the Rutelid Genus Adorodocia. 195 
of the second species. It is pale in colour and shows no 
traces of thoracic marking; but this is evidently due to 
immaturity. 
The history of these two unfortunate species has been a 
continuous series of erroneous suppositions, and curiously 
illustrates the dangers attending systematic work undertaken 
without an abundance of materials. Having been almost 
simultaneously described without investigation of their more 
important structural features, they were soon after wrongly 
announced by M. Fairmaire to be identical. They were then 
referred by Herr Brenske to his new genus under the wrong 
name of datiss¢ma, Blanch. (an insect redescribed as Adoretus 
eunectoides, Fairm.), and the redundant name of mazima, 
Brenske. They were next declared by Fairmaire, under 
some strange misapprehension, to have no relationship to 
that genus. Finally, by myself, still supposing the two 
names to be synonymous, the male of one of them has been 
generically separated. 
In the hope of setting the matter finally at rest, I give the 
characters of each sex of both species in a tabular form, 
together with those of the genus, which was incompletely 
diagnosed from the female sex alone. 
AporopoctA, Brenske. 
Elytra furnished with a conspicuous membranous fringe. 
Prosternum strongly raised behind the front coxe, forming 
an anvil-shaped process. Mesosternum acute, not produced. 
Labrum rostriform. Labium anteriorly emarginate. 
$. Anterior tibiz long, third tooth obsolete. Larger claw 
of four anterior legs very slightly cleft beyond the middle. 
Last abdominal segment smooth, emarginate. 
@. Anterior tibiz shorter, tridentate. Claws less unequal, 
larger claw of four anterior legs equally cleft atthe tip. Last 
abdominal segment rugose, more or less cleft at the hind 
margin. 
Tlytra flavous; head, thorax, and scutellum in a 
ereater or less degree darker. Clypeus semi- 
circular, eyes prominent. Pronotum marked 
Witla placklateralelimery: sacs. ira seat kes strigatus, Waterh. 
6. Elongate. Eyes more prominent. Prono- 
tum less convex. (enigma, Arrow.) 
Q. Ovate. Eyes less prominent. Pronotum 
convex. 
Castaneous, uniformly coloured above. Pronotum 
marked with a black lateral line and an inner 
spot, lateral margin strongly thickened...... vittaticollis, Fairm. 
3. Rather elongate. Pronotum flat. 
2. Broader. Pronotum slightly convex. (maxi- 
ma, Brenske.) 
