1907.] SPECIES OF CRYPTOCEPHALmE BEETLES. 851 



portion. Scutellum broadly subquadrate, punctured and pubescent 

 at the base. Elytra broadly subquadrate, punctured in closely 

 approached irregular rows, the interstices finely wrinkled, black ; 

 the shoulders with a large subquadrate flavous patch, the apex 

 with a round smaller spot. Below and the legs black ; the anterior 

 femora thickened, longer than the others, their tibiae curved. 

 Ilab. Cordoba, Argentine Republic. 



Metallactus capitatus, sp. n. 



Head and anterior femora purplish blue ; scutellum black ; 

 thorax and elytra dark fulvous, the latter strongly punctate- 

 striate ; body below bluish, closely silvery pubescent ; tibia3 and 

 tai'si fulvous. 



Length 6 millim. 



Rather large and robust ; head with a longitudinal central 

 groove, the lower portion distinctly pimctured ; labrum black ; 

 eyes rather closely approached ( ? ), triangularly notched at lower 

 portion ; antennae slender, bluish, lower five joints fulvous, third 

 and following two joints very elongate. Thorax more than twice 

 as broad as long, sides strongly subangulately rounded at middle, 

 constricted in front and at base ; disc with a rather broad trans- 

 verse depression near the posterior angles, the middle finely and 

 remotely, the sides more strongly punctured. Scutellum finely 

 punctured, scarcely longer than broad, black. Elytra scarcely 

 wider at base than the thorax, the humeral lobes strongly pro- 

 duced ; surface with very deep and irregular rows of punctures, 

 these much finer and more regular below the middle ; interstices 

 at base somewhat convex. Body below strongly inflated ; legs 

 elongate ; anterior femora thickened, entirely, intermediate 

 femoi'a partly, blue ; prosternum subquadrate, slightly caiinate 

 at middle. 



JIab. Espiritu Santo, Brazil. 



Quite distinct in coloration than any of the described species, 

 the head purplish, the elytral puncturation deep aiid strong, the 

 entire upj^er surface unicolorous. 



Metallactus semipurpureus, sp. n. 



Obscure purplish ; thorax very finely punctured ; elytra 

 strongly punctate-striate, the humeral lobes and a I'ound spot 

 at apex of each elytron pale fulvous. 



Length 5 millim. 



Head with a few punctures near the eyes, the latter rather 

 closely approached, large, with a small notch at lower poition ; 

 anterior part of head rugosely punctured ; antennae slender, black, 

 lower six joints fulvous, basal joint black above. Thorax twice 

 as broad as long, sides rounded near base, gradually narrowed 

 anteriorly ; surface very finely and remotely punctured at disc ; 

 sides more closely punctured, with a rather deep transverse 

 depression near base ; median lobe but very slightly produced. 

 Sciitellum subquadrate, apex broadly truncate, surface longi- 



