338 PROCEEDINGS OF THE NATIONAL MUSEUM vol. us 



Type, female, MCZ 30684 ; two paratypes, females, (one USNM) ; 

 all from Cachabe [labelled "low c."]. Province Esmeraldas, Western 

 Ecuador, approximately 500 ft., collected by Rosenberg, December 

 1896; one female, BMNH, Baly collection, without locality label. 



Remarks: The large size and the dark elytra with the pale spots 

 make this species easily recognized. Most of the species of this 

 genus have been collected in the Andes or from the eastern side of 

 the Andes, but this was taken in western Ecuador in the low country. 



Hystiopsis exarata, new species 



Figure 74 



Between 4.5 and 7 mm. in length, oblong oval, faintly shining, the 

 elytra costate with the intervals geminate striate punctate, pale yellow 

 brown with piceous tibiae and tarsi ; the elytra often with metallic blue 

 or purplish markings on the humerus, below the scutellum along the 

 suture, a large spot on each elytron slightly below the middle and a 

 smaller spot at the apical curve, these markings often evanescent in 

 part or enlarged to form three fasciae across the elytra. 



Head with the interocular space a little more than half the width of 

 the head, occiput alutaceous and finely punctate, the frontal tubercles 

 swollen, a median depression above, no carina down the lower front but 

 sometimes a median elevated line, the lower front depressed, entirely 

 pale yellowish brown. Antennae brown with the three basal and three 

 terminal joints pale. Prothorax nearly twice as wide as long with 

 curved sides and a transverse sulcus, shining, impunctate, pale 

 yellow brown. Scutellum pale. Elytra costate, the intervals with 

 coarse geminate-striate punctm"es, finely alutaceous but somewhat 

 shiny, pale yellow brown with often pale metallic blue or purplish 

 markings consisting of a spot covering the humerus, a long spot on 

 each side of the scutellum and a little way down the suture, a large spot 

 nearly across the elytra but usually not joined at the suture in the 

 middle, and a lateral spot near the apex, the suture narrowly dark at 

 this point; these markings sometimes enlarged to form three fasciae 

 across the elytra, or again the spots in part evanescent. Body beneath 

 pale with the breast sometimes darker, femora pale, tibiae and tarsi 

 dark. All tibiae with a spine. Length 4.5-7 mm.; width 2-3.7 mm. 



Type, female, MCZ 30685, from Brazil. 



Remarks: This species is represented mostly by females, only one 

 male being examined, most are very old specimens. There is one 

 specimen, USNM, from Buenos Aires, ten specimens, BMNH, all 

 from Bahia and Rio de Janerio, Brazil, The most recent specimen 

 found was collected by G. E. Bryant at Corcovado, Rio de Janeiro, 

 May 8, 1912. The only male examined does not show any head or 



