178 Arthur M. Lea : 



noticeably about base than elsewhere ; median line narrow and 

 short, but distinct ; with fairly dense, irregular punctures. 

 Elytra about four times as long as prothorax, and about base 

 with somewhat smaller and sparser punctures, becoming much 

 smaller posteriorly. Hind tibiae more than three times as 

 long as their greatest width. Length 12 — 12f, width 4^ — 

 4| mm. 



Hab. — N.S. Wales : Murrumbidgee (Macleay Museum), 

 Wagga Wagga (R. Helms) ; Victoria : Mallee (H. W. Davey). 



The largest of the genus known to me, although a trifle 

 smaller than the length (seven lines) given for wilsoni ; under 

 which name I received a specimen from the Macleay Museum. i 

 It differs, however, from that species in having the prothorax 

 distinctly transverse ; instead of subquadrate.2 and with a short 

 but distinct median line. Its head also is decidedly black. 

 The hind tibiae are narrow^er than in most species of the genus, 

 as is the case also with wilsoni, but the species I have iden- 

 tified as nigricornis, although otherwise very different, agrees 

 wath it in this respect, and the hind tibiae of (juadriroUis are 

 also so figured-'^ 



The third to tenth joints combined are about twice and one- 

 half as long as Avide. The scutellum when fully exposed is seen 

 to be transversely impressed at the base, but in this, and, in 

 fact, in most, if not all, species of the genus, it is liable to be 

 partially covered by the prothorax, so that it is of little use to 

 mention it in descriptions. 



Arthrnpter'ns latus, n.sp. 



Black, or almost black, lateral margins of prothorax, suture 

 and appendages reddish-castaneous. Discs of prothorax and 

 elytra quite glabrous, the sides and pygidiuxn with short dense 

 setae, sides of elytra with a few short hairs. 



Head with moderately dense but rather small and irregular 

 punctures; sides behind eyes scarcely tuberculate. Antennae 



1 And it ayipears to be the species several times referred to as wilsoni by Macleay, 



2 In Westwood's figure in Tlies. Ent. Oxon., the prothorax by measurement is actually 

 a trifle longer than wide. 



3 Westwood's figure of ijuadricoUis would do very well for this species except for the 

 antennae, and inter-ocular impressions. 



