78 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



six second-stage larvae reared in cow dung and sand Nov. 18, 1942, 

 by O. L. Cartwright (USNM). 



Description: Maximum width of head capsule of third-stage 

 larva 1.32-1.35 mm. Cranium yellowish, surface smooth. Three 

 dorsoepicranial setae and two microsensillae on each side. Frontal 

 sutures distinct. Clypeus not marked into preclypeus and post- 

 clypeus. 



Epipharynx with protophoba tristichous on left and monostichous 

 on right; protophoba with 17-19 microsensillae; mesophoba poly- 

 stichous. Crepide small and subcircular; epitorma asymmetrical, 

 flattened, bilobed apically and bent towards laeophoba. 



Mandibles light yellowish brown with scissorial and molar area 

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

 one seta. Brustia poorly developed on right mandible. 



Maxillary stridulatory area with an irregular row of 24-28 conical 

 teeth facing cephalad; small toothlike markings behind the plectrum 

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

 or five short setae. 



Abdominal segments 1-8 each with three dorsal annulets; each 

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

 segments 6-8. On the annulets of segments 1-5, each prescutum 

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

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

 Segments 7 and 8 broad, 9 and 10 narrow, each with two transverse 

 rows of closely placed setae but dorsa not divided. 



Raster with teges of 44-50 hamate setae curved at their distal ends; 

 two or three long and slender setae on each side. Lower anal lobe 

 divided into two sublobes placed remote from each other. 



Ataenius imbricatus (Melsheimer) 



Material examined: Twelve third-stage larvae reared Apr. 28 

 to June 2, 1944, at Clemson, S.C., by O. L. Cartwright (USNM). 



Description: Maximum width of head capsule of third-stage 

 larva 1.02-1.12 mm. Cranium light yellow, surface smooth except 

 for two depressions on each side on the frons. Three dorsoepicranial 

 setae and two microsensillae on each side. Frontal sutures distinct. 

 Clypeus not marked into preclypeus and postclypeus. 



Epipharynx with protophoba bistichous on left and monostichous 

 on right; protophoba with 13-15 microsensillae; mesophoba mono- 

 stichous in the middle and polystichous on the sides. Crepide small 

 and subcircular; epitorma asymmetrical, flattened apically and bent 

 towards laeophoba. 



Mandibles light yellowish brown with scissorial and molar area 

 reddish brown. Each mandible dorsally with two setae, ventrally 



