PRAIGERIA. 425 
ment, which has a belt of opaque white. The palpi are long and tapered, exceeding the 
tentacular cirri in length. Hyes 4, anterior pair wider apart and slightly larger than the 
posterior. The proboscis in extrusion is a firm, cylindrical organ, fully a centimetre in 
length, with a transverse slit at the tip guarded by about a dozen papillee on each margin, 
most of them with pigmented patches. Two slightly curved horny jaws occur above and 
below, and when locked they are alternate. The basal region of the organ in extrusion 1s 
marked dorsally by two brown bands. 
The body (Plate CXXXIV, fig. 1) is elongate (84 inches), and with upwards of 200 
segments, tapered a little anteriorly, and more distinctly posteriorly, where it terminates 
in an anus with two short cirri. In life the colour is a brown of varying degrees of intensity 
with a tendency to a purplish hue. The intervals between the segments have a transverse 
bar of dark brown, and the cirrus-bearing feet have a diffuse patch of the same pigment, 
scarcely perceptible on those carrying elytra. The ventral surface is nearly colourless except 
for a median longitudinal line of red. 
The scales (Plate CX XXIV, fig. 1c) are sub-circular, or in a few reniform ; surface and 
margin smooth. Hach has a dark brown patch immediately behind the scar and spreading 
inward toward the posterior border, near which is a curved streak of opaque white. Arbor- 
escent nerve-twigs are spread over the entire elytron. One example, 84 inches long, had 
67 elytra and 199 segments. 
In the first foot the dorsal division is represented by a papilla to which the spine goes. 
The ventral division carries thirty or more bristles, which have slender shafts and elongated 
spinous tips, with, in some, traces of a cleft. The spinous border is directed ventrally. The 
ventral cirrus is long. In the typical foot (Plate CX XXIV, fig. 1@) the dorsal division may 
carry four or five long, slender and smooth bristles (Plate CX XXIV, fig. If). In the ventral 
division are three groups of bristles—an upper, with long, slender shafts and elongate spinous 
tips, a median of numerous stout bristles, with shorter tips (Plate CX XXIV, fig. 1), and a 
ventral series with still shorter tips. All the bristles, with the exception of the first two 
feet, are bifid. The segmental papillx are very prominent in the posterior part of the body 
and the segmental organs are indicated in Plate CXXXIV, fig. 1. The dorsal cirri resemble 
the tentacular cirri and extend nearly to the tips of the bristles. 
It is an interesting fact in the history of this genus that one species from the Antarctic 
Seas resides in a tube formed by the branches of a coral, the tough nature of the reticulated 
walls of the tube thus making an efficient protection for the elongated annelid. The twigs 
of the coral seem to adapt themselves to the tunnel of the worm. 
Famity Pistonipa, Grube. 
Genus Pramamria, Southern, 1914. 
Pisionidee with much reduced head ; ventral cirrus of first setigerous segment elongate 
and functioning as a tentacular cirrus; dorsal cirrus of second setigerous segment globular, 
as on the following segments; genital papille absent; anterior feet with one, posterior 
feet with two, simple bristles. 
