318 F. r. PASCOE 



410. C. thoracicus, n. sp. Elorigatus suliparallehis convexiusculus, niger 

 nitidus, l)asi elytroniiii rufo-testacea; rostrum l)reve latum depressum, 

 subtiliter punctatum; anteiuiaj nigricaritcs: protliorax ol)longus validus, 

 basi paulo angustior, subtiliter romote punctatus, regione scutellari exca- 

 vata et punctis sex maximis impressa; seutellum nigrum ; elytra prothorace 

 in medio vix latioi*a, striato-punctata, punctis oblongis, striis basi profimde 

 impi'essis, interstitiis jmulo clevatis, minutissime jmnctatis; metasternum 



segmentisque duobus basalibus abdominis luteis; pedes validi, nigri. Long. 



6 mm. 



Hah. Fly River, L. M. D'Albertis. 



A stout convex species with a peculiarly sculptured protliorax. 



Isotrog-us. 



WoLLASTON, 1. c. pp. 183-566. 



411. I. bilineatus, n. sp. Elongatus, subellipticus, niger nitidus, de- 

 pressus; caput rostrumque fere iinpunctata; antenna^ i^iceaa; funiculus me- 

 diocriter elongatus; protliorax triangulari-oblongus, basi fortiter bisinuatus, 

 in medio planatus, jjunctis magnis in lineis duabus seriatim notatus, ad 

 latera i)unctis minoribus dispersus ; elytra substriato-punctata ; punctis 

 parvis remotis, interstitiis levigatis; jiedes picei. Long. 4 mm. 



Ilab. Somerset, L. 31. D'Albertis. 



The principal characters by which Isotrogus in differentiated 

 by Wollaston from Cossonus are hardly applicable to this se- 

 cond species ; it is not « so extremely flattened » , the scape is 

 less llexuous, and the funicle is of normal length. The genus 

 might well be united to Cossonus. 



Psilotrog-us. 



Cossono aff. sed capite angusto in rosti'O continuato, hoc parallelo et 

 basi crassiore; scrobes oculos attingentes tum infra currentes. 



This genus is differentiated from Cossonus by the form of the 

 rostrum, and by the scrobes, not passing directly beneath, 

 where they nearly meet, but, forming an angle at the point 

 of the insertion of the antennae, and there continued backwards 

 to the lower margin of the eye, while above, by its gradual 

 widening, it approaches the anterior margin. 



412, p. extensus, n. pp. Angustus, de])ressu3, niger nitidus; caput et 

 rostrum sejunctiin punctata, hoc paulo arcuatum, antenna) picea), in medio 



