of th£ Virginian Coast. 47 
Spioch^topterus oculatus n. sp. 
PL. VIII, PIGS. 98-102. 
Anterior region composed of the buccal segment and 
nine setigerous segments. Middle region, 20-23 segments. 
Posterior region, segments numerous, number variable. 
Head (f. 98), sunk in buccal segment and prolonged 
backward between the bases of the tentacles. The anterior 
part is trapezoidal, a little wider behind than in front; the 
posterior narrow part has slightly concave lateral and 
posterior margins, giving rounded, projecting, posterior 
angles. The greatest width of the head is a trifle less 
than its length ; it is slightly convex. In front it is trun- 
cated, or bent directly downward, its front face being 
somewhat triangular, bluntly rounded at the apex, below. 
Buccal segment, forms the anterior part of the bodj^, 
projecting a little in front of the head ; truncate in front, 
anterior margin thick, rounded ; lower and lateral surfaces 
convex; anterior truncated face concave. 
Tentacles, have the usual origin and structure, length 
20-25'"'". • 
Eyes two, lateral, just in front of the bases of the ten- 
tacles, elliptical, directed obliquely toward the middle line 
of the head, black. 
Anterior region. The feet are flattened, fleshy lobes, 
thick at base, running out to a thin edge ; they are dor- 
sal, transverse, directed upward and a little outward. The 
setae arise from the front face of the feet, are long inter- 
nally, growing progressively shorter externally. The outer 
setfe do not project beyond the foot. The setge also change 
their form from within outward, as shown in f. 101, a, b, 
c, d. The peculiar broad seta of the 4th setig. segment is 
slightly convex, has regular transverse markings, widens 
near the end. The expanded portion is thickened along 
an irregular line which divides it into two nearly equal 
