1880.] MR. M, JACOBY ON PHYTOPHAGOUS COLEOPTERA. 591 



Genus Megalopus, Fabr. 



9. Megalopus armatus, Lacord. 



I am somewhat doubtful whether I am to refer the specimens col- 

 ected by Mr. Buckley to this species, inasmuch as they differ in 

 coloration from any specimens of M. armatus I have seen ; but as 

 this difference is the only one, and the insect itself is rather variable 

 in that respect, I consider it a local variety, which differs from the 

 type as follows : there are three transverse fulvous bands at the 

 elytra in both male and female, which is the case also in M. armatus, 

 but in the female only ; the apex of the elytra in the Ecuador insects 

 is also fulvous, with the exception of a black spot in the centre ; ia 

 il/. an««iM« the apex is always black. There are eight specimens 

 before me from Ecuador which show no variation in colour ; and it 

 is therefore not improbable that they belong to another species 

 according to our present ideas. 



10. IscHioPACHYS BicoLOR, Lacord. 



11. IscHiopACHYs fulgidipennis, Lacord. 



12. POROPLEURA CCELESTINA, LaCOrd. 



13. Chalcoplacis rufiventris, Erichs. 



The antennae in the only specimen before me are entirely rufous, 

 thus differing from the type ; the elytra are dark violaceous. 



Genus Metaxyonycha, Marsh. 



14. Metaxyonycha lefevrei. 



Colaspis lefevrei, Baly. 



On account of the distinct concavity at the end of the inter- 

 mediate tibiae, I think this species ought to be classed in the genua 

 Metaxyonycha. The specimens from Ecuador do not vary from 

 Baly's type before me. 



15. Prionodera eXegans, Jacoby. 



Genus Colaspis, Fabr. 



16. Colaspis buckleyi, sp. nov. 



Ovate. Dark metallic green below, antennae and legs dark brown; 

 above dark purjilisb, the margins of the thorax and that of the elytra 

 narrowl}' metallic green. 



Length 4| lines. 



Head deeply but not closely punctured, with a central deep groove ; 

 anterior margin of the epistom.e metallic green, labrum black ; palpi 

 slender, testaceous ; antennae fulvous, joints 5-8 piceous, the apical 

 ones testaceous. Thorax about twice as broad as long, sides dis- 

 tinctly bidentate ; surface punctured like the head, impressed at 

 each side with a rather deep fovea, the ground of all the punctures 

 metallic green, this colour specially noticeable near the margins on 



