1905.] NATURAL SCIENCES OF PHILADELPHIA. 805 



DICHROPLUS Stdl. 

 Dichroplns morosus Rehn. 



1905. Dichroplus morosus Rehn, Proc. Acad. Nat. Sci. Phila., 1905, p. 442. 

 [Monte Redondo, Costa Rica.] 



Side of Tablazo, at 1,350 meters. October, 1904. [No. 67.] (P. 

 BioUey.) Two males, two females. 



As the male of this species has never been described its characters are 

 given herewith. 



(5^. Size small. Head with the interspace between the eyes moder- 

 ately narrow, shallowly sulcate; fastigium declivent, passing into the 

 frontal costa without interruption of the shallow sulcus ; costa narrow- 

 ed dorsad, regularly but slightly expanding ventrad, more distinctly 

 sulcate ventrad of the ocellus ; eye about half again as long as the infra- 

 ocular groove. Pronotiun with the caudal margin subrectangulate. 

 Interspace between the mesosternal lobes subquadrate ; metasternal 

 lobes subcontiguous. Tegmina exceeding the tips of the caudal femora 

 by about half the length of pronotum. Furcula present as extremely 

 minute knobs; supra-anal plate with a longitudinal median groove, 

 outline slightly narrowed with the apex abruptly rounded except for 

 a slight median angle; cerci with the proximal section broad, strongly 

 tapering in the proximal half, the distad section very narrow, styliforni 

 and subequal, tip slightly incurved, deciuved and acute; subgenital 

 plate produced, longer than broad, the apex narrowly rounded. 



Measurements. 



Length of body, 16 mm. 



Length of pronotum, 3.5 " 



Length of tegmen, 12.5 " 



Length of caudal femur, 8.5 " 



The specimens examined exhibit considerable variation in the shade 

 of the ground color and the intensity of the pattern. 



AIDEMONA Brunner. 

 Aidemona azteca (Saussure). 



Side of Tablazo, at 1,700 meters. October, 1904. [No. 66.] ' (P. 

 Biolley.) One female. 



TETTIGONID^. 

 APHIDNA Sm. 

 1874. Aphidna Stal, Recensio Orthopterorum, II, pp. 13, 28. 

 Type. — Phaneroptera alipes Westwood d'. 



