408 INIr. J. S. Baly un new Gjna-a and Species of Gallerucidse. 



Mas. ffideagus apice lanceolato-ovatus, lateribus ad apicem bi- 

 sinuatis, apice ipso vix producto, truncate, recurvato. 



Fccm. Abdominis segmentum anale utiinque foveolatum, apice angu- 

 lato s.at profunde inciso ; thorace toto flavo ; .nntennis totis, femori- 

 bus dorso, tibiis tarsisque nigris. 



Var. A. (foem.). Elytris obscure nigro-purpurcis. 



Long. 5-6 lin. 



Hab. Nauta, Upper Amazons. 



This species, although of larger size and brighter coloration, 

 very closely resembles D. laticoUe, more especially in the form 

 and punctuation of the thorax ; the ? may be known by the 

 linear notch at the apex of the abdomen, the J" by the paler legs 

 and the brighter colour of the elytra. Front with a large semi- 

 ovate rugulose depression ; vertex nitidous. 



I possess three specimens of this species, one ,$ , two ? . 



Dirc3ma columUcum. 



jD. elongatum, parallelura, sordide flavum, nitidum, vertice, fronte 

 (hoc maculain flavam includente), antennis, femoribus dorso, tibiis 

 tarsisque nigris ; thorace longitudine duplo latiore, lateribus ante 

 medium modice ampliatis, disco modice sed late transversim ex- 

 cavate, crebre punctate, pube adpressa dense vestito, «trinque 

 macula ovata nigra ornate ; elytris metallico-viridibus, subopacis, 

 pube subdepressa brevi vestitis, margine suturaque flavis. 



Foam. Abdominis segmentum anale apice obtuse angulatum, breviter 

 incisum. 



Long. 6 lin. 



Hab. Bogota. 



I only know a single specimen of the present species (a ? ). 

 It may be easily separated from all its congeners by the peculiar 

 form of the thorax ; this part is less transverse, being only about 

 twice as broad as long; its sides in front are less dilated, and 

 the upper surface much less deeply excavated ; the hinder angles 

 are produced into an obtuse tooth. The elytra are much broader 

 than the thorax, somewhat depressed above. Face long, clothed 

 with pale hairs ; vertex and front black, the latter nearly plane, 

 marked in the centre with a transverse yellow patch. 



Dircema IcBtum. 

 D. elongatum, parallelum, convexum, dorso subdepressum, sordide 

 fusce-flavum, nitidum, vertice antennisque nigris, illo rugoso, his 

 basi et apice flavis ; thorace longitudine vix duplo latiore, lateribus 

 ante medium modice ampliatis, disco late transversim excavato, 

 crebre rugose, pube brevi adpressa dense vestito, sordide flavo, 

 utrinque plaga magna nigra ornate ; elytris rugeso-granulosis, 

 pube adpressa brevi fusco-fulva dense vestitis, viridi-seueis, sutura 



