ii8 University of Michigan 



Plate XVIII 



Rl!yp}iodcs)mts aiiiphclicfiis, sp. nov. 



Fig. 117. Distal end of gonopods, ventral view, x 17. 

 Fig. 118. Left gonopod, ectal view, x t". 



Aphelidesmus guianensis, sp. nov. 



Fig. 119. Lateral portion of collum and second tergite, laterodorsal 

 view. X 13. 



Fig. 120. Fourth and fifth keels, male, view a little lateral of dorsal. 

 X 13. 



Fig. 121. Anal scale, x 13. 



Fig. 122. Right gonopod, ectal view. 



Trachclodcsmus angulatus, sp. nov. 



Fig. 123. Left ends of collum and second tergite, female, laterodorsal 

 view. X 33. 



Fig. 124. Seventeenth right keel, x 33. 



Fig. 125. Left sternal spines of seventeenth and eighteenth segment--, 

 ectal view, x 45. 



