APPENDIX— COLEOPTERA. 87 



Head impunctate ; frontal tuljercles extremely small, scarcely visible ; 

 carina short and thick ; antennte two-thirds the length of the body, black, 

 the three basal joints daik fulvous, third and fourth joints of equal length, 

 one-half longer than the second ; thorax one-half l^roader than long, the 

 sides veiy nearly straight, all the angles acute, the basal groove deep, sinuate 

 and laterally bounded by a deep longitudinal groove, surface smooth, im- 

 punctate ; elytra with the base but slightly elevated, extremely finely 

 punctured, the puuctuatiim arranged here and there in longitudinal lines ; 

 legs with a slight metallic gloss ; abdomen black. 



SeA'eral closely allied species have been described from Colombia from all 

 of which I must separate the jJi-esent insect by the almost complete want of 

 the frontal tubercles, the straight sides of the thorax in connection with the 

 very finely punctured elytra. 



Fain. GALERUCID^E. 

 LuPEROsoiiA, n. gen. 



5 . Body elongate ; eyes entire ; third joint of pali^i, robust, swollen ; 

 frontal tubercles very swollen, transverse ; antennas subfiliform, incrassate 

 tow\ards the apex, second and third joints very short, suljequal, fourth as long 

 as the two preceding joints together ; thorax square-shaped, transversely 

 depressed at the disk ; apex of the scutellum obtuse ; elytra irregularly 

 punctured, their epipleuri^e indistinct Ijelow the middle ; tiljii^e without spine, 

 the intermediate emarginate at the apex, the inner margin produced in shape 

 of a spine ; posterior first tarsal joint as long as the two following ones 

 united ; claws appendiculate ; anterior coxal cavities closed. ? . intermediate 

 tibiae without emargination ; prosternum not ^'isible. 



Tv/pe, Lwperosoma marginata. 



I am obliged to erect this genus for the reception of a small species of 

 Galeruca having the appearance of Diabrotica or Luperus, and distinguished 

 from either and other genera by the unarmed tibite, short second and third 

 joints of antennse and the other characters given above. The curious struc- 

 ture of the til)ia3 in the male is another peculiarity of the genus which would 

 enter Chapuis' 26th group, the Platyxanthitue. 



17. Luperosoma marginata, n. sp. 



Hab. The Panecillo, Quito (10,000 feet). Three specimens. 



Below black ; first three joints of the antenme and the legs obscure 

 testaceous ; above testaceous, the disk of the thorax and a broad longitudinal 

 elytral band piceous. 



