XANTHOMA. 165 



patch at the middle and several smaller ones near the base and apex denuded of hairs ; anterior femora 

 compressed and distinctly toothed. 

 Length 2 lines. 



Hdb. Guatemala, San Geronimo {Champion). 



I should consider this insect a variety of X. guatemalensis, but for the dozen speci- 

 mens before me all showing the same differences, which are as follows : — the colour 

 of the antennae and the arrangement of the pubescence of the elytra, which is much 

 denser and leaves bare patches, as given in the diagnosis ; the general shape of the 

 insect also is less broad and more tapering towards the apex, and the punctuation of 

 the elytra finer than in X. guatemalensis; the sutural elytral patch is distinctly 

 bordered behind by two small whitish tufts of hair well visible to the naked eye. 



3. Xanthoma nigrofasciata. 



Ovate, piceous below; antennse black, the basal joint fulvous ; above fulvous ; thorax rugose-punctate, bifo- 

 veolate ; elytra finely punctured and pubescent, fulvous, each elytron with a black longitudinal band, 

 obsoletely and closely subtuberculate ; thighs finely toothed. 



Var. The elytral black band indistinct or entirely absent. 



Length 1} line. 



Head punctured and coloured as in X. tuberosa ; antennae with the last five joints thickened and of nearly equal 

 length ; thorax distinctly widened at the middle, the sides subangulate at the middle when seen from 

 above ;' surface with a distinct transverse depression near the anterior margin, and a small round fovea at 

 each side, finely rugose-punctate and pubescent ; elytra with the sides and the apex mnch deflexed, 

 surface finely covered with yellow pubescence and suberect hairs, entire disk covered with indistinct 

 tubercles, each elytron with a gradually widened black band from below the base to the apex; legs dark 

 fulvous ; femora with a short tooth. 



Hob. Guatemala, Totonicapam {Champion). 



Although this species is closely allied to the preceding one, the toothed femora, 

 bifoveolate thorax, and closely tuberculate elytra will at once separate it. 



4. Xanthoma marmorata. (Tab. IX. fig. 5.) 



Ovate, piceous below; antenna (their base excepted) and the apex of the femora black; above light brown, 

 pubescent; thorax finely rugose-punctate; elytra finely punctate-striate, each elytron with about ten 



black spots. 

 Var. Entirely light fulvous. 



H^d broad rugose punctate, closely covered with yellowish hairs ; antenna? not reaching further than the base 

 ^ of the' elytra, with the last five joints gradually but distinctly thickened; thorax subtransverse and 

 flattened the sides rounded and distinctly widened at the middle, surface with a shallow transverse depres- 

 sion parallel with the anterior margin, very closely and finely rugose-punctate, and covered with very fine 

 ellowish pubescence arranged in transverse lines, fulvous, the sides often piceous ; scutellum subquadrate, 

 dark fulvous; elytra much wider than the thorax, about three times as long, somewhat shining, the 

 & nctuation stronger than that of the thorax and arranged near the suture in subregular lines, the pubes- 



PU u,-„ e-n-hPiwt and arranged partly in rows, the colour the same as the thorax, with three trans- 

 cence turn, suDereot, *uu aax<* & ? j _ > ., . 



erse rows of black spots (when visible), one at the base, consisting of three spots, one near the middle, 

 with four obliquely placed spots, and three more spots near the apex. 



Hab. Mexico, Jalapa {Edge); Guatemala, San Geronimo, Calderas, Cerro Zunil, 



