior region, dividing the ventral shields into 
two nearly rectangular parts, which are broader than long. Branchiz 
numerous and long, often half as long as the body, connected by a 
Slight web close to the base; the stalks smooth, with numerous minute 
ocelli, in two irregular rows; pinn# numerous, long and slender; tips 
of the branchi without pinnez. Collar broadly interrupted above, flar- 
ang and reflexed at the sides, with rounded upper angles, erect and sin- 
uous af the latero-ventral margins, reflexed below, forming two short, 
rounded lobes, separated by a narrow but deep central sinus, within 
which there is a short bilobed organ. Tentacles thin, lanceolate, acute, 
in preserved specimens not so long as the diameter of the body. The 
anterior segment is divided by a deep dorsal sulcus, which is not con- 
Spicuous on the succeeding segments. Color of body greenish yellow, 
‘dull olive-green, or greenish brown; branchie pale yellowish, greenish, 
or flesh-color, often with numerous transverse bands of lighter and 
darker green, which extend to the pinne, and sometimes blotched with 
brown; collar translucent, specked with flake-white; ocelli dark red- 
‘dish brown. Specimens, apparently belonging to this species, were taken 
from wood bored by Teredo, near New Haven. These had the body 
olive-green, specked with flake-white anteriorly, on the ventral side, 
especially on the first two segments; branchie mottled with greenish 
brown and white and specked with flake-white ; ocelli brown, numerous. 
Length, 30™™; diameter, 2.5™™ to 3™™. Preserved specimens are 
about 20™™ long, 2.5™™ broad. 
New Haven to Vineyard Sound; low-water mark to 5 fathoms. 
EUCHONE ELEGANS Verrill, sp. nov. Plate XVI, fig. 84. (p. 432). 
Body rounded, slender, gradually tapered backward; the anterior 
region, which forms about one-half of the entire length, consists 
of eight setigerous segments; these are biannulated and divided by 
a dorsal, longitudinal sulcus, and by a lateral sulcus on each side be- 
low the uncigerous lobes. The middle region consists of thirteen 
shorter biannulated segments, whicli bear small fascicles of sete on the 
lower rami; these are divided by a ventral sulcus, and also by the 
lateral ones. The caudal region consists of about ten very short ‘seg- 
ments ; all of which, except the last, bear small fascicles of sete. These 
Segments are margined bya rather broad membrane, wider and rounded 
