THE CANADIAN ENTOMOLOGIST. 



297 



18 (19) Medio-longitudinal carina of face furcate near lower 



margin of eyes, base of face narrower than apex, 

 lateral margins slightly arcuate; lateral carina^ of 

 pronotum divergingly curved posteriorly, not reaching 

 hind margin Perkinsiella. 



19 (18) Medib-longitudinal carina of face furcate at extreme 



base, lateral margins subparallel, lateral pronotal 

 carinse at first sharply diverging, then converging, 

 reaching hind margin (in some species the posterior 

 portion from bend is obsolete) Stobcera, 



20 (7) Antenna? terete or but very little flattened. 



21 (24) Face and notum with numerous "pits." 



22 (23) Face with two medio-longitudinal carinse Achortile. 



23 (22) Face with one medio-longitudinal carina Laccocera. 



24 (21) Face and notum without "pits." 



25 (26) Anterior and intermediate femora and J Phyllodinus*. 



tibiae compressed and foliaceous [Platybrachus. 



26 (25) Legs simple, not foliaceous. 



27 (30) Only one carina (median) on pronotum (all carinse on 



head very faint; one medio-longitudinal carina on 

 face) . 



28 (29) Antenna? very short, first joint not longer than 



second Upachara. 



29 (28) Antennae long, first joint much longer than 



second Hapalomelus. 



30 (27) Two or three carinae on pronotum. 



31 (32) Lateral edges of pronotum carinate; **a single medio- 



longitudinal carina on vertex t Pundoluoya. 



32 (31) Lateral edges of pronotum not carinate. 



33 (34) Vertex with a transverse ridge between eyes Toya. 



34 (33) Vertex without a transverse ridge between eyes. 



35 (40) Carinae of head very indistinct, vertex little broader 



than long. 



■"Some species of Phyllodinus have obscure pits and some Achortile have 

 slightly flattened legs, but in species I am acquainted with the latter has an 

 angular emarginated posterior margin to the pronotum and in the former it is 

 not angularly emarginated. 



**According to Distant's figure and description. 



fAccording to Melichar's figure. 



