30 
basal part so as to leave no continuous straight interstices be- 
tween the fovez. 
Near Palmerston, N. Terr. ; taken by Mr. Walker. 
BEROSUS. 
B. munitipennis, sp. nov. Ovalis; convexus; nitidus; supra 
pallide testaceus (exemplis nonnullis sparsim fusconotatis), 
capite prothoraceque rufescentibus ; subtus obscurus, anten- 
nis palpis pedibusque testaceis ; capite equali, fortiter crebre 
antice minus crebre) punctulato, prothorace transverso fere 
ut caput (sed minus crebre quam hujus pars postica) punctu- 
lato; elytris minus fortiter punctulato-striatis, ad apicem 
leviter emarginatis, parte emarginata extus ut spina gracilis 
perlonga producta, interstitiis planis sparsim sat fortiter 
punctulatis. Long., 241.; lat., 141. 
Allied to b. externe-spinosus, Fairm., but ditfering from that 
species, as described, by the much coarser puncturation of its 
head, its entirely testaceous legs, &c. ; differing from Queensland 
specimens in my collection (which I have no doubt are Faire- 
maire’s species) and from all the other described Australian 
Berosi, also by the very long slender spine into which the external 
apices of its elytra are produced. 
S. Australia; taken by Mr. Zietz near Lake Callabonna. 
NOTOBEROSUS (gen. nov. Hydrophilidarum ). 
Beroso affinis; differt antennis brevioribus specie 6-articulatis 
(articuli 3° 4"° que minutissimi cum 5° intime conjunguntur), 
hoc quam 6° multo latiori; mesosterno haud carinato. 
The insect for which I propose this name has very singular 
antenne. Examined under a Coddington lens they appear to 
consist of six joints, the basal two much like those of a Berosus, 
the third conical and at its apex much wider than any of the 
three joints which compose the club. Under a compound micro- 
scope however the basal part of this apparent third joint seems 
to consist of two minute joints intimately joimed to each other 
and the second of them to the large joint that follows. 
N. Zietzi, sp. nov. Ovalis; nitidus; glaber; supra albido- 
testaceus, clypeo capiteque in medio et postice plus minusve 
nigris vel obscure fuscis ; mesosterno metasterno et abdomine 
nigris ; antennarum clava vix infuscata ; capite prothorace- 
que (hoc transverso quali) subtiliter crebre punctulatis ; 
elytris nullo modo striatis, sparsim inzequaliter (hic illic sub- 
seriatim) punctulatis ; nonnullorum exemplorum (? marium) 
puncturis raris permagnis juxta suturam positis. Long., 
13.1. + Jat. 21. 
The punctures of the elytra are of several different sizes con- 
