238 Mr. W. A. Haswell on the 
second median branches also lie close together for almost their 
entire length, the third being further apart from them. 
75. Phlogothauma scintillans, sp. n. 
Primaries above golden cupreous, with fiery-pink reflec- 
tions ; a tapering hyaline marginal band from the inner mar- 
gin to above the upper radial vein, slightly tinted with yellow ; 
costal and external borders, inner margin, subcostal and 
median veins, and the outer two thirds of the radials purplish 
black : secondaries with the basal half from costa to subme- 
dian vein golden cupreous, with fiery reflections ; abdominal 
and external areas hyaline, slightly yellowish, and traversed 
by black veins; fringe purplish black, with a few cupreous 
scales along the internal edge (as also in the primaries) : body 
blue black; front of head and collar pearly white; palpi, 
coxee, and under surface of femora brassy yellow; the broad 
tibial fringe of anterior legs purplish black, golden cupreous 
at the base. Expanse of wings 34 millim. 
New Britain. 
Hyponomeutide. 
76. Corinea aurata, sp. n. 
Primaries shining metallic golden: secondaries with the 
interno-basal half reddish golden (or golden ochreous), the 
apical half dark grey, shot with emerald-green: body golden. 
Primaries below and apical half of. secondaries smoky grey, 
with slight purplish (or plum-coloured) reflections ; the base 
of primaries and interno-basal half of secondaries golden 
ochreous; pectus dark brown, with large lateral silvery-white 
patches: the legs bronze-brown, with one or two white bars, 
the tarsi pale; venter golden ochreous, banded with white. 
Expanse of wings 25 millim. 
Duke-of-York Island. 
XXI.—On the Structure and Functions of the Elytra of the 
Aphroditacean Annelids. By Wittiam A, HASWELL, 
MAY, sede. 
THE possession of elytra, or scales, is one of the most charac- 
teristic peculiarities in the structure of the Aphroditacea. 
These elytra are thin squames of varying shape, but always 
more or less rounded, sometimes delicate and membranaceous, 
at other times stiff and horny, which cover the back of the 
