71 



quam 2"* breviori ; prothorace quam. longiori ut 12 ad 

 7 latiori, antice modice angustato, supra sparsim sat 

 grosse nonnihil acervatim punctulato (puncturis circiter 

 12 in segmenti longitudine), lateribus (superne visis) 

 ieviter arcuatis, angulis anticis sat acutis sat productis 

 posticis (superne visis) obtusis fere rectis, basi bisinuata, 

 margine basali ad latera paullo magis elevato ; elytris 

 striatis sparsim granulatis, sparsim subgrosse nonnihil 

 subseriatim punctulatis (trans elytron puncturis circiter 

 14) ; pygidio sparsissime punctulato ; coxis posticis quam 

 metasternum sat multo brevioribus, quam segmentum 

 ventrale 2"'" minus longioribus ; segmentis ventralibus 

 minus sparsim confuse subfortiter (prsesertim latera ver- 

 sus) punctulatis ; femoribus posticis sat dilatatis, inter 

 series Isevibus : tibiis anticis extus tridentatis ; tarsorum 

 posticorum articulo basali quam 2"^^ sat breviori 3^ sat 

 aequali vel subbreviori : unguiculis appendiculatis. Long., 

 5-5| 1.; lat., 2|-3 1. 



This species and the next two illustrate conspicuously the 

 tendency in Heteroni/.r to strongly marked structural differ- 

 ences in combination with close superficial resemblance, in- 

 asmuch as they are extremely like in general appearance to 

 some species of Group III. (JI . menis, Blackb., etc.), which 

 have strongly bifid claws, while the claws of these are typi- 

 cally appendiculate. I have two specimens of H . sfriatus, evi- 

 dently male and female — the male notably smaller and nar- 

 rower than the female and presenting the unusual (in Hefer- 

 onyoc) sexual character of a distinctive clypeal outline (unless 

 it be an accidental peculiarity of an individual specimen) . The 

 striation of the elytra is unusually well defined, but, as usual 

 in Heteronyx when present, has no relation to the punctures, 

 which are scattered indiscriminately on strise and interstices. 



New South Wales; Emu Plains (Mr. Sloane). 

 H . salebrosus, sp. nov. Minus elongatus, postice Ieviter dila- 

 tatus ; sat nitidus ; rufo-ferrugineus ; ut H. striatvs, 

 Blackb., vestitus ; capite ut //. striati (clypeo antice late 

 rotundato) ; prothorace fere ut H . striafi, sed supra 

 minus grosse sat magis crebre nee acervatim punctulato 

 (puncturis circiter 17 in segmenti longitudine) : elytris 

 manifeste striatis, quam H. striafi magis crebre pimctu- 

 latis (trans elytron puncturis circiter 18), sparsissime vix 

 granulatis; cetera fere ut H. striati, sed segmentis ven- 

 tralibus sublsevibus (seriebus puncturarum setiferarum 

 exceptis). Long., 5|-6 1.; lat., 3-3i 1. 

 This species and H . striatum and H. seriatus form an 

 aggregate so easily identifiable in B eteronyx that it seems 

 sufficient to describe one of them completely and then specify 



