173 O dacantha, 



Habitat in aquofis, ad littora lacuum, rarius, 



Dpfcn Longitudo Brachini crepitantis, led mul- 

 to an<^uftior, linearis» Caput ma^num porre^lum, 

 in medio thorace multo latius, antice pofticeque at- 

 tenuAtam, coeruleo - virefcens nitidum" Iseve, fovea 

 obionga inter antennas utrinque; os rufo-piceum; 

 p^lpi rufo-picei apice nigri. Anteonse thorace lon- 

 giores , liliformes, nigrse, articulis tribus primis ru- 

 fo-teft.iceis. Thorax eJongatus fub-cyiindricus, 

 capite elytrisque niuito anguftior, bali apiceque 

 trimcatus, lateribus fub- marginatus, in medio non- 

 nihil dih>tatust fupra convexus, transverlim ftrigo,- 

 fus , ruiie & paice puncl:atus, linea longitudinali 

 canalicuUtus , totus cyaneo- virefcens. Scutellum 

 miiutuni oblon^^o- trianguiare teftaceum» Elytra c 

 lon^ara, thorace duplo latiora, poftcrius dilatata, 

 apice t-^unc^ta, abdomine paullo brf»viora,_fupra fub- 

 deprelTa, ruFo-teftacea nitida, obfolete punclato- 

 ft.iir*, pu^ctis minutis reinotis ; in apice macula 

 maj^na trans<'erfa commanis nigro - violacea, mar- 

 jjines non attinge.iiJ. Thorax fubtus cyaneo-vire- 

 fci^^n'*, crebfe & profunde panclHtus; pe6lus rufo- 

 teftacum iseve; abdomen cyaneum nitidam Iseve ob- 

 tufum. Ped«s elongiti tenues rufo- tefl:acei, genu- 

 bas tarfisque nigro - f ufcis. 



L E B 1 A. 



Pafffi ut m Harpcito. Maxilla cornea arcuata 

 Unuis acutijjima integcvrima^ intus ciliata. , 

 Ligtila elongata trijida^ lacinia media latiore 

 fuh' coriaeea truncataj lateralibus mmbranaceis 

 apgnftu coimiventibus obtufis, Corpus alatum 

 depy^ijum'^ tkorax cordatus-j Elytra truncata*y 

 articulus qiiartus tarfuum plirumque bilobus, 



I. L- 



