136 SUBANTARCTIC ISLANDS OF NEW ZEALAND. [Diptem. 



Legs as in the male, but with less fringe and very small pads. 

 Wings, &c., as in the male. 

 Hab. — Auckland Islands. 

 Types. — Cambridge Museum. 



Paralimnophora, gen. nov. 



Some specimens from the Enderby and Campbell Islands have a fairly close 

 resemblance to the genus Ldmnophora, but differ from the normal forms to a notice- 

 able extent. It seems best to place them imder a new genus, for which the above 

 name is proposed. 



Head. — Forehead prominent, as in Limnophora, but the face is more retreating ; 

 a line tangential to the end of the frons and the outer edge of the mouth is nearly 

 vertical in Limnophora, in the new genus it slopes considerably backwards. The 

 eyes are far apart in the male, and quite bare ; the ratio of vertical height to breadth 

 is far less than in Limnophora, and the eyes are more rounded in form. The mouth 

 is slightly prominent, and the face is slightly hollowed out between the mouth-margin 

 and the base of the antennae. The jowls are deep, owing to the less vertical height 

 of the eye. The antennae have a slightly rounded end to the 3rd joint, and the 

 arista is just pubescent when a fairly high power is used ; this pubescence exists at 

 least on the basal half, and is less than in Limnophora. The bristles present are : 

 Ocellar, very small post-verticals, subparallel inner verticals which are larger than 

 the smaller divergent outer verticals ; 2 pairs of small upper fronto-orbitals ; the 

 lower fronto-orbitals are not somewhat hairUke, as in Limnophora, but are bristly 

 and bent inwards so that they nearly meet on the centre line of the frons ; there is 

 no crossed frontal pair. The mouth is provided with strong vibrissae and other 

 mouth-bristles on the margin. 



Thorax much as in Limnophora. 



Abdomen. — This is peculiar in form ; it is much depressed, being flattened in 

 the horizontal plane. The form is oval, with roughly parallel sides and rounded 

 ends. The macrochaetae are rather weak, and are mostly on the lateral portions 

 of the disc. The 2 middle segments are spotted, as in Limnophora, except that the 

 spots are somewhat more indistinct in form and boundary. The male genitalia 

 form a well-marked rounded knob below the last segments. 



Wings as in Limnophora, but the 6th vein is at first stout and then suddenly 

 becomes faint ; the 7th vein is faint throughout. The squamae are unequal. 



Paralimnophora depressa, sp. nov. 



Length. — Of body, 5 mm. ; of wing, 5 mm. 



Head grey, cheeks silvery. Antennae black. Palpi yellow. Proboscis black. 



Thorax shaped as above ; grey ; minutely bristled between the macrochaetae. 



Abdomen grey ; a pair of indistinct brownish spots of fairly large size on the 

 2nd and 3rd segments, with a lighter grey median stripe between them. 



Legs. — All the femora dark grey ; knees and rest of all the legs yellow. 



Wings clear ; Ist vein brown, others blackish, except at the base, where they 

 are yellowish ; no spur on costa ; 6th and 7th veins not reaching margin, the latter 



