Chilopods of the Genus Mecistocephalus. 335 



EXPLANATION OF THE PLATES. 

 Plate IX. 



Mecistocephalus celebensis, sp. n. 



Head in outline, x 14. 



Median region of labrum. x 195. 



Maxilla?, ventral view, x 23. 



Mandible, distal region, x 100. 



First lamella of mandible, x 315. 



Fourth lamella of inaudible, x 315. 



Right prehensor and part of prosternum. X 14. 



Impression of tenth sternite. x 44. 



Impression of twentieth sternite. X 44. 



Mecistocephalus cephalotes, Meinert. 

 Fig. 10. Median region of labrum. x 195. (Java.) 



Mecistocephalus pliilippinus, sp. n. 



Fig. 11. Ventral plate of pregenital segment with right coxopleura. 

 X 24. 



Plate X. 



Mecistocephalus phUippinus, sp. n. 



Fig. 1. Head in outline, x 14. 



Fig. 2. Median region of labrum. x 195. 



Fig. 3. Maxilla;. X 23. 



Fig. 4. First lamella of mandible. X 325. 



Fig. 5. Fifth lamella of mandible. X 325. 



Fig. 6. Right prehensor and part of prosternum, ventral view. X 14. 



Fig. 7. Impression of tenth sternite. X' 24. 



Fig. 8. Impression of twentieth sternite. X 24. 



3Iecistocephalus nagasaunus, sp. n. 

 Fig. 9. Head in outline, x 45. 



Fig. 10. Right prehensor and part of prosternum, ventral view. X 45. 

 Fig. 11. Impression of eighth sternite. X 75. 



Plate XL 

 Mecistocephalus nagasaunus, sp. n. 



Fig. 1. Anterior region of head with maxillae removed, ventral view. 



X 75. 

 Fig. 2. Median region of labrum. X 315. 

 Fig. 3. Maxillae, ventral view. X 70. 

 Fig. 4. First lamella of mandible. X 775. 



Mecistocephalus niedius, sp. n. 



Fig. 5. Head in outline, dorsal view, x 30. 



Fig. G. Anterior part of head, maxillae removed, in ventral view. 



X 45. 

 Fig. 7. Median region of labium. X 320. 

 Fig. 8. Maxilke, ventral view. X 45, 



