274 Transactions. — Zoology. 



ness, brown. Hypostoma brown. Palpi yellow. Front 

 and vertex black. Thorax black or very deep brown, levi- 

 gate, with a median yellow line ; the humeri and lateral 

 borders pale - yellow or whitish ; two convergent rows of 

 short black han-s from humeri to scutellum ; some black 

 bristly hairs above the origin of the wings. Pleurte deep- 

 brown tinged with pale-yellow. Halteres pallid, the club 

 black. Abdomen slender, subcylindrical, five times the 

 length of the thorax, dusky-brown ; the segments distinctly, 

 especially the hindermost ones, tinged with yellowish an- 

 teriorly, densely clothed with very short black or brown 

 hairs. Extremity and lamella of ovipositor yellow. Legs 

 long and very slender; coxae pale-yellow or whitish, the 

 fore and intermediate pairs with the extreme apex and 

 the hind pair with almost the apical half dusky-brown, 

 trochanters dusky-brown ; femora pale-yellow or whitish, 

 the hind pair black at the apex ; tibige and tarsi black, 

 tibial spurs black ; in the fore-legs the tibiae and metatarsi 

 of about equal length, the tarsi twice the length of the 

 tibige. Wings shorter than the abdomen, pellucid, with 

 a delicate yellowish tint, and almost the apical half infur- 

 cated with grey. Costal vein uniting with the tip of the 

 third longitudinal vein somewhat beyond the apex of the 

 wing; auxiliary vein terminating in the costa opposite or 

 somewhat beyond the inner end of the second posterior 

 cell, the subcostal cross-vein situated near its base; first 

 longitudinal vein running straight into the costa, near a 

 point before the tip of the posterior branch of the fourth 

 longitudinal vein ; third longitudinal vein greatly arcuated 

 near its base, strongly arcuated near its tip ; posterior branch 

 of fifth longitudinal vein abruptly reaching the margin. 



Though well acquainted with the larva, I have never 

 taken the mature foi-m of this insect. Mr. G. V. Hudson, 

 of Wellington, has hatched out some of the larvae, from 

 one of which this description was drawn by Mr. Skuse. 



Genus Ceroplatus, Bosc. 

 Head small, broadly oval, flattened on the fore part. Eyes 

 oval, sometimes a little emargiuate on the inner side above. 

 Ocelli three, on a curved line on the front. Palpi short, not 

 incurved, with three or four joints ; first joint small, the 

 others large. Antennae projecting forwards, shorter than the 

 head and thorax together, very flat and broad, broadest in the 

 middle, 2 + 14 jointed ; joints of the scapus cotilliform, in 

 some species the first joint prolonged in front ; flagellar joints 

 almost annular, the last joint conical or gemmifonn. Thorax 

 oval, highly arched. Scutellum almost semicircular. Meta- 

 thorax arched. Abdomen cylindrical, or a little flattened, 



