438 Mr.J.S. Baly on new Genera and Species of Phytophaga. 
from India to Southern Australia, Mr. Wallace having sent home 
many novelties from the Malay archipelago: but I also possess 
several species from the southern portion of the African conti- 
nent—thus adding another link to the evidence in favour of the 
former existence of land in the Indian Ocean. 
Genus SEBATHE. 
Corpus ovale, modice convexum, lateribus anguste marginatis. 
Caput ad oculos thoraci insertum, perpendiculare ; antennis fili- 
formibus, 11-articulatis; oculis ovatis, vix prominulis; facie inter 
antennas alte carinata. Thorax transversus, dorso non impressus, 
lateribus reflexo-marginatis. H/ytra subdepressa, confuse punctata, 
anguste reflexo-marginata ; limbo inflezo concavo, fere horizontali, 
margine exteriore deorsum paullo producto. Pedes modice robust ; 
femoribus posticis valde incrassatis, subtus canaliculatis ; ¢2biis pos- 
ticis dorso late canaliculatis, apice modice bisinuatis, spina valida 
acuta armatis; ¢arsis posticis apici tibice insertis, tibiee dimidio 
paullo longioribus ; wxguiculis appendiculatis. Prosternum oblongo- 
elongatum, lateeribus sinuatis. 
Type, Sebethe badia, Erichs. Manilla. 
The ovate, less convex, and somewhat flattened upper body, 
the narrowly reflexed lateral border of the thorax, the narrow 
also reflexed outer margin of the elytra, together with the form 
of the apex of the hinder tibiz, will serve to distinguish this 
genus from its allies. 
Genus Arsipopa, Erichs. 
Corpus ovatum aut elongato-ovatum, convexum. Caput modice 
exsertum ; facie declivi, inter oculos transversim canaliculata ; carina 
lata, vix aut modice elevata; antennis 11-articulatis, filiformibus aut 
subfiliformibus. Thorax transversus, basi utrinque longitudinaliter 
impressus, plerumque inter impressiones transversim sulcatus, late- 
tibus anguste marginatis (thoracis impressionibus interdum obsole- 
tis). Hlytra levia aut rarius rugulosa, punctato-striata, striis seepe 
plus minusve deletis. Pedes mediocres; cowis anticis transversis, 
non aut vix elevatis; femoribus posticis valde incrassatis, subtus 
canaliculatis, ¢ interdum subtus unispinosis; ¢ébéis eyusdem paris 
curvatis, extrorsum plus minusve flexuosis, dorso planig aut canalicu- 
latis, plerumque tricostatis, apice bilobatis, spina valida armatis ; 
tarsis posticis tibie apici insertis ; wnguiculis appendiculatis. 
Type, Arsipoda Chrysis, Oliv. Australia. 
It will be seen from the above diagnosis that I have been 
obliged to modify slightly the characters of this genus as ori- 
ginally laid down by Erichson, in order that it may receive 
a number of allied species which have the strongest affinity with 
Erichson’s type, and form conjointly a most natural generic 
group. I have drawn up the diagnosis of the genus from A. 
Lownei, A. Chrysis, and several other species im which all the 
characters above given are always present ; in some of the other 
