172 PROCEEDINGS OF THE ACADEMY OF [Maj^ 



on the pronotum and the tegmina being distinctly greenish, as in 

 the Para individuals. 



The size extremes (in millimeters) of the Igarape-assu males and 

 the single female (Para) seen are as follows: 



d' cf 9 



Length of body 19.5 mm. 29 mm. 35 mm. 



Length of pronotmn 4.2 " 5.8 " 6.6 



Greatest dorsal (caudal) width of 



pronotum 2.6 " 3.8 " 4.8 



Length of tegmen 17.6 " 22.7 " 24.6 



Length of caudal femur 13.6 " 18.6 " 19 



i( 



it 



^s>"- 



The species has been recorded from Surinam, "Brazil," Coca 

 (Bolivar) and Valley of Santiago (Giglio-Tos), Ecuador. The 

 two latter records may not refer to true surinama. 

 Tetrataenia phila^e n. sp. (Pi. I, figs. 25 and 27.) 



Allied to T. surinama (Linnaeus), but differing in the generally 

 smaller size, less strongly bullate occiput, narrower interspace 

 between the eyes, shorter and proportionately broader fastigium, 

 more prominent eyes, in the more slender and more regularly arcuate 

 male cerci, in the less expanded genicular lobes of the median femora 

 and the small dorsal spine of the same region, in the less produced 

 and more robust caudal femora of the male and in the less strongly 

 contrasted coloration. 



Type: cf; Igarape-assu, State of Para, Brazil. (H. S. Parish.) 

 [Acad. Nat. Sci. Phila., Type no. 5284.] 



Size small (for the genus): form in general as in T. surinama. 

 Head with the occiput regularly buUate-arcuate ascending, but not 

 as elevated as the dorsal surface of the eyes, weakly carinate mesad, 

 the vertex and fastigium moderately declivent; interspace between 

 the eyes subequal in width to the inter-antennal section of the 

 frontal costa; fastigium nearly twice as broad as long, cephalic 

 margin arcuato-obtuse, faintly excavate near the apex, fastigio- 

 facial angle roundly obtuse when seen from the lateral aspect, face 

 gently retreating, bounding border of the fastigium well indicated; 

 frontal costa not strongly indicated ventrad, failing to reach the 

 clypeal suture, moderately narrowed dorsad at the fastigio-facial 

 angle and again to a smaller degree ventrad of the ocellus, thence 

 subequal in width ventrad, surface biseriate punctate dorsad, faintly 

 sulcate ventrad; lateral facial carinse distinct and gently diverging 



2" From ^lAe^ a friend. 



