840 THE LATE MR. M. .TACOBY OX NEW [NoV. 26. 



and strongly widened, elongate, the terminal joint nearly extending 

 to the apex of the elytra. Thorax about one half broader than 

 long, strongly nari"Owed in front; sides rounded; disc very convex, 

 bounded at the sides by a deep, nearly semicircular groove, which 

 surrounds the anterior angles, but is continued at the base to the 

 scutelium ; surface entirely impunctate ; extreme basal margin 

 black. Scutelium narrowly elongate ; its apex truncate, impunc- 

 tate. Elytra with strongly pronounced epipleural lobes, slightly 

 narrowed posteriorly ; the shoulders tuberculiform ; the surface 

 ■finely punctate-striate, the punctures at the sides rather stronger; 

 interstices flat and impunctate. Under side slightly paler ; legs 

 robust ; tarsi very broad. Presternum widened posteriorly ; the 

 margin slightly emarginate or concave. 



Hah. Jalahy, Prov. Goyaz, Brazil. 



This is a very aberrant species, and recalls an Australian 

 representative of the genus rather than a New \^^orld form ; I 

 know no similarly structured species from that region. I received 

 a specimen from M. Don elder at Paris, and I have no reason 

 to doubt the correctness of the locality. The strong thoracic 

 sulcus, dilated antennse, and structure of the eyes characterize 

 the species most decidedly. 



Cryptocephalus semiopacus, sjd. n. 



Head, antennae, thorax, and legs fulvous, elytra dark blue ; 

 thorax finely rugosely punctured ; elytra strongly punctate-striate, 

 the interstices finely transversely wrinkled ; breast and abdomen 

 black. 



Length 4 millim. 



Elongate and parallel ; the head very deeply, subconfluently 

 punctured, fulvous ; eyes very broadly, subquadrately emarginate ; 

 clypeus impunctate, transverse, well separated, its anterior edge, 

 as well as the labrum, piceous ; antennse extending to the middle 

 of the elytra,, flavoiis, terminal joints fulvous, third and fourth 

 equal, fifth longer, the following gradually shortened. Thorax 

 twice as broad as long, distinctly narrowed anteriorly ; sides 

 feebly rounded ; surface fulvous ; the postei^or angles flavous, 

 strongly produced ; entire disc finely rugosely punctured. Scu- 

 telium black, short. Elytra elongate, finely punctate-striate near 

 the suture, the first three or four rows regular and well separated, 

 the outer rows much more closely approached and irregular, the 

 last two rows with deeper punctures at the basal portion ; all the 

 interstices extremely finely transversely wrinkled, of silky 

 appearance. Pygidium black, closely punctured ; legs fulvous, 

 rather slender ; uiider side black. Prosternum fulvous, elongate, 

 narrowed at middle ; posterior margin with strongly produced 

 angles. 



Hah. Mexico. 



This is a well marked and distinguished species, of which I know 

 a. single specimen only, received from M. Donckier at Paris, The 

 coloi-ation and characteristic sculpturing of the elytra difter from 



