A PPENDIX— COLE OP TERA . 9 



op.) has i'ouii(k'(l liiud angles to tliu thorax, but also i"ed legs, and is not so 

 glossy in its metallic coloration as P. nitescens and P. varivpes. The form of 

 the thorax varies slightly in all the species of the genus. 



6. P. oxy nodes, n. sp. 



Hah. Machachi (9-10,000 feet); Ibarra (7000 feet); Quito (9350 feet); 

 Valley of Collanes, Altar (12,500 feet); Pichinrha (12,000 feet). Numerous 

 examples. 



Longior elytris elongatis, postice subdilatatus, nigro-feneus politus, an tennis 

 basi (cseteris piceis) palpisque rufis, pedibus nigro A-el rufo-j^iceis tibiis basi 

 pallidioribus : thorace transversim quadrato ante basin leviter siuuato, angulis 

 posticis exstantibus, rectis (interdum acutis) elytris subtiliter i)uni;tulato- 

 striatis, interstitiis jilanissimis, tertio im2)unctato. 



Long. G-7 millim. ^J ^ • 



Similar to P. niteacens in the outline of the thorax, but the liind angles 

 much more salient, never subobtuse but sometimes acute and always preceded 

 by a distinct sinuation of the lateral margins, which also are a little flattened 

 out at the angle. The legs are usually pitchy, nearly black, with l)ase of tibiae 

 paler, liut they vary to reddish. In all the varieties, however, the species 

 may Ije distinguislied fronx P. nitescens liy the aljsence of the usual discoidal 

 puncture on the third interstice, as also by the elongate elytra, the very much 

 finer stria? and darker bronzed black culuur. 



7. P. Andium, n. sp. 



Hah. Chuipupo(piio, Chindiorazo (12-13,000 feet); Tortorillas, Chim- 

 l)orazo (13,300 feet) ; Cotocachi (11-13,500 feet). Very numerous examples. 



Elongato-ovatus, castaneo-rufus, teneo-tinctus vel toto-fusco-seneus, antennis 

 basi palpis pedibusque rufis : thorace rotundato transverso, lateribus regular- 

 iter arcuatis : elytris ajiice late ol)tusis vix sinuatis, fortiter stiiatis interstitiis 

 subplanis tertio impunctato. 



Long. 7-7 A millim. ^ 5 • 



Distinguished liy its very rounded thorax, in which there is no trace of 

 hind angles. The narrow marginal rim is continued uniforndy round the 

 angles towards the scutellum, and the usual basal fovea is sul>linear, very 

 faintly iinjiressed and impunctate. The third elytiul interstice has no trace of 

 puncture in the numerous specimens I have examined, and tlie scutellar 

 striole is also wanting. 



8. P. Guachalensis, n. sp. 



Hah. Hacienda of Guachala (9217 feet). Two examples. 

 P. Andium simillimus, sed dift'ert thoracis fovea basali profunda, punctata, 

 elytrorumque striola scutellari punctoque interstitii tertii munitis. Minor, 



