235 



fore I shall provisionally use both Dr. Sharp's names for the 

 species before nie. Dr. Sharp says that his T. jnlicol/is and 

 E. striat/ts are exc-essively like each other; a similar statement 

 may justifiably be made regarding the two species I am about 

 to describe. The question arises whether it may be that Tri- 

 chelasTnus is the female of EiiantilluH; but I think it must be 

 answered in the negative, although certainly it seems a sus- 

 picious circumstance that each genus should contain two 

 species, not very like each other superficially, but each ex- 

 tremely like one in the other genus. The objection to re- 

 garding the difference between these two aggregates as sexual 

 are as follows (at any rate in respect of the two forms before 

 me) : — (a) In no species known to me of the Australian Melo- 

 lonthidei< is there, strictly speaking, a difference between the 

 number of joints in the antennal flabellum of the male and 

 the female ; where such a difference has been recorded it has 

 been founded on the fact of the basal joint or joints of 

 the flabellum in the female being so slightly prolonged as 

 to have been (incorrectly) excluded from the flabellum, where- 

 as of the species before me one has basal three and the other 

 only basal two joints devoid of any inner prolongation what- 

 ever ; (h) in one of the forms before me the antepenultimate 

 joint of the maxillary palpi is considerably longer than the 

 penultimate; while in the other the corresponding joints are 

 of equal length; (c) the striation of the elytra is notably 

 different in the two forms ; fdj in the specimen before me 

 which is evidently Sharp's Trichelasmiis the ventral segments 

 are of the male type (shorter and more crowded together, with 

 the apex of the pygidium slightly inclined towards the ven- 

 tral segments) but its antennal flabellum is of the female 

 type (if the two were considered to be sexes of one species), 

 whereas in the specimen that is Sharp's Enamillus the ven- 

 tral segments (on the supposition of the two forms being 

 sexes of one species) would point to its being the female and 

 the antennal structure to its being the male; fe) having be- 

 fore me two specimens of the TricheJasmus form, I find that 

 in one of the specimens there is a large, circular, deep fovea 

 in the centre of the pygidium which may possibly be acci- 

 dental, but which on the other hand not improbably in- 

 dicates that I have both sexes of TricheJasmus before me. 



Enamillus. 

 E. Maurlcei, sp. nov. Piceo-niger, pruinosus, antennarum 

 stipite ferrugineo, elytrorum partibus 2 basalibus l«te 

 rufis ; corpore subtus fronte pronoto scutelloque longe 

 fulvo-pilosis ; labro subnitido laevi leviter trausverso, quam 

 clypeus vix angustiori; clypeo subnitido crebre subtilius 



