Australian and Tasmanian Cryptocephalides. 349 



N.N. Scutellum notched at base.* 

 0. Scutellum strongly transverse, 

 its apex truncate. 



p. Elytra pallid Or. rutilans, n. sp, 



}^.p. Elytra green or blue .... Gr. cunsois, Boi. 

 p.p.p. Elytra reddish with two black 



conjoined fascial .... Cr. comptus, n. sp. 

 0.0. Scutellum as long as wide or 

 longer, if transverse then 

 more or less triangular. 

 P. Prothorax and elytra entirely 



black Id. atra, Snd. 



P.P. Prothorax and elytra not both 

 black. 

 Q. Scutellum much longer than 



wide Lo. ohtusiis, Chp. 



Q.Q. Scutellum at most just per- 

 ceptibly longer than wide. 

 R. Upper-surface not at all red. 

 s. Elytra densely punctate, the 

 punctures frequently con- 

 fluent Ch. viridis, Snd. 



s.s. Elytra moderately punctate, 

 the punctures seldom con- 

 fluent ........ Lu. suhvirens, Chp. 



R.R. Prothorax or elytra more or 

 less red. 

 S. Elytra not at all red.f 

 t. Elytra bright metallic green 



or blue Gr. tricolor, Fab. 



t.t. Elytra deep, pure black. 

 n. Prothorax almost entirely 



black Lo. dolens, n. sp. 



1I.U. Prothorax red. 



V. Four front femora black . . Lo, castor, n. sp. 

 1'.!'. Four front femora reddish . . Lo. conjugatus, Chp. 

 t.t.t. Elytra, if black, with a purp- 

 lish-bluish or greenish gloss. 



* In Lo. sidivirens, Chp., and Lo. gravatus, Chji., the scutellum 

 is just perceptibly notched ; in Lu. piceitarsis, Clip., the notch is 

 occasionally fairly distinct, but it is usually traceable with difficulty. 



f In the male of Lu. piceitarsis, Chp., however, the apex is some- 

 times feeblv diluted with red. 



