AMERICAN ORTHOPTEKA. 287 



Subfamily Blaberin^e. 

 Genus PETASODFJ Saussure. 



1864, Petasodes Saussure, Revue et Magasin de Zoologie, 2e ser.. xvi, p. 349. 

 Type. — Blatta reflexa Thunberg. 



Petasodes pedestris (Serville). 



1839, Blabera pedestris Serville, Orthopteres, p. 83. [Brazil.] 



Three females; Jundiahy, Sao Paulo, Brazil. April 12, 1898 and 

 October 9, 1899. (Schrottky.) [A. N. S. Phila.] 



Genus ARCHI.TI ANDRIT4 Saussure. 

 1893. Archimandrita Saussure, Societas Entomologica, viii, p. 67. Included 

 species — marmorata and deplanata. 



Areliiiiiandrita marmorata (Stoll.) 



1813, B[latta] marmorata Stoll, Natuurlijke Afbeeldingen en Besehrijvingen, 

 De Kakkerlakken, pp. 3 and 14. pi. iid, fig. 5. 



One male, two females ; Colombia. [A. N. S. Phila,] Nicaragua. 

 [U. S. N. M.] 



Archimaudrita tcssellata n. sp. 



Type; $ ; San Carlos, Costa Rica. (Schild and Burgdorf.) 

 [Cat, No. 6941, U. S. N. M.] 



Allied to A. marmorata (Stoll), but differing in the smaller size and 

 more elongate tegmina, 



Size large; form elongate ovate. Head completely bidden under tbe prono- 

 tuin; interspace between the eyes but little more than half tbat between the 

 ocelli, the ocular margins truncate; eyes irregularly reniform, the greatest depth 

 anteriorly; autenuse slightly over half the length of the body, basal joint mod- 

 erately large. Pronotum transverse ovate, anterior margin evenly arcuate ; pos- 

 terior margin arcuate, but presenting three very blunt and sub-obsolete projec- 

 tions; lateral margins rounded ; lateral portions as a whole depressed below the 

 disk of the pronotum. Tegmina ovate, widest in the distal section ; apex obtusely 

 rounded; costal and sutural margins very gently arcuate; basal field broad, 

 apparent to heyoud the middle of the tegmen ; anal sulcus arcuate, the anal field 

 being somewhat elongate hemispherical in shape. Wings elongate, the anterior 

 field very wide, almost equalling the posterior; apex bluntly rounded; ulnar 

 vein bearing eighteen complete rami; posterior field with the apex sub-truncate. 

 Supra-anal plate extensive, transverse, of greater width distally than proximally ; 

 the apical margin subtruncate, centrally with a small emargination. Cerci sub- 

 equal in width, depressed, apex rather blunt, slightly exceeding the supra-anal 

 plate in length. Subgenital plate slightly broader basally than long, apex 

 rotundate, lateral margins emarginate. Anterior femora with three or five 

 median and one apical spine on the anterior margin, posterior margin with one 

 apical spine, no genicularspine present ; tibiae about three-fifths the length of the 



TRANS. AM. ENT. SOC. XXIX. SEPTEMBER. 1903 



