. R. WALLACE, with Descriptions of New Species. By FRANCIS WALKER.

ARU ISLAND.

Fam. MYCETOPHILIDAE, _Haliday_.

Gen. SCIARA, _Meigen_.

Div. A. _a., Meig_. vi. 305.

1. SCIARA SELECTA, n. s. _Mas_. Nigra, cinereo-tomentosa, antennis sat
validis, pedibus piceis, alis cinereis, venis costalibus crassis.

_Male_. Black, with cinereous tomentum; antennae rather stout; legs
piceous; wings greyish; veins black; radial and cubital veins thick;
radial vein extending to the fork of the subapical. Length of the body
1-3/4 line; of the wings 4 lines.

Fam. BIBIONIDAE, _Haliday_.

Gen. PLECIA, _Hoffmansegg_.

2. Plecia dorsalis, _Walk_. See Vol. I. p. 5.

Fam. CULICIDAE, _Haliday_.

3. CULEX SCUTELLARIS, n. s. _Mas_. Nigro-fuscus, capite thoraceque
argenteo trivittatis, scutello rufescente; abdominis segmentis argenteo
fasciatis, genubus et tarsorum posticorum fasciis niveis; alis
subcinereis, venis nigris ciliatis.

_Male_. Blackish brown. Head and thorax with three silvery stripes, the
middle one very distinct; scutellum reddish; pectus with silvery gloss;
abdomen with silvery bands, which are narrow above, broad beneath;
femora pale towards the base; knees snow-white; hind tarsi with 5 broad
snow-white bands; middle tarsi with the first and second joints white at
the base; wings slightly greyish; veins black, fringed. Length of the
body 3 lines; of the wings 5 lines.

Fam. TIPULIDAE.

Gen. MEGISTOCERA, _Wied_.

4. Megistocera tuscana, _Wied. Auss. Zweist._ 1. 55. 1. Inhabits also
Java.

Gen. GYNOPLISTIA, _Westw_.

5. GYNOPLISTIA JURGIOSA, n. s. _Mas. et Foem._ Nigra, capite rufescente,
alis cinereis, plagis costalibus nigro-fuscis.--_Mas_. Abdomine
ochraceo, apice nigro, femoribus basi testaceis.--_Foem._ Abdomine atro
fasciis albidis apice luteo.

_Male and Female._ Black. Head reddish; antennae testaceous at the base;
thorax testaceous in front; wings greyish, blackish-brown along the
costa, and with three subcostal blackish-brown patches, the third
continued along the veins towards the hind border. _Male_. Abdomen
ochraceous, black at the tip; femora testaceous at the base; halteres
testaceous. _Female._ Abdomen deep black, with whitish bands on the
sutures; tip luteous. Length of the body 5-6 lines; of the wings 9-10
lines.

Fam. STRATIOMIDAE, _Haliday_.

Gen. PTILOCERA, _Wied_.

6. Ptilocera quadridentata. See Vol. 1. p. _7_.

7. MASSICYTA INFLATA, n. s. _Foem._ Nigra, capite vir