Genus Mechidius of Mac Leay. 81 
the head and thorax are considerably broader, as are also the 
legs. The upper surface of the body is opaque. 
The sides of the thorax are regularly rounded, and slightly 
serrulate; the posterior angles are not emarginate, but are very 
obsoletely obtusangular; they are marked on each side with 
several transverse impressions; the anterior tibia have three 
obtuse teeth on the outside, the first of which is near the middle 
of the tibize; the lobe of the hind tibiae is very prominent, and 
truncate at the tip; the antennez are castaneous brown. 
Mr. Kirby’s description of the impressions on the body is as 
follows: “ Corpus punctis pupillatis et centro cblongo eminen- 
tibus pallidis, subcinereum et scabrum.” 
These punctures on the elytra (of which there are about eigh- 
teen strize in each) are nearly round and cinereous, each with a 
raised oblong centre, the space between each puncture being also 
elevated, 
The specific name of spurius being applicable to the insect so 
long only as it remained in the genus 77ox, to which it does not 
belong, I have ventured, in its stead, to designate it with the 
name of the venerable author by whom it was first made known. 
Sp. 2. Mechidius Hopianus, W. (PI. V. fig. 3.) 
M. oblongus, scaber, nigricans, opacus, setulis luteis (pre- 
sertim thorace) subcinereus; thoracis angulis posticis valde 
emarginatis. 
Long. corp. lin. 53. 
Habitat in Nova Hollandia? In Mus. D. Hope. 
Oblongus, depressus, opacus; elytris vix thorace latioribus, 
lateribus fere parallelis. Caput transversum, punctatum, se- 
tosum, margine reflexo, antico parum emarginato, laterali vix 
bisinuato, Antenne castaneee. Thorax margine antico valde 
emarginato, lateribus rotundatis, angulis posticis valde emar- 
ginato-excisis, dorsi medio parum impresso, lateribus haud 
transverse impressis ; tuberculis minutis, transverso-curvatis, 
elevatis, nitidis, scaber. Elytra oblonga; thorace parum la- 
tiora, lateribus fere parallelis, opaca, fusca; singulo striis 18 e 
punctis (circiter 40) ovatis parum impressis formatis, spa- 
tiis inter puncta elevatis nitidis ; setulaque brevi crassa, lutea, 
decumbenti, in singulo puncto posita. Pedes nigricantes. 
[Fig. 3a, underside of head; 3b, labrum; 3¢ and 3d, mandible in different 
positions. | 
VOL. IV. G 
