190 



epipleurse antice sat latjie, elytrorum in parte quarta postica 

 obsoleti^, baud perspicue f oveatt« ; prosternum in medio 

 longitudinaliter depressuni (spatio depresso utrinque carinato, 

 angusto, abasi ad apiceni angustato, apice acuto); mesosternum 

 sat magnum, antice leviter emarginatum ; abdomen 

 segmentis 6 conformatum ; sutune ventrales bene impressse ; 

 lamellte abdominales segmenti basalis apicem fere attingentes, 

 integral ; tibite et femora sat fortiter compressae ; antennae 

 articulis 10 conformatae, minus breves; corpus pubescens ; 

 unguicula appendiculata. 



The insect for which I form this genus differs from nearly all 

 hitherto described Australian pubescent CoccinellidfH by its 

 antennte of ten clearly defined joints. The basal two joints are 

 large and dilated, 3 much narrower and rather elongate, 4 

 evidently shorter than 3, 5 and 6 a little shorter than 

 4, 7 to 9 gradually longer and wider, 10 pointed. From 

 Cryptolcemiis, which has very similar antennae, it may be 

 at once distinguished by the entirely different structure of the 

 prosternum and claws, by the Avell defined sixth ventral segment, 

 and the greater breadth of the elytral epipleurte in front. The 

 mesosternum is remarkably like that of Cryptohtimis, near which 

 genus I think this one should certainly be placed. 



.S. difficilis, s'p. nov. Satiate ovalis ; minus convexus ; nitidus ; 

 dense albido-pubescens ; subtilius sat crebre punctulatus ; 

 rufo-ferrugineus ; capite postice, prothoracis disco, elytris 

 (apice obscure rufo excepto), prosterno medio, mesosterno, 

 metasterno, et segmento ventrali basali medio, nigro-aeneis. 

 Long., 21. (vix); lat., 1|-1. 



The superficial resemblance of this insect to some of the Aus- 

 tralian species of Rliizohius is very remarkable. Having only a 

 single specimen I am unable to ascertain certainly whether the 

 anterior cotyloid cavities are open behind, but as far as I can see 

 they are not. The prothorax is about twice as wide as long 

 down the middle, its anterior margin feebly concave but rather 

 strongly sinuate behind the eyes, the base about half again as 

 wide as the front margin, the sides gently arched, the front 

 angles rather prominent but not sharp, the hind angles well 

 develojDed and gently obtuse. The whitish pubescence is dense 

 uniform and rather woolly looking over the upper surface — it is 

 mixed with a few erect longer ferruginous hairs. The punctura- 

 tion is a little stronger on the head and a little closer on the pro- 

 thorax than on the elytra ; it does not very nearly resemble the 

 j)uncturation of any other of the common s^Decies known to me, 

 being (on the elytra) about as close as in B. ventralis, Er., but 



