70 THE BLATTIDAE OF PANAMA 



bluntly rounded,"" briefly subchitinous meso-distad, length nearly half proximal 

 width. Subgenital plate conv-ex, very broad, with free margin evenly and very 

 broadly convex, truncate mesad. 



Head blackish brown, ocelli and mouth-parts buffy, maxillary palpi with distal 

 joint darkened. Limbs buffy. Ventral surface of abdomen blackish brown. Pro- 

 notum blackish brown. Tegmina translucent, dark chestnut brown, becoming 

 slightly paler distad ; portion of dextral tegmen concealed when at rest, transparent 

 and slightly paler. Wings transparent, with a faint tinge of brown, the entire 

 area of the costal veins chestnut brown, other principal veins and connecting 

 veinlets chestnut brown. Dorsal surface of abdomen chestnut brown, paler proxi- 

 mad. Cerci dark chestnut brown. 



A paratypic female differs in having the mouth-parts all darker, the limbs dark 

 chestnut brown. 



Measurements {in millimeters) 



cf , Porto Bello, type ... 14 

 9 , Tabernilla, allotype 

 9 , Chorrera, paratype 



In addition to the type and allotype, a paratypic female is at 

 hand, taken at Chorrera, Panama, on May 17, 1912, by A. Busck. 



Ischnoptera rufa rufa (DeGeer) (Plate IV, figure 8.) 



1773. Blatta rufa DeGeer, Mem. I'Hist. Ins., iii, p. 539, pi. 44, fig. 7. [Surinam.] 



1916. Ischnoptera rufa rufa Hebard, Trans. Am. Ent. Soc, xlii, p. 346, pi. xvi, figs. 



3 and 4. [Detailed discussion.] 



Gatun, Canal Zone, Panama, VII, 17 to VIII, 22, 1916, (Harrower), i cf , 3 9. 



Lion Hill, C. Z., Pan., VII, 28, 1907, (Busck), i d^. 



Alhajuela, C. Z., Pan., Ill, 4, 1912, (Busck), i 9. 



Tabernilla, C. Z., Pan., VI, 20 to VII, 31, 1907, (Busck), 2cf, i 9. 



Empire, C. Z., Pan., XI, 14, 1913, (Hebard; under debris on edge of jungle), 

 I juv. cf. 



Zone limit five miles west of Empire, C. Z., Pan., XI, 14, 1913, (Hebard; under 

 rubbish on edge of jungle), i cf . 



Paraiso, C. Z., Pan., IV, 24, 191 1, (Busck), i 9. 



Corozal, C. Z., Pan., IV, 26 and 27, 191 1, (Busck), 3 cf . 



"" A paratypic female at hand has the supra-anal plate with apex truncate. Such 

 variation in the female supra-anal plate appears to be general in the group and led Saus- 

 sure and Zehntner to describe conformts, a synonym of riifa occidentalis Saussure, based 

 on this feature of difference. This is well shown in figures 24 and 25 of plate iii, Biol. 

 Cent.-Am., Orth., i, both of which represent examples of rufa occidentalis Saussure. We 

 unfortunately synonymized conformis under ritfa rufa instead of under rufa occidentalis 

 and take the present opportunity to correct this error made in 1916, Trans. Am. Ent. 

 Soc, xlii, p. 346. 



