Relationships existing amongst Natural Objects. 415 



Thorax trans versus, anticè angiistior, postice elytrorum baseos latitudine, sinu 

 lato antioo pro receptione capitis, margine postico ferè rectè truncate 

 angulis anticis acutis, posticis subrotundatis ; marginibus lateralibus 

 rotundatis, tenuissimè inarginatis : prosternum inter pedes anticos acute 

 protensum : metasternum breve. Scutellum parvum, subtriangulare. Elif- 

 tra oblongo-sul)quadrata, depressa, postice paull6 angustiora, basi tho- 

 racis partis posticoe latitudine, et ad eum arete applicatâ, tenuissimè 

 niarginata, apicibus oblique subtruncatis, abdominis apicem hand tegen- 

 tibus. Pedes breves, femoribus magnis, ovatis, compressis, subtùs (pro 

 receptione tibiarum) carinatis, tibiis gracilibus, anticis intiis apicem 

 versus emarginatis, tarsis subsetaceis, articulis simplicibus, anticis sub- 

 tùs (in uno sexu saltem) série duplici pulvillorum minutissimorum ; un- 

 guibus duobus. 



Spec. 1. Sphallomorpha decipiens. 



Nigra, Isevis, subnitida ; ore, antennis pedibusque luteo-piceis, thoracis elytro- 

 rum que limbo tenui-luteo. 

 Long. corp. 4 lin. 

 Habitat in Nova Hollandiâ. 

 In Mus. nostr. 



Hoc genus a Pseudomorphd difFert habitu latiori et magis depresso, et prœ- 

 sertim structura juguli, menti et palporum labialium, atque ab Adelotapo 

 antennis filiformibus, mento et palpis. 



I am further enabled by the kindness of the Rev. F. W. Hope to add to the 

 interest of this communication by the introduction of a figure and description 

 of another New Holland insect, which in some respects appears to be interme- 

 diate between Pseudomorpha and Sphallomorpha, and of which tiie following 

 are the characters. 



SiLPHOMORPHA. 



Corpus oblongo-ovatum, subdepressum ; thoracis elytrorumque lateribus sub- 

 continuis, subreflexo-marginatis. 



Caput, antennœ, mandibulœ, maxillœ, et palpi maxillares fere ut in Sphallo- 

 morpha. Labrum latum, breve, margine antico in medio parùm emar- 



VOL. XVIII. 3 I 



