REPORT ON THE ANNELIDA. 
361 
figure. These bifid bristles project much further from the surface than in Scalihregma} 
The long simple bristles, again, are largely developed. 
An evident distinction from Theel’s Eumenia longisetosa is the arrangement of the 
papillae on the dorsum, which in the new species appear to cover larger and somewhat 
rectangular areas (parallelograms), though the softened condition of the examples 
renders definition rather doubtful. It is to be recollected, however, that the 
characteristic papillae are not obliterated in the softened Scalibregma, and therefore it 
is well to note the foregoing j)oint. 
On the ventral surface a series of markings (PI. XLIV. fig. 2), somewhat hexagonal 
in shape, occurs along the centre, and these are joined by lines to the opaque whitish 
spaces between the bristle-bundles of the feet, thus producing a regular pattern. The 
dorsum anteriorly is irregularly reticulated by transverse rugae and longitudinal con- 
nections ; indeed, one of the specimens presented the aspect, dorsally, of Scalibregma 
without the branchiae. 
The specimens are too soft for satisfactory results after transverse section. 
Family SpHAiRODORiDiE. 
The Sphaerodoridae are not included in Grube’s “ Gazelle ” collection, nor in that from 
the Philippines. Schmarda gives a single doubtful form from Jamaica. 
The very great depth at which the present representative was procured is interesting. 
The common species {E'phesia gracilis), however, occurred in the “ Porcupine ” at a depth 
of 664 fathoms, and again at 417 fathoms in the Norske Nordhavs-Expedition. From 
the latter also a new species reached 1081 fathoms. 
Ephesia, H. Kathke. 
Ephesia antarctica, n. sp. (PI. XLIV. fig. 5 ; PI. XXIIa. figs. 22, 23). 
Habitat. — Several examples were trawled at Station 156 (near the Antarctic Circle), 
February 26, 1874; lat. 62° 26' S., long. 95° 44' E. ; depth, 1975 fathoms; surface 
temperature, 33°'0 ; sea-bottom, Dmtom ooze. 
A species which measures about 55 mm., with a diameter at its widest part of 
nearly 3 mm. 
The body is elongated and slightly fusiform in shape, diminishing a little anteriorly 
and much more posteriorly. The segments are very numerous. The head (PI. XLIV. 
fig. 5) is bluntly conical, and has at each side two short and somewhat slender tentacles. 
1 H. Theel in liis Annel. des. Mers de la N.-Zeinble now figures (pi. iii. fig. 47) the spikes in the fork of these 
bristles ; but he omits to add that in the proof these were absent. 
(ZOOL. CHALIi. EXP.— PART XXXIV. 188.5.) 
LI 46 
