24 U.S. NATIONAL MUSEUM BULLETIN 279 



Legs (fig. 38) four-segmented and subequal, becoming slightly 

 longer posteriorly. Short setae numerous on all 4 segments; long 

 setae only on 2 basal segments. Each leg with long, terminal claw 

 with 2 setae. Tibiotarsus with 2 whorls of 6 setae each. 



Abdomen (dorsal aspect, figs. 35, 36, and 37) with segments 1 through 

 8 with 3 dorsal lobes (DLl, DL2, and DL3) and lateral biforous 

 spiracles. Segments 1 through 4 with similar setal pattern. Setae usually 

 increasing in number from segment 1 to about segment 3. With 

 transverse row or band of only spinules on DLl and DL3. With trans- 

 verse row or band of spinules plus setae on DL2. Setae usually posterior 

 to spinules, becoming more numerous laterally and often intergrading 

 with setae of spiracular lobe. DL3 with 2 associated dorsolateral lobes 

 (DL3a and DL3b) usually with a few scattered setae or spinules. 

 Segments 5 and 6 with setal pattern similar to segments 1 to 4 with 

 exception of DL3. DL3 with narrow, transverse patch of spinules 

 flanked anterolaterally by small group of spinules on DL3b. DL3a 

 usually with a few small setae. DL3a and DL3b greatly reduced on all 

 segments posterior to segment 6. Segment 7 with transverse group of 

 spinules or setae on DLl. DL2 with transverse row or band of setae or 

 of intermixed setae and spinules. DL3 glabrous, with transverse row 

 of about 1 to 15 small setae, or with isolated, small spinules. Segment 8 

 with transverse row of about 4 to 10 setae on DLl. DL2 with transverse 

 row of about 6 to 20 setae. DL3 glabrous or with up to about 7 scattered, 

 small setae. Segment 9 with 2 rows of setae ; anterior row with about 

 4 to 8 long setae, posterior row with about 4 to 10 long and short setae. 

 Segment 10 with 1 or 2 rows of caudally directed spiniform setae. 



Abdomen (lateral aspect, fig. 35) with segments 1 through 8 with 

 3 setae-bearing lobes (LLl, LL2, and LL3). LLl with about 1 to 4 

 setae ; LL2 with about 2 to 8 setae ; LL3 with to about 4 setae. Setae 

 on each respective lobe usually decreasing in number posteriorly from 

 about segment 3 to segment 8. Segment 9 with only 2 lateral lobes. 

 LLl with about 1 to 3 setae; larger posterior lobe (LL2) with about 3 

 to 10 setae. Segment 10 usually with 2 rows of caudally directed 

 spiniform setae; anterior row of setae usually reduced in size and 

 number. 



Abdomen (ventral aspect, similar to fig. 28) with 3 transverse lobes 

 (VLl, VL2, and VL3). VLl without setae. VL2 with transverse row 

 of about 8 to 24 setae on segments 1 and 2, decreasing to about 2 to 10 

 setae on segment 9. VL3 constricted in median region, expanded 

 laterally, with about 4 to 10 setae on each side on anterior segments, 

 decreasing to about 1 to 3 setae on each side on segment 9. Number 

 and size of setae and size of lobes on venter usually decreasing pro- 

 gressively from about segment 3 to segment 9. Segment 10 with 2 rows 

 of caudally directed spiniform setae, anterior row reduced in size and 



