REHN AND HEBARD 61 



closely allied species, holivari has these organs developed to the 

 greatest extent. 



Type. — 9 ; Colon, Panama. (Dr. E. Festa.) [Zoological 

 Museum of Turin.] 



The following description is based upon a male, taken at a lo- 

 calit}^ the nearest to that of the type at which the species has been 

 captured since its description. 



De.ficripiion.—d' ; Peralta, Costa Rica. March 26, 1910. (P.P. Calvert.) 

 [A. N. S. P.] 



Size a little larger than medium for the genus, form moderately slender 

 though somewhat heavier than /. tolteca. Head and eyes much as in that 

 species. Pronotum with dorsum similar to that of /. intermedia but slightly 

 more expanded caudad and with caudal margin very lightly emarginate 

 mesad;-^ lateral lobes also similar to that species but slightly deeper,^' hu- 

 meral sinus deep, roundly, and, when compared with that of intermedia, 

 more broadly acute-angulate. Tegmina long and wide when compared 

 with those of tolteca, the distal width greater than the mesal width, the teg- 

 mina reaching beyond the extremities of the caudal femora and obliquely 

 truncate at the apex with angles very narrowly rounded; marginal field of 

 tegmina narrowing evenly distad, from point of greatest width which is 

 proximad, as in tolteca. Disto-dorsal segment of abdomen very much as in 

 intermedia] supra-anal plate as in tolteca; cerci fairly long, longer than in 

 tolteca or intermedia, crassate, tapering to a blunt apex, the shaft deflected 

 slightly inward at the middle, apex toothed, this tooth directed meso-dorsad 

 at nearly a right-angle; subgenital plate similar to that of tolteca. Limbs 

 and armament of the same much as in tolteca, caudal femora proportion- 

 ately longer with the genicular lobes more produced. 



A female taken at a locality adjacent to that of the described male, fur- 

 nishes the data given below. 



Description of Female. — 9 ; Forest near Santa Cruz, Costa Rica. January 

 25, 1910. (Tristan and Calvert.) [A. N. S. P.] 



Very much like male in size and general appearance. Tegmina reaching 

 the distal extremities of the caudal femora. Ovipositor much as in tolteca; 

 subgenital plate rather elongate, scutiform, not emarginate laterad, apex 

 narrowly rounded, in transverse section much as in intermedia. 



22 We find the degree of this mesal emargination to be variable in /. tolteca, 

 intermedia and especially holivari; one specimen of the latter species before 

 us has this emargination pronounced, while in two individuals it is scarcely 

 perceptible. 



2' Two individuals from Nicaragua show somewhat deeper lateral lobes 

 of the pronotum than the rest of the series, which would indicate that a 

 certain amount of variability exists in this character. 



TRANS. AM. ENT. SOC, XL. 



