4] 
E. Mesosternum distinct. 
F. Hind tibiz distinctly sulcate. 
G. Prothorax with an anterior sulcus on 
either side ri rea .  Nisotra. 
“GG. Prothorax without anterior sulci. 
H. Intermediate tibize not dentate exter- 
nally. 
I. Basal joint of hind tarsi longer than 
the two following together ... Xenidia 
II. Basal joint of hind tarsi shorter 
than the two following together... Arsipoda 
HH. Intermediate tibiz dentate exter- 
nally ... a a .... Plectroscelis. 
FF. Hind tibiz not or scarcely furrowed _...__ Crepidodera. 
EE. Mesosternum concealed... a: .... Spherophyma. 
BB. Apical joint of hind tarsi strongly swollen ... Opisthopygme. 
AA. Front coxal cavities open behind. 
B. Claws simple ... pe Aid aa ..Docema. 
BB. Claws appendiculate. 
C. Hind tibize unarmed ... 731 5: .. Lieyllus. 
CC. Hind tibize mucronate. 
D. Apical joint of hind tarsi not abnormally 
dilated. 
E. Mucro of hind tibiz normal. 
F. Antenne 11-jointed. 
G. Mesosternum distinct. 
H. Prothorax devoid of sulci. 
I. Basal joint of hind tarsi not exces- 
sively elongated. 
J. Hind tibiz rounded or truncate at 
apex. 
K. Species of large size (more than 
DT) AS 8 ... Sutrea. 
KK. Very small species (about 11.) Phyllotreta. 
JJ. Apex of hind tibize divided into 
two short lobes _ ... ... Aphthona. 
II. Basal joint of hind tarsi half as long 
as its tibia... rd ... Longitarsus. 
HH. Prothorax with a transverse sulcus 
only. 
I. Prothoracic sulcus bent hindward on 
either side to reach the base. 
J. Mucro of front tibie normal ... Hyphaltica. 
JJ. Mucro of front tibice very small 
placed above the tarsus .... Halticodes. 
II. Prothoracic sulcus entirely trans- 
verse tae ace ... Haltica. 
HHH. Prothorax with both transverse 
and longitudinal sulci. 
I. All the tibia mucronate... ... - Authea. 
II. Only the hind tibiz mucronate ..._ Lactica. 
GG. Mesosternum concealed in ... Spheroderma. 
FF. Antenne with only 10 joints ... ... _Psylliodes. 
FFF. Antenne with only 9 joints ... ... Enneamera. 
EE. Mucro of hind tibiz bifid ... Dibolia. 
DD. Apical joint of hind tarsi strongly swollen ... (Edionychis. 
*T have attributed (with hesitation) to Arsipoda one species in which 
the basal sulci are interruptedly elongated nearly to the front margin. 
