I 



Australian Cwrculionidce. 4)79 



Tyrtjeosus, n. g. 



Bosfrum mediocre, paulo arcuatum ; scrohes preeine- 

 dianae. Scapus oculum vix attingens ; ftmiculus 7-arti- 

 culatus, articulis duobus basalibus longiusculis, eequali- 

 bus, CEeteris brevibus; clava distincta, late ovata. OcuU 

 subtrianguiares, paulo approximati, grosse granulati. 

 Prothorax conicus, basi bisinuatus, lobis ocularibus dis- 

 tinctis. ■ Elytra sgepe subcordata, prothorace latiora, 

 apice rotundata. Pedes validi; femora crassa, subtus 

 dentata ( S) vel subdentata ( ? ) ; tibice anticse rectse vel 

 paulo flexuosaB, intermediee et posticge breviores, com- 

 pressae, sulcatse, apicem versus dilatatae, paulo uncinatfe, 

 posticse lamina obliqua muBitte ; tarsi articulis tribus 

 basalibus simul sumptis sensim latioribus, tertio late bilobo, 

 quarto mediocre; unguiculi divergentes. Pima pectora- 

 lis profunda, pone coxas anticas protensa, apice caver- 

 nosa. Abdomen segmento secundo tertio vix vel paulo 

 longiore ; sutura prima recta. 



Limiting the old genus Cryptorhynchus to something 

 that can be definitely characterized, which is not the 

 case now, and taking the common 0. lapathi as the type, 

 then the present genus will be differentiated principally 

 by the structure of the tibise, which, however, have a 

 patch of yellow hairs outside the lower end of each as in 

 that genus, but are sulcate, with the intervals more or 

 less ribbed, and instead of narrowing to the apex, are 

 gradually broader, and have the outer margin of the 

 corbels slightly sloped inwards, without, however, their 

 becoming cavernous. 



Tyrtceosus microthorax. 



T. sat late ovatus, fuscus, squamis elongatis fulves- 

 centibus dispersus ; vertice convexo, supra oculos de- 

 presso ; rostro disperse squamoso, ultra medium nudo 

 depresso; antennis piceis, articulis tertio quartoque 

 prgecedentibus gradatim brevioribus ; oculis ( ? ) magis 

 approximatis, margine superiore recto ; prothorace crebre 

 sat rugoso-punctato, in medio carinulato; scutello trian- 

 gulare; elytris prothorace multo latioribus, longitudine 

 sesquilatioribus, fortiter sulcatis, sulcis vage punctato- 

 impressis, squamis magis condensatis, interstitiis carinu- 

 latis, humeris subcallosis; corpora infra pedibusque fuscis, 

 vage squamosis. 



Long. 4-5 lin. 



Hab. — Queensland (Wide Bay) . 



