1905.] NATURAL SCIENCES OF PHILADELPHIA. 807 



STILPNOCHLORA Stil. 

 Stilpnochlora marginella (Serville). 



1839. Phylloptera marginella Serville, Orthopteres, p. 405. [Cape of Good 

 Hope; erroneous.] 



San Jose. September, 1902. (C. F. Underwood.) [A. N. S. Phila.] 

 One male. 



Stilpnochlora tolteca (Saussure). 



1859. Phylloptera tolteca Saussure, Revue et Magas. de Zool., 2e ser., XI, 

 p. 203. [Mexico.] 



Atenas. (Schild and Burgdorf.) [U. S. N. M.] One female. 

 San Jose. September, 1902. (C. F. Underwood.) [A. N. S. Phila.] 

 Three males, five females. 



Stilpnochlora azteca (Saussure). 



San Jose. September, 1902. (C. F. Underwood.) [A. N. S. Phila.] 

 One female. 



Tarbaca. October, 1902. (C. F. Underwood.) [A. N. S. Phila.] 

 One female. 



STEIRODON Serville. 



1831. Stcirodon Serville, Ann. Sci. Nat., XXII, p. 140. 



Type. — Phyllophora citrifolia Thunberg = Steirodon validum Stal." 



Steirodon validum Stk\. 



1815. Phyllophora citrifolia Thunberg, IVKm. I'Acad. Imp. Sci. St. P^tersb., 



V, p. 286. (Not Gryllus {Tettigonia) citrifolius LinnsEus and authors.) 

 1874. Siteirodori] validum Stal, Recensio Orthopterorum, II, p. 44. (Based 



in part on Thunberg's material.) [Locality unknown.] 



Costa Rica. (C. F. Underwood.) [A. N. S. Phila.] One female. 

 This Brazilian and Guianan species is here recorded for the first 

 time from Central America. 



OROPHUS Saussure. 



1859. Orophus Saussure, Revue et Magas. de Zoolog., 2e ser., XI, p. 204. 



1878. Anepsia Brunner, Monogr. der Phaneropt., p. 269. 



1897. Paragenes Saussure and Pictet, Biol. Cent.-Amer., Orth., I, p. 338. 



"The genus Steirodon was based on three forms: citrifolius, prasinus and 

 thoracicus. The second was removed to Trigonocorypha in 1874; the third 

 to Posidippus the same year. The first, citrifolius, was based wholly on references 

 as follows: 



Locusta citrifolia Fab., Ent. Svst., No. 1. 

 De Geer, Mem., t. Ill, p. 437, PI. 37, fig. 3. 

 Stoll, Sauter., PI. 4, fig. 12. 

 Phyllophora citrifolia Thunb., M6m. de I'Acad. Imp. des Sc. de Saint-P^tersb., 

 t. V, p. 286. 

 The references of Fabricius and De Geer were based on Linn^'s Gryllus (Tet- 

 tigonia) citrifolius, which was placed in Posidippus in 1874. Stoll's figure was 

 considered a Peucestes the same year, leaving Thunberg's misidentification, later 

 named by Stal, who examined the Thunberg material, as the type. 



