188 Transactions. — Zoology. 



Rhypholophus insulsus, sp. no v. 



Pale-tawny, the joints of the antennae dark-brown at their 

 bases. Palpi brown. An irregular brown dorsal stripe on the 

 abdomen. The last three or four joints of the tarsi fuscous. 

 Halteres pale-tawny. Wings tinged with tawny, the veins 

 darker ; all the cross-veins slightly bordered with brown, and 

 a small brown spot at the origin of the second longitudinal 

 vein. No discal cell. Submarginal cross-vein opposite the 

 tip of the auxiliary vein. Third posterior cell with a short 

 petiole. Seventh longitudinal siuuated. Forceps of the male 

 double ; the outer pair tawny ; the inner pair slender and 

 dark-brown. Lengch, $ 7 mm.. 5 5-6 mm. ; of antennae, 

 $ 9 mm., 2 3^mm.; wing, J 9 mm., 2 8 mm. 



Hab. Wellington (G. V. Hudson). 



Rhypholophus fatuus, sp. nov. 



Female. — Dark-brown, the legs nearly black, with two 

 pale rings on the femora, one at the tip the other beyond the 

 middle. Wings rather smoky, darker towards the tips ; a 

 dark fascia from the tip of the auxiliary vein to the chief 

 cross-vein ; a dark spot on the upper margin of the first 

 basal cell and another at the apex of the second basal cell. 

 Neuration as in the last species. 



Hab. Wellington (G. V. Hudson). 



I have only one specimen, the antennae of which have six- 

 teen joints, those of the flagellum with whorls of short hairs. 



Genus Opifex, gen. nov. 



Two submarginal cells, of which the second is nearly 

 twice as long as the first ; four posterior cells ; no discal cell. 

 Wings hairy along the veins only. Second longitudinal 

 originates at a very acute angle before the middle of the 

 anterior margin. No subcostal nor marginal cross-veins. 

 Anterior branch of the fourth longitudinal forked, the pos- 

 terior branch simple. Seventh longitudinal short, straight, 

 not reaching the margin. Tibiae without spurs at their tips ; 

 empodia indistinct or absent. Antennae 16-jointed. Rostrum 

 short. Proboscis elongated, much longer than the head, 

 cylindrical, rather swollen at the apex. Palpi long, but 

 shorter than the proboscis. Legs short. 



This genus differs from Erioptera not only in the long 

 proboscis and short legs, but also in the absence of a 

 marginal cross-vein, and in fourth posterior cell being pointed 

 at its base. 



Opifex fuscus, sp. nov. 



Uniform brown ; proboscis, palpi, antennae, and legs 

 lighter than the body. Wings brown. Second posterior cell 



