256 



sternum. The variation in the relative lengths of th-e basal 

 two joints of the hind tarsi is not only sexual, and possibly 

 points to there being more than one species among the speci- 

 mens before me, but I can find no other character by which 

 to divide them. 



S. subserican^, sp. nov., Mas. *S'. sencanti, Er. affinis : magis 

 convexa ; capite unicolori rufo ; antennarum flabello 

 recto quam articuli 1-6 conjuncti subbreviori : elytris sub- 

 rugulose magis crebre magis fortiter punctulatis ; tarso- 

 rum posticorum articulo basali quam 2"'^ sat multo lon- 

 giori ; cetera ut ;S'. sericcms, Er. Long. 6J 1. ; lat. 3^ 1. 

 The structure of the apical ventral segment is conclusive 

 in determining the specimen before me to be a male, but the 

 straight and very short flabellum of its antennae separates it 

 strongly from the species discussed above as S. sericans, in 

 which the female flabellum is not much (though quite de- 

 cidedly) shorter than that of the present insect. The gene- 

 ral resemblance between the two is so close that it seems un- 

 necessary to describe this insect at full length ; in all respects 

 not specified in the above Latin diagnosis it agrees with par- 

 ticulars given above as characterizing *S', sericans. 



New South Wales (Mr. Sloane ; probably from Mulwala). 



S. juvenis, sp. nov., Mas. Ovata ; minus convexa: minus ni- 

 tida ; subglabra, sternis f emoribusque sparsim pilosis ; 

 nigra, sat Isete iridescens, elytris abdomine tibiisque pices- 

 centibus, antennis palpis tarsisque rufis ; antennis 9-arti- 

 culatis, articulo 6*^ perminuto, flabello quam articuli 1-6 

 conjuncti paullo longiori ; capite sat aequali, crebre (postice 

 paullo minus crebre) subtilius sat aequaliter punctulato, 

 clypeo antice late rotundato sat reflexo ; prothorace quam 

 longiori ut 7 ad 4 latiori, antice modice angustato, supra 

 fere ut clypeus (in medio nonnihil magis grosse) punctu- 

 lato, sat convexo, lateribus sat rotundatis, margine late- 

 rali antice quam in parte median a magis elevata. angulis 

 anticis parum productis vix acutis posticis (superne visis) 

 rectis baud explanatis, basi utrinque sinuata. margine 

 basali in medio subobsoleto : scutello punctulato ; elytris 

 fortiter geminato-striatis, sat fortiter minus crebre punc- 

 tulatis ; pygidio sat convexo, sat crebre sat fortiter punc- 

 tulato ; tibiis anticis extus tridentatis : tarsis posticis 

 (exempli typici) carentibus ; coxis posticis quam meta- 

 sternum multo brevioribus : segmento ventrali apicali 

 postice late emarginato leviter elevato. Long. 4 1.; lat. 

 2 1. 

 An extremely isolated species in SrifaJa, but I can find 



no character on which to found generic distinction, unless it 



