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margin; but it is evidently distinct from the present insect, as 
its size is given as much smaller (long., 24 1.), and its head is said 
to have a “small sharp notch on either side under the eyes,” 
which is not present in the specimen before me. Besides the 
Queensland species three from Western Australia have been 
described by Sir W. Macleay as attributable to this genus ; they, 
however, are very different from the Queensland species, and 
perhaps not genuine members of Z'emnoplectron, as two of them 
are said to have the clypeus ‘“‘sex-dentate in front ;” and the other 
(scarcely described) is a very minute species (long., 11.). The 
examples on which this description is founded are females. 
Probably the sexual characters of the male are very similar to 
those in the other species of the genus. 
N. Queensland. 
RHOPHA. 
f. callabonnensis, sp. nov. Sat elongata ; pubescens, capite inter 
oculos prothorace sternis (his densissime) pygidio pedibusque 
longe villosis; rufescens vel flavo-brunneus ; clypeo (hoc 
fortiter concavo) et capite postice sublevibus ; capite inter 
oculos crassissime ruguloso; prothorace quam longiori (et 
postice quam antice) duabus partibus latiori, minus crebre 
subfortiter punctulato, lateribus crenulatis angulis posticis 
obtusis ; elytris subcrasse rugulosis, obsolete 4-costatis. 
Maris antennarum flabello elongato 7-articulato. Long., 11 1. ; 
lat., 54 1. 
Differs from all its previously described congeners except 
f. Mussoni, Blackb., by its much coarser sculpture. From 
Musson it may be at once distinguished by the antennal flabel- 
lum of the male having seven equal joints, by the deeply con- 
cave and almost impunctulate clypeus, &c. 
S. Australia; taken by Mr. Zietz near Lake Callabonna. 
ZIETZIA (gen. nov. Macrophyllidarum). 
Mas. Mentum sat planum, antice sat truncatum; maxille 
modicz, loba externa dentata ; palpi labiales breves, articulo 
apicali ad apicem obtuso ; palpi maxillares elongati, articulo 
apicali quam ceteri conjuncti sublongiori supra longitudinali- 
ter impresso; labrum perpendiculare haud emarginatum ; 
antenne 10-articulate, clava 8-articulata arcuata quam 
stipes quintuplo longiori ; elytra (vix seriatim) punctulata, 
vix distincte costulata; cox antice transverse; pedes 
modici, tarsis haud dilatatis, unguiculis simplicibus. 
This genus may be at once distinguished from nearly if not 
quite all other Melelonthid genera by the following characters in 
combination :—Claws simple, antenne 10-jointed, with an 8- 
jointed club. It is no doubt allied to Holophylla and Othnonius. 
