522 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



Description. — Based on one specimen seen, the type female. 



Head: Length more than half width, 1.23:1.82; interocular width, 

 1.04; anterior outline broadly semicircular, juga longer than clypeus, 

 converging and contiguous above its apex; eyes projecting beyond out- 

 line of head by about half transverse diameter; surface shining, jugum 

 with prominent radiating rugae and numerous close-set, intermixed 

 moderate and fine punctures; ocelli large, separated from eye by space 

 about half transverse ocellar width; jugum ventrally smooth, impunc- 

 tate; maxillary plate alutaceous, with irregular, coarse punctures 

 posteriorly. Antennal segments: I, 0.36; II, 0.43; III, 0.43; IV and 

 V missing. Bucculae not as high as labial II; labium broken, only 

 first segment present (0.56). 



Pronotum: With posterior margin partly broken, length more than 

 half width, 2.42:4.19; lateral margin weakly arcuate from base to 

 apical fourth, thence more abruptly incurved, with submarginal row of 2 5 

 setigerous punctures; transverse impression weak, with moderate punc- 

 tures similar to and merging with punctation across entire anterior 

 half of posterior lobe; latter with minute, widely scattered punctures 

 on posterior half; anterior lobe with broad submarginal band apically 

 and broader submarginal band laterally and narrower midline with 

 punctures similar to those of transverse impression, subapical band 

 with minute punctures interspersed. 



Scutellum: Length less than width, 2.56:2.71; discal punctures 

 irregular, much denser than those of inesocorium, slightly more 

 abundant laterally but not arranged in single, regular series; apex 

 shining, impunctate. 



Hemelytron: Shining, clavus with several incomplete rows of 

 punctures; mesocorium and exocorium with several widely spaced, 

 moderate punctures; costa with 21 to 23 setigerous punctures. 



Mesopleuron : Lateral area with few longitudinal rugae. 



Sternites: All, except ultimate, roughened laterally, with irregular 

 postmedian row of prominent setigerous punctures. 



Length of body: 7.07. 



Type data.— Signoret's type specimen (Wien) is a female. Al- 

 though the original description gave no locality, personal examination 

 of the type showed it to bear two labels, "Brazil, Coll. Signorct," and 

 Signoret's determination "marginal." 



Specimen studied: The type from Brazil. Distant (1899) ac- 

 credited Dallas' (1851) record of Aethus ciliatus from Colombia to 

 this strongl}^ marked species. However, Dr. China informed the 

 author that Dallas' specimen has only seven costal setigerous punc- 

 tures, thus preventing acceptance of Distant's conclusions. 



Discussion. — Signoret's type specimen is in fair condition but lacks 

 antennals IV and V, labials III and IV, the apex of II (dermestid 



