Tciicbi'ionidii3//-c;?i Australia and Tasmania. 57 



little narrower in the middle, nearly obsoletely atriatc-punc- 

 tate, pnnctures minute, intervals of the striai feebly raised ; 

 body beneath and legs dark brown, glossy, with a thin greyish 

 pubescence. Length 9 lines. 



Notwithstanding the following additions to the genus Avia- 

 ri/<j?nus*j there still remains a considerable number of species, 

 some of which, although they would be called " evidently 

 distinct," are apparently so nearly allied to others already 

 published that they could not be satisfactorily differentiated 

 without a larger suite of specimens than I possess. The varia- 

 bility of some of them (e. g. A. purjoureus) has probably led 

 to more than one being split up into so-called species. All 

 here described are, I venture to think, either more or less 

 specialized or are distinguished by very strong characters 

 from those to which they may be considered most approxi- 

 mate. 



Amarygmus cadestis. 



A. ovalis, niger, nitidus ; elytris Isete cyaneis, sat leviter seriatim 

 punctatis, interstitiis impunctatis ; tarsis tenuiter elongatis. 



Hah. Brisbane. 



Moderately oval, black, shining ; the elytra bright indigo- 

 blue, with slight violet reflections ; head flat between the an- 

 tennary tubers, separated from the clypeus by a deep broad 

 groove ; eyes approximate, entirely concealed by the prothorax 

 in repose ; antennae rather slender, the last joint irregularly 

 oblong-obovate ; prothorax small, not very broad at the base 

 or apex, the punctures almost obsolete ; scutellum small, tri- 

 angular ; elytra moderately convex, seriate-punctate, the punc- 

 tures rather fine, but well-marked, intervals of the stride im- 

 punctate ; body beneath and legs glossy black, with a brownisli 

 tinge; abdomen finely striated longitudinally; all the tarsi 

 slender, elongate. Length 5^ lines. 



A handsome species, allied to A. amethystinuSj Fab.f ; the 

 latter, however, has a dark-blue prothorax and red femora. 



Amarygmus vinosus. 



A. ovalis, viridis, nitidus ; elytris purpureis in virides mutantibus, 

 sat leviter seriatim punctatis, interstitiis subtiliter punctatis. 



Hab. Sydney. 



Moderately oval, green, shining, the elytra purple changing 



* Dalman, Anal. Entom. p. 60. M. Blessig separates the Australian 

 species of the genus, under the name of Chalcopterv.% on account of tlie 

 mandibles of the latter being entire at the end, not bifid. (Hor. Soc. Ent 

 Ross. fasc. i. p. 103.) t Ent. Syst. ii. p. 40 (Erotylns). 



E 



