aii 
ruguloso, prothorace elytrisque grosse sat crebre sat equaliter 
(elytris quam prothorax paullo magis crebre), pygidio leviter 
squamose sat subtiliter, punctulatis ; corpore supra sparsim 
vix manifeste (capite magis crebre) fulvo-pubescenti, subtus 
pygidioque pilis erectis minus crebre vestitis ; clypeo antice 
late leviter emarginato; hunc labro superanti; prothorace 
quam longiori fere duplo latiori, antice vix angustato, angu- 
lis anticis acutis productis posticis obtusis, lateribus sat 
arcuatis; elytris haud striatis; coxis posticis metasterno 
longitudine sat quali; tibiis anticis extus fortiter acute 
tridentatis ; tarsorum posticorum articulo 2° quam 1"* duplo 
longiori. Long., 53 1.; lat., 3—34 1. 
I do not find any notable sexual difference, but the proportion- 
ally wider specimen is probably a female. 
Lake Callabonna; taken by Mr. Zietz. 
HETERONYX. 
H. suturalis, sp. nov. Modice elongatus, sat convexus ; postice 
vix dilatatus; sat nitidus; ferrugineus, elytrorum sutura 
infuscata ; subtiliter minus crebre pubescens ; capite grosse 
subcrebre (clypeo magis crebre), prothorace sat sparsim sat 
fortiter, elytris squamose subtilius sat crebre, pygidio leviter 
sat grosse, punctulatis ; clypeo antice late levitere marginato, 
ante oculos minus dilatato, sutura clypeali subtili fere recta ; 
prothorace quam longiori fere duabus partibus (postice quam 
antice dimidia parte) latiori, lateribus sat arcuatis, basi leviter 
bisinuata, angulis anticis sat acutis vix productis posticis 
rotundato-obtusis ; elytris haud striatis, transversim minus 
manifeste rugatis ; tibiis anticis extus dentibus 2 (apicali 
incluso) acutis magnis (alioque parvo supra medium posito) 
armatis; labro clypeum sat late superanti; antennis 9- 
articulatis; coxis posticis ad latera quam metasternum 
manifeste brevioribus, quam segmentum ventrale 2" paullo 
longioribus; tarsis posticis modice elongatis, articulo 2° 
quam 1" parum longiori; unguiculis appendiculatis. Long., 
34 1.; lat., 1£ 1. 
This species belongs to my “Group VII.” of Heteronyx (vide 
P.L.S.N.S.W. 1889, p. 1219) which is tabulated in loc. cit. pp. 
662, &c. In the tabulation it falls beside H. vacwus, Blackb., 
to which it is closely allied, differing however inter alia by its 
more strongly transverse and more coarsely punctulate prothorax, 
and the well-marked infuscation of its elytral suture. 
Lake Callabonna ; taken by Mr. Zietz. 
HYPHORYCTES (gen. nov. Dynastidarwm ). 
Mentum hirsutum, sat elongatum, sat convexum, antice rotunda- 
tum; palpi modici, articulo apicali elongato-ovali; mandibulee 
