1154 COLEOPTERA 



joints strongly transverse ; terminal joints large, obtuse ; epistome 

 very deeply notched in front, so as to be quite bilobed. Thorax 

 about one-third broader than long, its surface with distant, exces- 

 sively minute punctures. The serial punctures of the elytra are 

 fine, but distinct, and very regular ; there is a short series on the 

 sutural interval near the scutellum ; the interstices impunctate. 

 The tarsi are short and thick, and remarkable on account of their 

 freedom from pubescence or setae, all that can be detected being a 

 very few placed on the inner face of the tarsus, not on the sole. 

 The only example found is no doubt a male ; it has the hind tibiae 

 denticulate internally below the knee, and the hind margin of the 

 posterior femora and trochanters set with flavescent pubescence. 



Picton. Helms. This is an interesting insect on account of the 

 peculiar tarsi : the only other species of the genus has much more 

 slender feet, with a little pubescence beneath. 



Group-CNODALONID^l. 



Artystona. 



2044. A. obSGUra, n.s. (Sharp ; Trans. Boy. Dub. Soc., 1886, 

 p. 411.) Elongata, convexa, nigricans, antennis pedibusque rufis ; 

 capite thoraceque crebre subtiliter punctatis, subopacis ; elytris sub- 

 tiliter striato-punctatis, interstitiis versus apicem vix tuberculato- 

 elevatis. 



Long., 12nim. 



The species of this genus are apparently very close to one another 

 in their external characters, but appear to be subject to very little 

 variation. A. obscura is about as large as A. wakefieldi, but broader 

 and less linear, and is readily distinguished by the more opaque and 

 less punctate head and thorax, and the very slight development of 

 the elytral tuberculation. 



Bealey. Helms. A. wakefieldi occurs at Christchurch (Wake- 

 field), Dunedin (Hutton), and Picton (Helms). 



2045. A. COllaris, n.s. (Sharp; Trans. Boy. Dub. Soc., 1886, 

 p. 412.) Elongata, nigricans, vix nitida antennis tarsisque rufescen- 

 tibus ; capite thoraceque subtiliter minus crebre punctatis, subopacis, 

 hoc ante basin in medio transversim depresso, elytris striato- 

 punctatis, interstitiis apicem versus parum tuberculato-elevatis. 



Long., 13mm. 



This is readily distinguished from A. wakefieldi by the more 

 obsolete sculpture and the less shining surface. In these respects it 

 is nearer to A. obscura; but that is more convex and less elongate, 

 and has no trace of the depression at the base of the thorax. 



Dunedin. G. Copland. 



2046. A. obSOleta, n.&. (Sharp ; Trans. Boy. Dub. Soc., 1886, 

 p. 412.) Elongata, nigricans. pedibus piceis, antennis tarsisque rufis ; 



