REPORT ON THE ANNELIDA. 
•277 
trificl, and the same remarks apply as in the foregoing case when compared with Prof. 
Ehlers’ figure of Eunice vittata, and the actual specimen from Guernsey. 
In transverse section this very much resembles the foregoing, the only difference being 
the somewhat narrower and deeper nerve-area, a condition probably connected with the 
state of the preparation. 
Eunice circohranchiata, n. sp. (PI. XXXVIII. figs. 9, 10, 11 ; PI. XIXa. figs 21-24). 
Habitat . — Found between tide-marks at Bermuda in June 1873. 
The fragment is about 30 mm. in length and about 4 '5 mm. in breadth. Unfortu- 
nately it appears to have been dried. 
So far as the specimen shows, the head has comparatively short tentacular processes, 
which also appear to be slightly articulated. The buccal segment is large, with a much 
produced lobe on each side. The tentacular cirrus is short, scarcely stretching forward 
to the middle of the segment. 
The maxillae (PI. XXXVIII. fig. 9) are strongly curved, and tinted of a dull madder- 
brown hue. The left great dental plate has five prominent, sharp teeth. There are 
also five on the right (the fifth beiug small). They diminish in size from before back- 
ward, and the brownish chitin is tipped wdth a translucent margin on the free edge of 
each tooth. The left lateral paired plate has only a single tooth. The unpaired plate 
of the same side has seven teeth. The right lateral plate has eight teeth. The mandibles 
(PI. XXXVIII. fig. 10) show a broad irregular, slightly produced margin, and the roots 
are comparatively broad. 
The branchiae commence about the twenty-third segment, in the form of a single long 
process, springing from the base of each cirrus dorsally. The organs increase in length 
posteriorly, two long processes occurring on the fiftieth and sixtieth feet (PI. XXXVIII. 
fig. 11). 
The foot bears dorsally a moderately elongated cirrus, which, in the tenth foot, does 
not reach the tip of the superior (simple or winged bristles), though it is somewhat 
longer posteriorly. The base of the process is supported by a series of simple 
bristles, which represent the dorsal tuft. The upper bristles (PL XIXa. fig. 21) are long, 
straight, and stout, the tip being somewhat short, with a wing at each side. Short 
brush-like bristles accompany them. Then follow a series of jointed bristles (PL XIXa. 
figs. 22 and 23, the latter being considerably compressed). The tip has a strong fang, 
with a smaller hook above it, both being guarded by a wing. A single dark spine occurs 
in each foot anteriorly, but tow^ard the twentieth foot a dark brownish hook appears 
(PL XIXa. fig. 24). The terminal hook of the latter is well marked, and the fang 
beneath large and strong. The short wing guards both points. 
