of several new Species of HelceidcE. 56 



at a future period the type of a new subgenus. Its anatomical 

 details are given. 



Fig. 1 a, mandible ; 1 h, maxilla; \c, mentum, labium, and labial palpi; 

 1 d, antenna. 



Sp. 7. HeUeus simplex, Hope. (PI. VII. fig. 2.) 



Silphseformis, ater, capite subdepresso. Thorax convexus, 

 marginibus elevatis. Elytra lineis elevatis baud valde con- 

 spicuis ; per totum discum puncta sub lente confertissime 

 apparent. Corpus infra nigrum, nitidum, femoribus tibiisque 

 concoloribus tarsisque flavo-spongiosis. 



Long. lin. 8, lat. lin. 'Ig. 



In Mus. D. Hope. 



Received from Captain Roe, of the Swan River. 



Fig. 2 a, extremity of tibia, and tarsus of fore leg. 



Sp. 8. Helceus tarsalis, Hope. (PI. VII. fig. 3.) 

 Phosphugseformis, ater, antennis subpilosis et piceis. Thorax 

 convexus, lateribusexternis margine elevato conspicuis. Ely- 

 tra nigra, lineis elevatis notata, insterstitiis valde punctulatis. 

 Corpus infra nigrum tarsis pedum flavo-spongiosis. 

 Long. lin. 6, lat. lin, 3|. 

 In Mus. D. Hope. 



The above species is also from the Swan River. 

 Fig. 3 a, extremity of tibia, and tarsus of fore leg. 



9. Helceus margineUus, Hope. (PI. VII. fig. 4.) 

 Ater, antennis concoloribus ; thorace convexo, crebrissime sub- 

 tuber culato, marginibusque lateralibus rubro-piceis. Elytra 

 ternis lineis majoribus rugoso-elevatis conspicua, granulisque 

 crebris in interstitiis satis apparentibus, margineque externo 

 elytrorum rubro-piceo. Corpus infra nigrum, pedibus piceis. 

 Long. lin. 8, lat. lin. 5. 



The above three species evidently form a section. The anato- 

 mical details are given in the plate. It was received from Norfolk 

 Sound, and is, I believe, unique at present. 



Fig. 4a, maxilla; 4 6, mentum, labium, and labial palpi; 4 c, extremity 

 of tibia, and base of tarsus of fore leg. 



