253 



extus 3-dentatis ; tarsis posticis subtus seriatim setulosis, 

 articulo basali quam 2"^ breviori. 

 Maris antennarum fiabello quain articuli 1-6 conjuncti paullo 

 longiori, feniinse articulis 2-6 conjunctis sat aequali ; maris 

 quam feminae tarsis manifests longioribus ; maris carina 

 pygidiali parum perspicua in longitudinis medio sita, 

 feminae bene elevata basali ; maris segmento ventrali 

 apicali postice minus late emarginato et minus elevato, 

 feminae late subtruncato manifeste elevato. Long., 5-5^1.; 

 lat., 2i-2f 1. 



The sexual characters in this species are unusually well 

 marked and numerous. The lateral outline of its prothorax 

 resembles that of -S'. hospes, Blackb. Its small size distinguishes 

 it from its near allies. The basal joint of its hind tarsi, not- 

 ably shorter in both sexes than the second joint, is also very 

 distinctive ; also the hind angles of its prothorax (viewed from 

 above), sharply rectangular or even subacute. The hind 

 coxae are evidently, but not much, shorter than the metast«r- 

 num. 



North Queensland (Mr. R. C. L. Perkins). 



S. amhigua, sp. nov. Ovata ; convexa ; robusta ; minus nitida; 

 subglabra ; picea vel rufo-picea, pruinosa vix iridescens ; 

 antennis 9-articulatis ; clypeo sat nitido, crebre leviter 

 ruguloso, in medio sat gibbo, antice rotundato fortiter 

 reflexo ; fronte subtiliter minus crebre punctulata, mod ice 

 convexa; prothorace quam longiori ut 7 ad 4 latiori, 

 antice sat angustato, supra sat subtiliter sat crebre sub-. 

 obsolete punctulato, lateribus parum arcuatis, margine 

 laterali sat aequaliter elevato sed sulco submarginali 

 antice nonnihil dilatato, angulis ant-icis acutis posticis 

 leviter obtusis vel obtuse rectis hand explanatis, basi 

 utrinque sinuata, margine basali in medio obsoleto ; scu- 

 tello punctulato ; elytris minus fortiter geminato-striatis, 

 sat crebre minus profunde nee subtiliter punctulatis ; 

 coxis posticis quam metasternum parum brevioribus ; 

 pygidio crebre parum rugulose nee subtiliter punctulato 

 sat convexo ; tibiis anticis extus 3-dentatis ; tarsis posticis 

 subtus seriatim setulosis, articulo basali quam 2"'^ sat 

 longiori. 



Maris antennarum flabello articulis 1-6 conjunctis sat aequali- 

 bus feminae quam articuli 2-6 conjuncti vix longiori ; 

 maris quam feminae tarsis posticis paullo longioribus ; 

 maris segmento ventrali apicali postice emarginato et 

 elevato, feminae subsinuatim truncate nee elevato. Long. 

 7-8i 1. : lat. 3|-4 1. 

 This species bears some resemblance to S. sericans, Er., 



