Revision of the Australian Aphodiides. 173 



also the narrow elongate scutellum. The apex of the pygidium, 

 when tlie abdomen is not shrunk or unduly extended, is dis- 

 tinctly visible but only to a small extent. The length of the 

 basal joint of the hind tarsi varies (as in the acknowledged 

 sub-genera of Psammodius) but is never greater (as it is in 

 Ataenius, etc.) than the width of the apex of the hind tibiae. 

 The only character that causes me any hesitation in placing the 

 following species in Psammodius is the extreme feebleness of the 

 inequalities on the surface of their pronotum, but (as noted 

 above) there is already at least one species of Psammodius 

 (recognized by Harold) in which the sulci of the pronotum are 

 more oi- less obsolete. The eyes are normal, and very distinctly 

 granulate. 



Ps. AUSTRALICUS, Sp. nOV. 



Ovatus; sat latus; convexus; sat nitidus; sat glaber (sed 

 prothorace setulis fimbriate; rufo-brunneus; capite granulate, 

 antice late subemarginato; prothorace quam longiori ut 3 ad 2 

 latiori, supi'a grosse minus inaequaliter minus sparsim (sed prope 

 latera sparsim) punctulato, latera versus transversim (pone 

 marginem anticum leviter, prope medium obsolete) breviter 

 sulcato, lateribus arcuatis, angulis omnibus obtusis, basi haud 

 marginata; scutello triangular! modice elongate; elytris crenulato- 

 striatis, interstitiis vix convexis vix perspicue punctulati-s, spina 

 humerali minuta; metasterni disco laevi; tarsorum posticorum 

 articulo basali quaia tiljiae latitudo breviori. 



Long. If 1. Lat. 4 1 (vix). 



N. S. wiles (from Mr. Lea). 



Ps. OBSCURIOR, sp. nOV. 



Subovalis; minus latus, sat convexus ; sat nitidus ; fere glaber; 

 nigro-piceus, palpis antennis capite antice pedibusque rutis; capite 

 granulate, antice emarginato ; prothorace quam longiori fere ut 4 

 ad 3 latiori, supra in parte pestica lengitudinaliter sulcato, acer- 

 vatim grossissime punctulato, latera versus transversim (pone 

 marginem anticum profunde, prope medium vix perspicue) sul- 

 cato, lateribus paruni arcuatis, angulis omnibus obtusis, basi haud 

 marginata ; scutello triangulai-i sat anguste elongate ; elytris stri- 

 atis, striis profunde crenulatis, interstitiis sat angustis sat con- 



