88 THE BLATTIDAE OF PANAMA 



Subfamily NYCTIBORINAE 

 We would note that In all the species of the genera Nyctibora, 

 Eunyctibora and Paratropes at hand, the tarsal claws are distinctive 

 in being asymmetrical, the cephalic claw being decidedly shorter 

 than the caudal claw, and not or very slightly projecting beyond the 

 arolium. In Megaloblatta, however, the tarsal claws are symmet- 

 rical, the arolia subobsolete, represented by a small chitinous node 

 between the bases of the tarsal claws. 



Nyctibora noctivaga Rehn (Plate V, figure 4.) 



1896. Nlyctobora] mexicana Griftini (not of Saussure, 1864), Boll. Mus. Zool. 

 Anat. comp. Univ. Torino, ix, no. 236, p. 2. [One specimen; Lake Pita, Darien.] 

 1903. Nyctibora noctivaga Rehn, Trans. Am. Ent. Soc, xxix, p. 3. [ cf ; Machuca, 



San Juan River, Nicaragua.] 



Gatun, Canal Zone, Panama, VII, 17 to VIII, 5, 1916, (Harrower; from banana 

 stalks), 3 juv. 



Paraiso, C. Z., Pan., (Schwarz), l cf; I, 8 and II, 7, 191 1, (Busck), 2 juv. 



Cabima, Pan., V, 30, 191 1, (Busck), i 9. 



The distinctive male supra-anal plate of this insect, the largest of 

 the uniformly dark species of the genus, is here figured. 



The extremes in pronotal and tegminal proportions are rather 

 decided, in a series of three males and four females now before us, 

 including the type, being as follows: pronotum, d^, 8.8 to 9.8 by 

 12.8 to 14, 9,9 to 10.8 by 14 to 15.3; tegmina, &, 37.8 to 41.8 by 

 14.6 to 16.2, 9 , 35.9 to 42 by 14.5 to 17.2 millimeters. The max- 

 imum is shown by a pair from Jamaica, the pair from Panama 

 approach the minimum. 



Eunyctibora nigrocincta (Shelford) 



1907. Nyctibora nigrocincta Shelford, Ann. Mag. Nat. Hist., (7), xix, p. 37. [ c?', 9 ; 

 Colombia.] 



1908. E[unyctibora] nigrocincta Shelford, Gen. Ins., 74me fasc, Orth., Blattidae, 

 Nyctiborinae, p. 2, pi., fig. i. (Colored dorsal view.) 



Ancon, Canal Zone, Panama, VI, 1913, (Zetek), i 9, [Hebard Collection]. 

 Bocas del Toro, Pan., VII, i to 10, 1908, (Wirt Robinson), i cf , [United States 

 National Museum]. 



Paratropes bilunata Saussure and Zehntner 



1893. Paratropa bilunata Saussure and Zehntner, Biol. Cent.-Am., Orth., i, p. 60. 



[ 9 ; Bugaba, Panama.] 



Bugaba, Panama, (VV. Schaus), i cf , [Hebard Collection]. 



