Revision of the Australian Aphodiides. 167 



uiiuus elongatoj elytris striatis (striis leviter crenulatis), inter- 

 stitiis modice latis antice modice convexis postice anguste 

 carinatis, spina hunierali parva; metasterni disco subtilissime 

 sparsini punctulato; tarsoruin posticoruin articulo basali valde 

 elongate. 



Long. 14 1. Lat. 1 1. 



Resembles O. tweedensis, Blackb., in form but is even wider 

 and more convex; its surface is very manifestly less iiitid; its 

 pronotum considerably less coarsely punctulate; its elytral striae 

 less strongly crenulate; its elyti'al interstices narrower and more 

 convex; especially near the apex. 



N. S.Wales; Hillgrove (Mr. Lea). 



A. MACILENTUS, sp. nov. 



Subparallelus ; sat elongatus ; minus convexus ; fere glaber ; 

 subnitidus ; niger, palpis antennis tarsisque ferrugineis ; capite 

 (parte basali excepta) fere laevi, antice emarginato, sutura cly- 

 peali nulla vel vix perspicua ; prothorace quani longiori ut 7 ad 

 5 latiori, subquadrato, supra inaequaliter sat sparsim sat grosse 

 (antice vix minus fortiter, latera versus crebre sat aequaliter) 

 punctulato, lateribus leviter arcuatis, angulis omnibus obtusis, 

 basi infra superticiei planum iiiarginata ; scutello triangulari 

 modice elongato ; elytris crenulato-striatis, interstitiis minus latis 

 antice sat convexis postice anguste carinatis, spina humerali 

 parva ; metasterni disco sublaevi vel puncturis rarissimis im- 

 presso ; tarsorum posticorum articulo basali valde elongato. 



Long. 2 1. Lat. ~ 1. 



Near A. nudus, Blackb., but readily distinguishable by the 

 puncturation of its pronotum becoming close and even on the 

 extra-discal portion. 



N. S. Wales ; Forest Reefs (Mr. Lea). 



A. spissus, sp. nov. 



Minus angustus ; minus parallelus ; sat convexus ; fere glaber; 

 subnitidus ; niger, clypei margine palpis antennis pedibusque 

 rufis ; capite postice subfortiter (latera versus crebre leviter) 

 punctulato, antice emarginato ; sutura clypeali hand perspicua ; 

 prothorace quam longiori ut 3 ad 2 latiori, subquadrato, supra 

 sat aequaliter (basin versus magis grosse minus crebre) crebre sat 



