Il8 THE BLATTIDAE OF PANAMA 



Decided \-ariation occurs in the width of the interocular space 

 and in size, as is shown by the following measurements (in milli- 

 meters) for the few Panamanian specimens at hand. 



Interocular Length of Width of Length of Width of 

 + width pronotum pronotum tegmen tegmen 



Panama 2.9 12.8 17.7 44.9 16.6 



Gatun, Panama 2.6 ii.i 16. i 38.8 15. i 



Gatun, Panama 2.3 ii.i 16. i 37.4 14.5 



Subfamily CORYDIINAE 

 Holocompsa nitidula (Fabricius) 



1781. B[Iatla] nitidula Fabricius, Spec. Ins., i, p. 345. [[ 9], Surinam.] 

 1917. Holocompsa nitidula Hebard, Mem. Am. Ent. Soc, 2, p. 206, pi. viii, figs. 8 to 



II. (Detailed diagnosis.) 



Ancon, Canal Zone, Panama, (Jennings), i cf . 



The male sex of this minute species has the pronotum black, with 

 a weak green-blue sheen, the female having the pronotum mars 

 yellow to orange rufous. 



The present specimen is decidedly smaller than a series of other 

 males of the species before us. Length of body, 4; length of 

 pronotum, 1.2; width of pronotum, 1.8; length of tegmen, 3.9 mm. 

 In other respects it shows no variation from the normal.^" 

 Holocompsa panamae new species (Plate VI, figure 4.) 



The present species has the tegmina immaculate, the pronotum 

 pale laterad, dark mesad, the median band expanding caudad to the 

 caudal margin, instead of narrowing and failing to reach the caudal 

 margin as in H. zapoteca Saussure and Zehntner, which is the only 

 other known species of the genus having the pronotum bicolored. 

 In size panamae is smaller than any of the known species, the 

 type female being smaller than the average male of H. nitidula 

 (Fabricius). 



Type. — 9; Paraiso, Canal Zone, Panama. February 7, 191 1. 

 (A. Busck.) [United States National Museum.] 



Size very small, form stout, tegmina and wings projecting only slightly beyond 

 apex of abdomen. Head fully as broad as long; eyes very widely separated, above 

 not extending inward beyond antennal bases; ocelli minute, oval, with surface con- 

 vex; occiput and face supplied with very minute and moderately numerous hairs. 

 137 \Ye regret to state that, in the detailed diagnosis referred to above, we failed to 

 mention that, in males of this species, the hyaline distal portion of the tegmina shows, 

 when the tegmina are at rest, a weak but broad transverse suffusion of brown. 



