The present paper is the fifth and the last part of the report on the 
Mi crolepidoptera of the Third Archbold Expedition to Netherlands 
New Guinea 1938 — 1939. The previous parts were published as no. 1, 
pp. 1—167, 1952, no. 3, pp. 1 — 166, no. 4, pp. 1 — 164 of the 49th volume 
and no. 1, pp. 1 — 191 of the present volume of these Verlmndelingen. 
In the present part are given descriptions and records of the families 
listed on the opposite page; 19 genera, 90 species, and 3 subspecies are 
described as new. The systematic part is followed by a list of the species 
with the collecting localities, by a general chapter containing a few 
considerations on the aspects of the Microlepidopterous fauna of 
Central New Guinea, and by an index of the Latin names of the treated 
Microlepidoptera. 
HELIODINIDAE 
This group of narrow-winged species seems to be quite insufficiently 
studied as to the neuration of the both wings. A careful revision is, there- 
fore, highly desirable; it certainly will bring many new points to fight. 
Several genera are very inadequately described and are difficult of 
recognition or entirely unrecognisable. In this connection we need only to 
refer to a revision of the Australian representatives of the Heliodinidae 
by A. J. Turner (Trans. Roy. Soc. South Austral., vol. 65, pp. 14 — 27, 
1941), in which paper hardly any reference to the neuration of hind wings 
is made in the diagnoses of the genera; in the generic key these characters 
are left out of consideration altogether. 
The relation of the family with the Glyphipterygidae, as pointed out by 
Meyrick, appears to us rather dubious. The male genitalia might be of a 
Gelechioid stock ; they approach in some points those of Cosmopterygidae 
(ventrally united valvae) but are less highly developed than in that family. 
Key to the Papuan genera of Heliodinidae 
1. Labial palpi absent Oymnogelastis Meyrick 
Labial palpi present 2 
2. Scape of antenna with an eyecap Hieromantis Meyrick 
Scape of antenna without eyecap 3 
3. Labial palpus short Thriambeutis Meyrick 
Labial palpus moderate or long 4 
4. Antenna scaled 6 
Antenna not scaled 8 
5. Hind wing with veins 3 and 4 stalked, 6 and 7 stalked, vein 5 absent . . 
Diascepsis Dtjrrant 1 ) 
Hind wing with all veins present and separate 6 
b Probably belongs to the Gelechiidae. 
