Marshall.— 0?i Neio Zealand Diptcra. 265 



fifth longitudinal rudimentary. Large patch of brown at the 

 apex, and another'patch nearer the base. 



This very tine and remarkable species has, so far, only 

 been taken near Wellington. Mr. Hudson has kindly lent me 

 a specmien for drawing up this description. I have no hesi- 

 tation m creating a new genus for its reception. 



Nervijuncta, gen. nov. 

 Head nearly round, front not flattened. Eyes large, emar- 

 ginate, almost meeting just in front of the ocelli. Ocelli 

 three, large, situated almost in a line on the front. Palpi 

 four-jointed, short — first joint small ; second longer and con- 

 siderably swollen, the broadest part being in the middle ; third 

 joint rather shorter than the second, cylindrical, and rather 

 narrow ; fourth joint longest, very slender. Antennae shorter 

 than the thorax ; first joint of scapus short and broad, 

 cupuliform ; second joint twice the length of the first and not 

 so broad, almost cylindrical ; flagellum slender, cylindrical, 

 2 -f 15 jointed, length of joints about three times theu' 

 breadth, joints decieasing in diameter towards the apex of 

 the antenna, pubescent, several stout setae situated near the 

 centre of each joint. Thorax highly arched, pubescent, with 

 strong setae on the lateral margins. Scutellum slim, circular, 

 bordered with setae on posterior margin. Metathorax accli- 

 vous. Abdomen rather flattened, seven-jointed, slender in 

 front but becoming broad posteriorly. J^'orceps of male two- 

 jointed, first joint almost spherical, crateriform at the apex, 

 densely hairy ; second joint double the length of the first, 

 cylindrical, hairy. Legs slender; coxa3 much stouter than 

 the femora, almost naked ; femora about twice the length of 

 the coxae, pubescent ; tibite slender, in fore-leg rather more 

 than half the length of the tarsus, in intermediate leg very 

 sliglitly longer than tarsus, in posterior leg rather longer than 

 tarsus and with two rows of few but rather long and slender 

 spines ; spurs very distinct ; metatarsus long, that of inter- 

 mediate and posterior legs with a few minute prickles. Wings 

 larger than the abdomen, rounded at the apex and cuneiformly 

 narrowed at the base, pubescent on the surface. Auxiliary 

 vein a short tooth not joining the costa nor the first longi- 

 tudinal ; first longitudinal joining the margin at about two- 

 thirds the length of the wing ; inner marginal cell about one- 

 third of the length of the v*'ing ; third longitudinal arising 

 from the second beyond the apex of inner marginal cell ; 

 anterior branch of second longitudinal slightly arcuated, 

 joining margin some distance in front of first longitudinal ; 

 posterior branch of second longitudinal joining the tip of costa 

 almost at the apex of the wing; fork of third longitudinal 

 situated just beyond the fork of the second, branches not 



