Suarp—On New Zealand Coleoptera. 407 
studded with depressed flavescent sete. The anterior angles of the thorax are 
much produced, and the disc is rendered uneven by some indistinct depressions. 
The scutellum is remarkably small. Along each wing-case there are three or four 
irregular stripes formed by minute asperities and punctures placed in pairs; the 
surface between these is scarcely at all elevated, but here and there is slightly 
swollen laterally ; just before the declivous apex there are three slight tubercles on 
each elytron, the margin is elevated, and within it are coarse, indefinite depressions. 
Picton. Helms; one example. 
SYRPHETODES. 
Syrphetodes bullatus, n. sp.—Fuscus, indumento ochraceo-brunneo vestitus ; 
prothorace angulis anterioribus per-productis, margine anteriore medio tuberculato- 
emarginato; elytris conyexis dorso tuberculis quatuor grossis instructis. Long. 9 
m.m. 
Antennz blackish; thorax with the anterior angles very long, very acute, 
widely separated from the eyes; the sides bisinuate; the hind-angles free, rectan- 
gular, very sharply defined. Elytra nearly twice as broad at the base as the base 
of the thorax, just behind the shoulder with a sharp tubercle directed outwards, 
causing the shoulders to look hamate; the dise provided with four very large 
elevations, and a pair of smaller acute tubercles between them and the base ; the sides 
but little explanate; the lateral outline undulate near the outer margin, with seven 
or eight fovez ; tibize and tarsi blackish, the former spotted with pallid scales. 
Greymouth. Helms, No. 81. I received my example of this remarkable insect from Mr. Helms 
some years ago; it was the first example of the genus I had seen, and I thought it might be S. margi- 
natus, Pascoe. Mr. Helms has, however, found recently a small series of a species at Picton, which 
agrees much better with Pascoe’s figure, and I have no doubt the Greymouth insect is new. 
PrriaTruM (noy. gen. Helopmorum). 
Pseudopatri affine. Caput utrinque supra oculos fere planum, his subtransversis 
vix sinuatis. Antennz articulo tertio sat elongato. 
Although this insect is closely allied to Pseudopatrum, the differences in the 
head and eyes, accompanied by other less important peculiarities, warrant its 
generic differentiation, though the important points of structure are similar, 
Neither the clypeus nor the labrum is emarginate. The tibial spurs are extremely 
obscure, and the tarsi are quite slender. The pseudepipleurz are extremely broad 
at the base, and there are well defined and acutely inflexed; they are not marked 
off from the upper surface by a margin, but by a sort of tuberculation ; this becomes 
coarser behind, so that towards the extremity the pseudepipleurze have ccased to 
exist; there is no trace of the extraordinary fossee that exist on them in Pseudc- 
TRANS. ROY. DUB. SOC., N.S. VOL. III. 33 IL 
