REPORT ON THE ANNELIDA. 
439 
The pale contents of the alimentary canal presented numerous sand-grains, whitish 
globular bodies spinous all round, Diatoms, fragments of sponge-spicules, minute 
Foraminifera with a few larger Glohigerince, and an occasional fragment of a 
Radiolarian. 
Webster describes the living specimens as having green branchiae with a red centre 
aud narrow transverse white bands, whereas the tentacles are of a light flesh colour. The 
body is also flesh-coloured, sometimes tinged with green, and with numerous flake-white 
specks on the anterior dorsal surface. The posterior nine or ten segments are dark 
brown or black. There are eighteen anterior somites with setae, and fifty-three posterior. 
The first three setigerous segments have a narrow white band. 
Webster observes, “this species is certainly closely related to Sabellides {Melinna, 
Malmgren) cristata, but probably not the same.” His doubts will be somewhat allayed 
when it is mentioned that the Challenger species was discriminated as Melinna sondoreriana 
a year or two before the publication of his paper, and with the Norwegian and other 
European species in proximity. The figure of the ventral hook by Malmgren’s artist is 
more accurate than that of the Fauna Littoralis Norvegise, but the representation of the 
nuchal hook is misleading. A comparison of the figures in Mr. Webster’s paper (pi. x. 
figs. 145-147) with those connected with the Challenger specimen will show that a margin 
must be allowed for artistic variations. 
The genus OEorpata of Kinberg,^ and its single example Gdor'pata armata, from the 
Gulf of Guaiaquil, seems to be very closely related to Melinna. 
Melinna armandi, n. sp. (PI. XLVIIl. fig. 5 ; PI. XXVIIa. figs. 13, 15). 
Habitat. — Trawled at Station 168 (west of the North Island, New Zealand), July 8, 
1874; lat. 40° 28' S., long. 177° 43' E.; depth, 1100 fathoms; bottom temperature 37°’2, 
surface temperature 57°’2 ; sea-bottom, blue mud. 
A form of some magnitude, the body measuring about 45 mm. in length, and having 
at its wide anterior margin a diameter of fully 3 mm. 
In general appearance it resembles a large Melinna cristata, M. Sars, though in one 
evident character it widely diverges, viz., in the number of the denticulations of the 
fourth setigerous segment. Instead of having about fourteen, as in the former case, the 
new one has only eight, and they are proportionally much larger. The nuchal hooks 
situated behind the base of the branchiae are much stouter and the tip shorter 
(PI. XXVIIa. fig. 13), though unfortunately no complete example is available for 
illustration, a broken fragment only being present on one side. A careful comparison with 
the same organ in Melinna cristata (PI. XXVIIa. fig. 14) shows that the new form has 
1 Op. cit., 1866, p. 347. 
