17 



57. Forficula exilis. Head mahogany brown, smooth, the 

 middle of it slightly tiiinid, with a pair of broad shallow oblique sul- 

 cations between the antennae, meeting each other above and forming 

 a /\ ; labrura dusky; palpi brownish luteous, paler towai'd tip; basal 

 joint of antennse mahogany brown; remaining joints (at least as far 

 as the ninth) reddish brown. Pronotum luteous, rufous in the mid- 

 dle, quadrate, slightly longer than broad, scarcely broader posteriorly, 

 the sides straigiit, the posterior border gently convex, the surface 

 smooth, flat, a little depressed excepting down the middle, which 

 bears an impressed line, fading posteriorly. Tegmina nearly twice 

 as long as the pronotum, luteous, duskily bordered on the inner side; 

 wings scarcely extending beyond the tegmina, similarly colored; legs 

 luteous, the femora slightly tinged with brown. Abdomen very slen- 

 der, the sides scarcely convex, very dark mahogany brown, the sur- 

 face minutely and sparsely punctulate; last segment quadrate, the 

 posterior area deeply transversely depressed in the middle, with a 

 slight short longitudinal impressed median line at the anterior limit 

 of the same, preceded by a pair of submedian, almost equally short, 

 very faintly impressed lines ; the depression is bordered laterally 

 next base of either arm of forceps by a blunt tubercle. Forceps 

 rather simple, as long as the last four or five dorsal segments, rather 

 broad at base, narrowing suddenly beyond, and then depressed 

 cylindrical, slender and tapering, gently incurved and finely pointed; 

 inner edge slightly tubcrculato-denticulatc, especially on the basal 

 half, a slightly larger tubercle at the middle of the apical half. 

 Pygidium a jiointed flattened triangular lamina. Length of body, 

 10.5 mm.; of tegmina and wings, 'J. 5 mm.; of hind femora, 2.1 mm.; 

 of forceps, 3.75 mm. 1 cf. Texas; received from Mr. P. R. Uhler. 



58. Forficula aculeata. Head uniform rather dark casta- 

 neous, smooth, gently tumid, with a pair of oblique, slightly bent 

 impressions between the antennse; palpi luteous; antennas 12-jointed, 

 dark brown, becoming paler away ficm the base, the extreme tips of 

 some of the basal joints marked with blackish. Pronotum rather 

 dark castaneous, the sides transparent and nearly colorless, quadrate, 

 noticeably longer than broad, the sides parallel and straight, the 

 hind border a little convex with rounded posterior angles, the sur- 

 face smooth, nearly flat, with a broad and very shallow transverse 

 postmedian impression, and a slight impressed longitudinal line about 

 half as long as the pronotum, starting from a little behind the front 

 edge. Tegmina nearly twice as long as the pronotum, squarely 



