82 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



vol. 38. 



line, two on either side of the median line and two below this trans- 

 verse row, one on either side of the median line. Close to the lateral 

 margin on either side, and just below the middle of the segment, there 

 is a thick bunch of hairs. The inner branch of the uropoda is pointed 

 at the extremity and extends but little beyond the abdomen. The outer 





Fni. 1.— Sph.eroma peruvianum. a, mandiule. X 23. b, first maxilla. X 41. c, maxillifed. X 41. 



l/.FIRSTLEG. C,SECONDLEG. /, THIRD LEG. g, FOURTH LEG. /(.FIFTH LEG. /.SIXTH LEG. X 1 -t i - 



branch has two teeth on the outer margin, with only a feeble indica- 

 tion of a third. This branch is about as long as the inner branch 

 and is also pointed at the extremity. The first three pairs of legs 

 arc Ions;- and slender, the last four short and stout. All are covered 

 with long hairs. 



