1 G4 Transa c tions . — Zoology . 



ovate, bearing at the extremity some small spines, which bear 

 short white cotton, producing a brush-like appearance. Anal 

 ring with a regularly convex posterior edge, the anterior edge 

 rather deeply depressed on each side of a median projection, 

 and the ends rather angular. Several minute spines on the 

 abdomen and feet. 



Hah. In New Zealand, on Fuchsia excorticata. 



I place this insect in the genus Bhinocola because, in the 

 wing-venation (straight veins) and in the form of the male 

 genital plate, it agrees with that genus. The excessive pro- 

 minence of the eyes in the adult, the quadri- valve female 

 genitalia, and the angular ends of the anal ring are distin- 

 guishing characters ; and the strong black papillae on the 

 male genital processes are, as far as my information extends, 

 unique in the family. But I do not take these as anything 

 more than specific distinctions, esj)ecially abominating (except 

 on the clearest grounds) the erection of new genera on single 

 species. B. fuchsicB is the smallest of the New Zealand 

 Psyllidce which I have yet seen ; and its very delicate colour, 

 both in the adult and in the pupal states, makes it difhcult 

 of detection on the white under-surface of the leaves of the 

 tree-fuchsia, its favourite plant. 



Sub-family TEIOZIN^, Low. 

 Genus Tkioza, Forster. 



Front of head produced into two conical processes ; stalk 

 of the cubitus in forewing wanting ; third joint of the antenna 

 not thicker than the fourth. 



The last character here mentioned serves to separate Trioza 

 from Bactcricera, Forster, in which the third joint of the 

 antenna is as thick as the first two. I am not sure that so 

 minute a difference is sufficient for generic distinction. Bac- 

 tcricera appears also to have the front of the head only 

 "swollen" anteriorly; but a similar fact is not considered 

 of great importance in the Aplialarince, and the swelling may 

 be so near to the short conical processes of Trioza that per- 

 haps future systematists may unite the two genera. 



Trioza pellucida, sp. nov. Plate XL 



Poicellia vitreoradiata, mihi, "Trans. N.Z. Inst.," 

 1878, p. 223. 

 Adult female of a generally light-brownish colour with green 

 shades, becoming slightly darker with age ; length, inclusive of 

 genital valves, about i\in. ; expanse of wings -gin. Viewed 

 (lorsally the head is yellow, thorax generally yellow (rather 

 darker than the head), prothorax brown ; eyes proininent, 

 rich dark-brown ; ocelli light-brown ; abdomen yellow, with 



