BY T. G. SLOANE. 437 



The species of this group are closely allied to TV. violaceus, but 

 it has seemed best to constitute a separate group for them. 

 Table of Species. 



I.(2)Prothorax with sides not sinuate posteriorly, basal angles obtuse 



56. A 7 , colossus SI. 



2. (l)Prothorax with sides sinuate posteriori}', basal angles marked. 

 3. (6)Elytra with humeral angles strongly dentate. 



4 (5)Size large (21-25 mm.) 57. iV. australis Cast. 



5.(4)Size smaller (17-19 mm.) ..58. A 7 , cremdatus SI. 



6. (3)Elytra with basal border not dentate at humeral angles 



59. A 7 , amabilis Cast. 



56. N. colossus SI. — I took this species at Guyra and Ben 

 Lomond, in December, 1910; and I have it also from Uralla. 



57. iY. australis Cast. J ( = iY. ceneomicans Chaud.). In Chau- 

 doir's original description of N. ceneomicans, the colour is given 

 as "plerumque viridimarginata thorace laetiore, plus minusve 

 virescente;" therefore, coloured as Castelnau's Trigonotoma aus- 

 tralis, with which I believe it to be identical. Ilab. — Narrara and 

 Ourimbah (Sloane). 



Var. lapeyrousei Cast., is the form found north of the Hunter 

 River ; it has the margins of prothorax and elytra cupreous. 

 Hob. — Buladelah (Carter), Dorrigo (Tillyard). 



58. N. crenulatus SI., is a distinct species, rather than a variety 

 of X. australis Cast. The humeral angles, though strongly marked, 

 are not dentate as in A 7 , australis, it is also smaller than N. aus- 

 tralis. Length 17-19 mm. Hab. — Dorrigo (Sloane), Ebor (Till- 

 yard). 



The kingi-growp. 

 Prothorax with posterior marginal puncture on border at basal 

 angle. Elytra fully striate; third interstice 2-punctate (except in 

 N. dyscoloides Motsch., where the number of punctures varies from 

 two to four). Posterior tarsi with first joint as long as the two 

 succeeding joints together; onychium glabrous beneath. 



The species, which I have included in the kingi-growp, are not 

 at all nearly allied to one another, for I cannot suppose that the 

 characters, by which they are associated together, are of great 

 value for indicating close affinities. The Victorian species, N. dys- 



