Mr. J.S. Baly on new Genera and Species of Phytophaga. 441 
behind, their apex acutely rounded; above convex, impressed 
longitudinally within the humeral callus; whole surface very 
finely punctured; the usual striz are distinct and visible along 
the anterior half of the suture, and on the anterior portion of 
the outer disk ; over the remainder of the surface, they are en- 
tirely obsolete. Hinder thighs strongly thickened. 
Arsipoda MacLeayt. 
A, late ovata, valde convexa, crassa, czeruleo-viridis, metallica; an- 
tennis (basi obscure fulva excepta), pedibus quatuor anterioribus, 
tibiis tarsisque posticis piceo-nigris, abdominis apice rufo-fulvo ; 
thorace tenuiter punctato, basi utrinque profunde impresso, sulco 
transverso integro, medio sinuato ; elytris fortiter punctato-striatis, 
striis usque ad apicem distinctis, ad latera et apicem versus leviter 
sulcatis, interspatiis subremote punctatis, planis, ad latera et ad 
apicem convexiusculis ; tibiis posticis leviter extrorsum flexis. 
Long. 2 lin. 
Hab. Sydney. 
Short, thick ; facial ridge moderately raised and thickened ; 
front smooth, not depressed, its lower part very obsoletely punc- 
tured ; facial groove very deeply impressed, facial plates narrow, 
almost linear; antennze half the length of the body, moderately 
robust, nearly filiform, beimg scarcely thickened towards their 
apex. Thorax more than twice as broad as long, sides obliquely 
converging and slightly rounded from base to apex, anterior 
angles obliquely truncate, incrassate; surface finely but not 
very closely punctured ; base impressed on either side with a 
deep, slightly curved, longitudinal groove; transverse groove 
distinct, its middle sinuate and obtusely angled towards the 
basal margin. Elytra broader than the thorax, ovate, their apex 
rounded ; upper surface impressed just within the humeral 
callus with an ill-defined curved groove, which bounds the lateral 
margin together with the outer half of the hmder border of the 
basilar space; strie deeply punctured, suleate on the outer 
border and towards the apex; interspaces distinctly punctured, 
plane, obsoletely convex towards the sides and apex. 
Arsipoda Lownet. 
A. crassa, ovata, obscure viridi-zenea, nitida; capite thoraceque cu- 
preis, violaceo micantibus ; antennis nigris, articulis 3"° et 4to 
obscure fulvis; thorace tenuissime punctato, basi utrinque pro- 
funde impresso, distincte transversim suleato ; elytris regulariter 
punctato-striatis, striis fortiter impressis, ad latera et apicem 
versus sulcatis, interspatiis tenuiter punctatis, antice planis, postice 
et ad latera convexiusculis ; tibiis posticis extrorsum vix curvatis. 
Long. 23 lin. 
Hab. Sydney. Collected by Mr. Lowne. 
