38 U.S. NATIONAL MUSEUM BULLETIN 2 79 



about 12 to 13 larger sensory spots. Tormae with broad anterior 

 epitonna and prominent pternotormae. 



Hypopharynx with smaller distal area with 2 sensory spots distad of 

 transverse row of about 1 2 to 1 6 sensory spots. Maxilla with lacinia with 

 3 unci and about 14 to 15 marginal setae. 



Prothorax usually with 1 seta on anterior and posterior lateral 

 lobes. Infraepisternal and infraepimeral areas usually with 1 seta each. 



Mesothorax with about 3 to 4 setae on lateral lobe. Infraepisternal 

 area usually without setae; infraepimeral area usually with 2 setae, 



Metathorax usually without setae on anterior lateral lobe, with about 

 3 to 4 long setae on posterior lateral lobe. Infraepisternal area usually 

 without setae; infraepimeral area usually with 2 setae. 



Abdomen (dorsal aspect) with segments 1 through 4 with transverse, 

 irregular row or double row of about 20 to 28 spinules. DL3 with 

 transverse row of about 4 to 10 spinules. Segment 7 with transverse 

 band of about 20 to 32 spinules. DL2 with about 6 to 10 scattered 

 spinules plus row of setae. LL3 with about 2 to 4 reduced spinules. 



Abdomen (lateral aspect) with segments 1 to 8 usually with 1 seta 

 on LLl ; LL2 usually with 2 setae; LL3 usually with 1 seta on anterior 

 segments, without setae on LL3 of segments 7 and 8. 



Trox unistriatus Beauvois 



Trox unistriatus Beauvois, 1805, Insectes receuilles ... en Amerique, p. 175, 

 pi. 4b, fig. 5. 



Description based on the following material. Fourteen larvae 

 collected in soil beneath feathers at Raleigh, Wake Co., N. Car., 

 October 29, 1951, by Henry F. Howden and Paul O. Ritcher. 

 LIII: head capsule width 2.79 to 3.08 mm.; 14 specimens. 



Description of Third Stage Larva 



Figures I, 7, and 42 



Cranium dark orange red to black, with about 6 long setae near 

 each antenna. Anterior setae of frons very short. Postclypeus with 2 

 long setae on each side. Epipharynx with about 5 to 8 stout marginal 

 setae on each side of corypha. Haptomerum largely sclerotized, with 

 2 to 7 setae on each side of sensory area. Sensory area usually with 2 

 smaller sensory spots distad of 2 larger setiferous sensory spots. Hypo- 

 pharynx with smaller distal area bearing 2 larger sensory spots distad 

 of irregular, transverse row of about 16 to 18 smaller sensory spots. 



Prothorax usually with 1 or 2 setae on anterior lateral lobe and 

 about 1 to 3 setae on posterior lateral lobe. Infraepisternal area and 

 infraepimeral area usually with 1 or 2 setae. 



