r>f)6 PROCEEDINGS OF THE NATIONAL MUSEUM. 



ovipostor slender, exserted, the basal half of upper pair with three 

 transverse rugie, apical half slender, scooped out, curved upward and 

 slio-htly inward; lower pair with a broad basal tooth, the apical half 

 narrowed and curved downward. 



General color dull grayish brown. Eyes slightly ssneous, more or 

 less clearly longitudinally striped anteriorly with dark brown and tes- 

 taceous. Sides of head and upper portion of sides of pronotuni show- 

 ing a faint dusky band, below this a paler one; upper edge of cl3'peus, 

 lower face, and facial carinj\3 also paler. Tegraina unicolorous, save 

 that a few of the smaller veins and veinlets above near the base are a 

 trifle paler. Hind wings h3'^aline at base, the apical portion faintly 

 clouded. Hind femora with indication of three fuscous bands, one 

 l)asal, one median, and the other preapical, most decided across upper 

 edge, and crossing over to upper edge of inner face. Latter, along 

 with lower sulcus, })right blood-red. Hind tibia dirty plumbeous, 

 infuscated apically. Pectus and venter pale dirty A'ellow. 



Length of l)ody, female, 30, of pronotum, 5.1, of tegmina, 17, of 

 hind femora, 11 nnn. 



ITahltdt. — The type, a single female, was collected by the writer at 

 San Bernardino, Paraguay, during the month of September, 1897. It 

 was taken in a small opening near the edge of a heavy forest, and if 

 memor}' is not at fault, was collected from the trunk of a small shrub. 



ADIMANTUS Stal. 



ADIMANTUS VITTICEPS ( Blanchard). 



Acridlutii vitt iceps BhAycHARB, in D'Orbigny Voy. rAiner. Merid., VI., 1837—13, 

 Pt. 2, Insect., p. 216, pi. xxvii, fig. 4. 



nal>'it(it. — Sapucay, Paraguay, W. T. Foster, collector. Specimens 

 of both sexes are at hand. 



Should this insect prove to be of the same species as Burmeister's 

 O.ciia (»'n((tissliiia^" it is quite probable that the Burmeister name would 

 have priority, since D'Orbign\'\s work began publishing in 1837 and 

 was not completed till 1843, while the Handbuch was published in 

 1838. Whether the insects are identical or not they are at least 

 congeneric. 



ZYGOLISTRON TRACHYSTICTUM Rehn. 



Zxjgolixtron Iradujxtidiuii Rehn, Knt. NewH, XVI, 1905, p. 39, figs. 1, 2, 3, male. 



There are before me as I write 9 males and 3 females of this peculiar 

 locust. Although one would iiave no difticulty in recognizing the 

 two sexes as belonging to one and the same species, there is sufficient 

 difference between the two to warrant me in presenting herewith a 

 description of the female which Mr. Rehn had not seen when he drew 

 up his description. 



aHamlbucii Knt., II, p. 636. 



