209 



middle, the lateral margins and apex being also testaceous. In 

 some examples the testaceous colour of the apex is intensified in 

 the middle in such manner that it appears as a distinct oblique 

 line of almost vivid yellow ; but the markings shade off into the 

 ground colour so vaguely that they present a different appearance 

 according to the position from which the insect is looked at. On 

 the underside the prevailing colour is reddish brown with the 

 breast darker, against which the pale testaceous epipleurae of the 

 elytra show up very conspicuously. The puncturation of the 

 upper surface differs from that in R. nitidus and R. approxhnatus 

 by its much more even distribution — the prothorax being punc- 

 tured almost uniformly with the elytra — and from that in 

 R. sperati(,s by its being slightly stronger and less close. 

 Port Lincoln ; also near Adelaide. 



SEEANGIUM, gen. nov. 

 Caput prothoraci profunde insertum ; antennis 1 1 articulatis, 

 clava magna, basi aperta ; oculi oblongi, sat fortiter granu- 

 lati, intus subparalleli vel potius leviter antice convergentes ; 

 epipleuraj sat angust^e, postice angustatpe, concavae, elytrorum 

 in parte quarta postica obsolet?e, contra pedes intermedios et 

 posticos profunde foveatse ; prosternum antice sat elongatum, 

 sat gequaliter convexum, in medio longitudinaliter nee cari- 

 natum nee depressum, ad pedum receptionem profunde 

 utrinque excavatum ; mesosternum breve fortiter transver- 

 sum, antice truncatum ; abdomen segmentis 5 (basali et 

 apicali inter se subaequalibus) conformatum ; suturae ven- 

 trales bene impresspe ; sterna utrinque ad pedum interme- 

 diorum et posticorum receptionem late profunde excavata ; 

 lamellae abdominales segTuenti basalis apicem attingentes, 

 hujus cum margine apicali postice confusse ; tibiae et femora 

 valde compressa ; h?ec in facie inferiori ad illarum recep- 

 tionem canaliculata ; unguiculi appendiculati. 

 The combination of the following characters places this genus 

 in the group Bucolites of Dr. Chapuis, viz. : — body pubescent, 

 base of antennae exposed, elytral epipleur£e with well-defined 

 foveae. Among the Bucolites the following combination will dis- 

 tinguish it, viz. : — ventral segments only five, abdominal plates 

 incomplete, prosternum excavated to receive the front legs, tibia? 

 not dentate externally. It is also distinguished from all other 

 genera of Coccinnellidce known to me by the structure of the legs, 

 which have all their femora sulcate down the middle of their ilat 

 under surface for the reception of the tibiae, in such fashion that 

 when the femora are reposing in their cavities the tib^e and tarsi 

 are entirely hidden beneath them, and each leg exactly filling its 

 cavity, the general surface is quite level. In the example before 



