644 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lu 



almost half as long as labial I, not as high as labial II; labium reaching 

 middle of mesosternum. Labial segments: I, 0.12; II, 0.14; III, 0.20; 

 IV, 0.13. 



Pronotum: Length two-thirds width, 0.63:0.90; anterior margin 

 very feebly doubly emarginate, cupped behind eyes; lateral margin 

 feebly sinuate at basal third; transverse impression obtuse, feebly 

 impressed, its included row of punctures not enlarged; anterior lobe 

 subapically and laterally with two irregular rows of coarser punctures, 

 midline and large patch on calli with numerous smaller punctures ; 

 posterior lobe, except umbones, with numerous distinct punctures 

 becoming finer posteriorly. 



Scutellum: Wider than long, 0.53:0.36. 



Hemelytron: Mesocorium impunctate discally except at extreme 

 outer, apical angle; exocorium uniformly and closely punctured over 

 enthe area. 



Propleuron: Prosternal carinae lobulate, about as high as labial II, 

 slightly more steeply terminated posteriorly. 



Legs: Anterior femur ventraUy with obhque, stout, blunt, pre- 

 median spine; anterior tibia neither angled nor spined ventraUy near 

 middle; posterior femur ventraUy with oblique, simple, subapical 

 spine, dorsally with subapical angulation ; posterior tibia more or less 

 compressed, straight. 



Length of body: 1.60. 



Type data. — Barber gave the type locahty of his male type (USNM) 

 as "Adjuntas, Porto Rico." 



Specimen studied. — 1 male (USNM 51580), Adjuntas, Puerto 

 Rico, Apr. 21, 1933, Faxon, Anderson, Mills, Oakley, in net above 

 woods. 



Discussion. — The present concept of this species is based on the 

 male paratype (USNM) . The specimen agrees well with the original 

 description and figure, differing only in the spelling of the trivial name 

 on the determination label, where it is speUed without the "a," 

 obviously a lapsus. 



Amnestus explanatus, new species 



Plate figures 64, 290 



Diagnosis. — Among the species with four marginal pegs on each 

 jugum, this one may be recognized by the narrowly but distinctly 

 explanate costal margins plus the anterior margin of the pronotum 

 being distinctly wider than the head (fig. 64). 



Description. — Based on the holotype male. Elongate, subparallel. 



Color: Yellowish brown, coria, legs, and labium somewhat paler. 



Head: Length more than three-fourths width, 0.44 : 0.56; interocular 

 width, 0.27; clypeus distinctly surpassing apices of juga; latter with 



