Marshall. — On Neio Zealand Diptera. 23iJ 



with a few long black hairs, becoming fuscous towards the 

 abdomen. Scutellum pink. Halteres whitish, thinly clothed 

 with black hairs ; club moderate. Abdomen dull-red, moderately 

 haired. Legs dusky-yellow ; first, third, and fifth joints about 

 equal length, slightly longer than the fourth, second nearly 

 twice as long as the first ; clothed with moderate black hairs. 

 Wings hyaline, with a few scattered black hairs on the surface. 

 First longitudinal vein one-third the length of the wing, dark- 

 brown ; second longitudinal apparently arises some distance 

 below first longitudinal, at about one-third of its length ; third 

 longitudinal close to margin, very indistinct before joining 

 with it. 



I am rather doubtful as to whether this species is classified 

 coriectly. I hope to obtain other specimens during the en- 

 suing summer, and make another more detailed examination. 



Miastor difficiiis, n. sp. 



Antennae, 0-027; expanse of wing, 0-045 x 0016; body, 

 0"027 X 0-005. Antennae light-grey, as long as the body; joints 

 near tlie base elongate, elliptical, about twice the length of the 

 pedicels, becoming nearly globose towards the tip ; verticils 

 about twice the length of the joints, spreading. Thorax dark- 

 brown, a few long hairs, without any apparent arrangement, 

 arising from it. Scutellum brown in the centre, bordered with 

 grey. Halteres white, with long pedicels ; club large, elon- 

 gate, pyriform in sliape. Abdomen with first two segments 

 nearly black, remainder orange-red, sparingly clothed with dark 

 hairs. Legs pale-yellow, with nmnerous short black hairs ; 

 first joint of tarsus very short, others indistinguishable from 

 one another. Wings hyaline, slightly hairy. First longitu- 

 dinal vein indistinct, close to costa, about one-third the length 

 of the wing; second longitudinal vein arising from about a 

 third of length of first longitudinal, some distance below it ; 

 third longitudinal close to margin, bends sharply downwards 

 before ending in the margin. 



I have only a single specimen of this insect. I am not 

 quite satisfied as to its position. (Lincoln, January.) 



Genus 3. Cecidomyia, Meig. 



Antenna long, moniliform or cylindrical, generally verticillate, 

 rarely without verticils, from 2 + 9 to 2 -f- 36 jointed. 

 Wings with three or four longitudinal veins, generally a 

 longitudinal fold between the second and third longitudinal 

 veins. 



Section I. 



Wings with three longitudinal veins, tlie third either forming 

 a fork or becoming more or less obsolete towards the tip. 



