Diptera.] ^ SUBANTARCTIC ISLANDS OF NEW ZEALAND. 135 



The second species is much like an ordinary form of the genus, except for the 

 hairy eyes. It is proposed to make tlie following species for the specimens, which are 

 one male and two females. As the species of this genus are moderately sexually 

 dimorphic, the descriptions of the sexes are giveii separately. 



Limnophora lasiophthalma, sp. nov. 



Size. — Body, ahuut (i mm. ; wiiii;, about 5^ mm. 



Male. — Head. — Vertex and frons narrow, more than is usual in the genus ; 

 black. The face in profile is conical from the side view, and is a very little hollowed 

 out between the end of the frons and the mouth-margin. Cheeks black from a side 

 view, with golden reflections on front view. Face and jowls silvery-grey. Antennae 

 black, the .3rd joint long with subparallel sides and a slightly rounded end to 

 the same. Arista evidently pubescent, especially on the basal half. Palpi black. 

 Eyes normal in shiipe for the genus, but closely and thickly covered with fine yellow 

 hair. 



Tlinrax and scutellum black, with a bluish tone ; an indistinct and irregular 

 silveriness or sheen extends from the humeri to the wing-base. 



Abdomen. — Basal segment black. The 2 middle segments with a greyish-yellow 

 gromid-colour and a pair of slightly indistinct spots on each ; these spots are roughly 

 trapezoidal in form. The hind boundary is formed by the hind margin of the seg- 

 ment, and extends from near the centre line of the abdomen to slightly before the 

 edge of the same. The front boundary of the spot is formed by the front margin 

 of the segment, and extends from near the centre line, but only a short distance 

 along the segment. The other two boundaries (across the abdominal segment) are 

 as follows : The inner one is straight, so that between the pair of spots the ground- 

 colour shows as a somewhat indistinct straight line ; the outer bouncUiry is an 

 unduliited line passing from the front edge of the segment to the back edge. The 

 terminal segments have on them two indistinct black spots. 



Legs black, with the usual stout bristly fringe on the lower side, and large yellow 

 foot-pads. 



Wings and squamae of the normal form for the genus ; wings clear, with l)Iack 

 veins. Squamae unequal. The halteres are bright yellow. 



FeiMALE. — Head far less prominent than in the male ; vertex and frons broad ; 

 black. Cheeks, face, and jowls with a bright-yellow pollination. Antennae as in 

 the male, but the arista less evidently pubescent. Eyes as in the male. 



Thorax black, with a pair of indistinct narrow grey lines extending from the 

 front to the cross-suture. A light-grey pollinated irregular line passes from the 

 humeri to the wing-root in the place occupied by the silvery line in the male. <S't'M- 

 tellum with the disc yellowish in the centre line and grey each side of that line. The 

 sides black and the tip yellow. A pair of pollinated spots on each side at the base, 

 and a similar pair on the disc of the thorax just before the base of the scutellum. 



Abdomen with the spots more extensive than in the male, m that the ground- 

 colour only shows on the centre line, and as a pair of roughly semicircular spots on 

 each of the mid segments, those spots being on the front margins of the segments ; 

 consequently the hind and outer-side margins of the segments are black from the 

 extension of the spots. 



