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recto, angulis posticis acute productis, margine antico utrinque obliquato, medio obtuse angulato, 

 marginibns lateralibus et antice late carioso-pimctatis, disco fere laevi, sat inaequali, medio antice 

 cariniilato, postice sulcatulo ; scutello magno, impresso, truncato; elytris elongatis, subparallelis, basi 

 protliorace haud latioribus, sutura et utrinque costulis 4 sat acutis, intervallis transversim clathratis, 

 apice rotundato; subtus cum antennis tenuissime cinereo-pubescens. — I. Viti. (M. G.) 



Par son prothorax peu attenue en avant, mais fortement prolonge aux angles posterieurs, cette 

 espece forme le passage entre les deux groupes. 



B. Prothorax subquadratus, antice haud sensim angustatus. 



5. Melnnerns qiiudraficolJis. Long. 5 mm. Elongatus, parallelus, prsecedenti sat similis, sed statura minore, 

 el3'tris atrocseruleis, protliorace subquadrato, angulis posticis nullo modo productis, margine postico 

 bisinuato, basi sat fortiter impresso, et medio sulcatulo, antice et lateribus punctis grossis sparsuto, 

 elytris magis costulatis, intervallis angustioribus, uniseriatim grosse punctatis. — Tongatabu. (M. G.) 



G. Melaneros nngnstiformis. Long. 4 mm. Elongatus, subparallelus, niger, sat nitidus, elytris atrocyaneis, 

 parum nitidis; capite inter oculos foveato, antennis gracilibus, corpore sensim brevioribus; protliorace 

 subquadrato, lateribus basi leviter sinuatis, angulis posticis extus sat acute divaricatis, margine 

 postico fere recto, antico vix obtuse angulato, medio antice breviter carinulato, postice striato, 

 utrinque transversim impresso, antice grosse punctato; scutello subquadrato, fere laevi; elytris 

 elongatis, subparallelis, apice rotundatis, sutura et utrinque costulis 4 leviter elevatis, intervallis 

 biseriatim grosse punctatis. — I. Viti; Tongatabu. (M. G.) üq, 



1. Calochromvs Guerinii M. Leay, Trans. Ent. N. S. Wales, 1872, 263. Long 8 mm. Nigro-cyaneus, 



nitidus; protliorace capite paulo latiore, subtransverso, quadrato, angulis rotundatis, linea media 

 profunde impressa, ad basin foveata, lateribus late bifoveatis, aurantiacis; scutello sub truncato, 

 elytris aurantiacis, apice cyaneo, dense subcostatis, costis alternatim majoribus. — Gayndali. (Sp. inv.) 



2. Calochromns discicollis. Long. 8 mm. Oblongus, niger, protliorace elytrisque flavo-ocliraceis, illo 



macula postica, illis macula apicaU scutelloque nigris; capite sub antennis carinato, summo striola 

 longitudinali; antennis basi approximatis, corpore vix brevioribus, compressis, articulis (2" parvo 

 . excepto) subsequalibus; protliorace transversim quadrato, angulis posticis rotundatis, medio profunde 

 canaliculato, utrinque biimpresso; scutello truncato; elytris mox post liumeros leviter anipliatis, apice 

 rotundatis, dense pubescentibus , utrinque haud 5 costulatis, intervallis longitudinaliter ac leviter 

 elevatis, interstitiis tenuiter transversim plicatulis; abdomine nigro-violaceo. — Rockhampton. (M. G.) 



3. Calochromus insidiator. Long. 8 Va mm. Elongatus, niger, nitidus, elytris cinnabarinis, dense pubescentibus ; 



capite tenuissime strigosulo, inter antennas foveato; antennis corpore paulo brevioribus, oculis 

 prominentibus ; protliorace longitudine fere duplo latiore, antice vix angustato, medio profunde 

 sulcato, utrinque late ac profunde foveato, antice transversim impresso, scutello subquadrato, nigro, 

 punctulato, elytris elongatis, apice tantum attenuatis, sutura et utrinque costulis 4 leviter elevatis, 

 intervallis dense tenuiter granulato- punctatis; subtus nitidior, nigro -violaceus; antennis basi 

 approximatis. — Sidney. (M. G.) 



G. liditis (Especes australiennes). 



I. Prothorax vix transversus, postice attenuatus, basi truncatus. 



Elytra magis convexa, abdomine paulo breviora. 



1. L. (juttulatiis. Long, l'/s — 2'/2 mm. Oblongo-ovalis, postice leviter ampliatus, fusco-niger, pubescens, 



protliorace rufo, basi pallidiore, elytris utrinque fascia media, suturam haud attingente, margine 



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