76 PROCEEDINGS OF THE NATIONAL MUSEUM vol. m 



Mandibles yellowish brown with scissorial and molar area reddish 

 brown. Each mandible dorsally with two setae, ventrally with two 

 setae, brustia well developed on left mandible but not so on right 

 mandible. 



Maxillary stridiilatory area with an irregular row of 13-16 conical 

 teeth facing cephalad; small toothlike markings behind the plectrum 

 and on cardo. Galea ventrally with a long seta and a row of five 

 short setae. 



Abdominal segments 1-6 each with three dorsal annulets; each 

 annulet with a transverse row of setae except the last annulet of 

 segment 6. On the annulets of segments 1-5 each prescutum with 

 six short setae, each scutum with four long setae and three short setae 

 on each side, and each scutellum with 10 short setae. Segments 7 and 

 8 broad, each segment with two dorsal annulets and each annulet with 

 a transverse row of setae. Segments 9 and 10 narrow, each with two 

 transverse rows of closely placed setae but dorsa not divided. 



Raster with teges of 50-56 hamate setae scattered irregularly on 

 the venter of 10th abdominal segment, three or four long setae on 

 either side. Lower anal lobe divided into two sublobes placed close 

 to each other. 



Ataenius brevis Fall 



Material examined: One third-stage larva, associated with adults, 

 collected at River Falls, S.C. Aug. 27, 1942, by O. L. Cartwright 

 (USNM). 



Description: Maximum width of head capsule of third-stage larva 

 1.09 mm. Cranium yellowish brown, surface smooth. Five dorso- 

 epicranial setae and two microsensillae on each side. Frontal sutures 

 distinct. Clypeus distinctly divided into smaller preclypeus and 

 large postclypeus. 



Epipharynx with protophoba bistichous on left and monostichous 

 on right; protophoba with 15 microsensillae; mesophoba monostichous 

 in the middle and polystichous on the sides. Crepide small and semi- 

 circula,r; epitorma asymmetrical, flattened, bilobed apically and bent 

 towards laeophoba. 



Mandibles yellowish brown with scissorial and molar area dark 

 brown. Each mandible dorsally with a single seta, ventrally with 

 two setae. Brustia poorly developed on right mandible. 



Maxillary stridulatory area with an irregular row of 9-11 blunt 

 teeth facing cephalad; small toothlike marking behind the plectrum 

 and on cardo. Galea ventrally with a long seta and a row of four 

 short setae. 



Abdominal segments 1-6 each with three dorsal annulets; each 

 annulet with a transverse row of setae except the last annulet of 



