68 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.60. 



Plate 14. 

 Arolus purulanus, new species. 



Fig. 1. Telopodite of anterior gonopod, caudal view X 72. 



2. Posterior gonopod, mesal view X 72. 



3. Fourth leg of male, with ends of sternal processes X 48.5. 



4. Fifth leg of male X 48.5. 



5. Sixth leg of male X 48.5. 



6. Seventh leg of male X 48.5. 



7. Collum, lateral view X 33. 



Sphaeriodesmus hondurasanus, new species. . 



8. Anterior tergites, lateral view X 9.5. 



9. Caudal end, lateral view X 9.5. 



10. Caudal ventral margin of eighth segmentX9.5. 



Plate 15. 

 Sphaeriodesmus hondurasanus, new species. 



Fig. 1. Gonopods of male, ventral view X 48.5. 



2. Gonopod, mesal view X 48.5. 



Oxypyge equalis, new species. 



3. ScobinaX48.5. 



Nyssodesmus nigricaudus, new species. 



4. Lateral portion of collum in outline, dorsal view X 8. 



5. Twelfth right keel X 8. 



6. Caudal end in outline, dorsal view X 8. 



7. Anal scale X 16. 



8. Left gonopod in situ, ventral view X 16. 



Nyssodesmus niimus, new species. 



9. Twelfth keel, male type, in outline+8. 



10. Anal scale X 16. 



11. Right gonopod, caudoventral view+16. 



Plate 16. 

 Nyssodesmus nicaraguanus, new species. 



F^iG. 1. Twelfth right keel X 8. 



2. Anal scaleX16. 



3. Left gonopod, ventral view X 16. 



4. Right gonopod, ectal view X 16. 



