256 
external margin is scarcely traceable. In the present species the 
external margin, however, is distinctly returned towards the front 
margin of the basal segment but terminates abruptly before 
reaching it. The chief differences however between these species 
and . Fourneti consist in their much greater convexity (the 
latter being an exceptionally depressed Coccinellid) and their 
much narrower and more horizontal elytral epipleure. These 
differences give them an extremely different facies but neverthe- 
less seem scarcely satisfactory characters for founding a new 
genus. Their general appearance is that of Cryptolemus 
Montrouxiert but that insect has non-foveolate epipleure, very 
different abdominal lamelle, &c. 
Queensland ; taken by Mr. Koebele at Nerang. 
B. posticalis, sp. nov. Sat late ovalis; sat fortiter convexus ; 
sat nitidus ; pube albida brevi erecta vestitus ; piceo-niger, 
capite prothoracis lateribus elytrorum parte apicali tertia 
antennis palpis pedibus abdomineque rufis, nonnullorum 
exemplorum (!immaturorum) ‘corpore subtus toto rufo ; 
capite sparsius subtilius, prothorace crebre subtilius, elytris 
crebre subfortiter, punctulatis. Long., 13 1.; lat., 14 1. (vix). 
This species is congeneric with and closely allied to the preced- 
ing (B. frater) and B. convexus, Blackb., but like them it seems 
dubiously placed when associated with 5. Fourneti, Muls. The 
bright red color of the apical third part (or even a trifle more) of 
its elytra distinguishes it at once from its described allies. Its 
puncturation is much like that of Bb. convexus from which it 
differs by its considerably more convex form as well as in color 
(sc. red head and legs, prothorax black except at the sides, elytra 
partly red). 
N. Queensland ; taken by Mr. Koebele near Cairns. 
RHIZOBIUS. 
R. Crotchi, sp. nov. Ovalis; minus convexus ; sat nitidus; pube 
fulva suberecta vestitus; rufus, elytris totis fusco-nigris ; 
capite prothoraceque subtilius vix crebre, elytris subfortiter 
sat crebre, punctulatis; prosterno medio longitudinaliter 
depresso; spatio depresso minus lato, antice angustato, 
utrinque subtiliter carinato. 
Maris segmento ventrali 5° bifoveolato, fovearum interspatio 
alterutre fovec latitudine equali. Long., 2} 1.; lat., 141. 
In my tabulation of Rhizobius (Tr. R.S., S.A., 1892, pp. 257, 
&c.) this species stands next to &. Bakewelli, Crotch., thus— 
“EEE. Elytra unicolorous . . . &. Crotchi, Blackb.” It is 
much like &. Bakewelli but besides the absence of elytral mark- 
ing it is smaller and has the fovez on the fitth ventral segment 
