ASCLEROCHEILUS. 469 
FAMILY OPHELIID. 
ARMANDIA FLAGELLIFERA, Southern, 1914. Plate CXXXVII, figs. 8—8b—anterior and 
posterior ends. 
Specific Characters—The cephalic region tapers to a slender, pointed tip, but is not 
clavate. Nuchal organ a rounded pit on each side. Proboscis with thirteen slender papille. 
Body typical, about 12 mm. long, rounded dorsally, grooved ventrally, and tapered at each 
end. Setigerous segments thirty-three. Lateral eyes sixteen, from the fourth to the 
nineteenth. Anal funnel a flattened tube, ringed externally and opening dorsally, the 
aperture being four-lobed, each lobe with a fusiform papilla. A slender cirrus springs 
ventrally from the base in front of the anal funnel. 
SYNONYMS. 
1914. Armandia flagellifera, Southern. Proc. Roy. Irish. Acad., vol. xxxi, No. 47, p. 182, pl. xiv, 
figs. 31 a—p. 
1922. a Bt McIntosh. Ann. Nat. Hist., ser. 9, vol. ix, p. 13. 
Habitat.—Captured in a tow-net at night near the entrance to Ballynakill Harbour, 
and dredged in 11 fathoms in mud, Galway Bay (Southern). The cephalic region (Plate 
CXXXVII, figs. 8 and 8a) tapers to a slender point, which does not show a clavate tip. The 
extruded proboscis is furnished with thirteen slender papille (Southern). Nuchal organ 
conspicuous on each side in front of the first bristle-bundle. The body is fully 12 mm. long, 
tapered at both ends, but nearly of uniform diameter throughout the rest of its extent. It 
is rounded dorsally, deeply grooved ventrally from the snout to the anal funnel. Setigerous 
segments thirty-three, each with three rings, and each ring biannulate (Southern). The 
dorsal cirri are filiform and fairly long. An eye-speck is situated behind each foot from the 
fourth to the nineteenth, and each consists of small spheres of pigment or a single mass 
(Southern). In lateral view the body abruptly narrows to the anal funnel, which is a 
flattened tube with a dorsal opening posteriorly. The margin of the funnel is papillose 
posteriorly, Southern describing the opening as projecting in four lobes, each bearing a 
fusiform papilla. A long slender cirrus, nearly twice as long as the anal funnel, arises from 
the ventral base in front of the funnel. 
The feet occupy the upper and outer border of the ridges made by the ventral longi- 
tudinal muscles. The setigerous lobe is rounded, and bears superiorly the long, subulate 
cirrus, in which at least one blood-vessel is present, then a tuft of simple capillary bristles ; 
ventrally a sumilar tuft of bristles and a small, somewhat clavate ventral cirrus (Southern). 
FAMILY SCALIBREGMIDA. 
Genus ASCLEROCHEILUS, Ashworth, 1901. 
Pigment-masses on the head absent. Curved acicular bristles finer than those of Sclero- 
cheilus occur on the first three bristled segments. No ventral cirri. 
