SHarp—On New Zealand Coleoptera. 449 
Phyllotreta rugulosa, Broun. The genus may be placed near Phyllotreta, from which it is distinguished 
by the very abbreviate metasternum. 
PLeuRALTICA (noy. gen Halticinorum). 
Acetabule anteriores aperte; pronotum absque sulca transversa;  tibic 
posteriores ecalcaratz ; metasternum sat elongatum. 
This genus I propose for the reception of Phyllotreta cyaneum, Broun. It is 
not much allied to Phyllotreta, nor apparently to any known form. It has very 
long antenna, 11-jointed, with elongate basal joint; the front coxe are 
moderately separated, and the mesosternum is very slightly impressed in the 
middle for the reception of the prosternal process; the metasternum is of 
normal length, and the hind cox rather widely separated; the hind femora are 
moderately broad, rather flat; the tibiz are not grooved at the extremity, but 
their superior external aspect is flat, and polished nearly up to the knee, and its 
outer edge is finely and densely minutely ciliate near the extremity; the epipleurze 
are broad, and do not disappear till near the extremity. The female has a raised 
plica on the elytra extending backwards from the shoulder; and in the male the 
epipleurz are broader and more deeply sulcate. (Plate xmr., fig. 25.) 
Lurrrvs, Auct. 
Broun, in his ‘ Manual of New Zealand Coleoptera,” has described, p. 631, as a 
new genus, under the name of Adoxia, some insects which he says differ from 
Luperus in the form of the head and structure of the palpi and antennee. Luperus 
is a cosmopolitan genus already recorded from Polynesia and New Caledonia; and 
after a prolonged comparison of the New Zealand species at my disposition, 
I have quite failed to find any character to distinguish them generically from 
those of other countries. One species indeed I can separate only by slight specific 
characters from a Brazilian species of the genus. 
Luperus nigricornis, n. sp.—Niger, vertice fusco, thorace testaceo, elytris 
albido-testaceis, dense punctatis, sutura margineque externo omnium angustissime 
nigris. Long. 45—5 m.m. 
Antenne black, basal joimt but little swollen, third joint longer than second, 
fourth much longer than third; each of the joints towards the extremity three or 
four times longer than broad. Head black in front, the vertex brown. ‘Thorax 
yellow, nearly twice as broad as long, much narrower than the elytra; its sides 
nearly straight, simply margined, without denticle at anterior angle; the surface 
appears smooth, but is really rather closely punctate, though the punctuation is 
quite obsolete. Scutellum black. Elytra very pallid, but with the suture as well 
as the outer margin just visibly marked with black; they are finely but extremely 
