144 CRUSTACEANS OF THE DUTCH BORNEO-EXPEDITION. 



X 3; ll/j cephalic region of the same female from before, x 3; lie 

 external maxillipede of female, x 3; lid abdomen of male, X 3; lie 

 larger chela of male, x 3. 



Plate 10. 



Fig. 10. Potamon (Potamon) consobrinum n. sp., male from Mount 

 Damoes, x 1\; 10« cephalic region of this specimen, x 2; 10/< outer 

 foot-jaw of male, x 2; 10? abdomen of male, X 2; lOy' left chelipede of 

 female, X 2. 



Fig. 12. Potamon (Geothelphuaa) kenepai n. sp., male, X 2; 12a dorsal 

 view of the anterior part of carapace, X 4; 12c anterior extremity of 

 the sternum, x 4; 12d outer foot-jaw, x 4. 



Plate 11. 



Fig. 126. Potamon {Geothelphusa) kenepai n. sp., cephalothorax from 

 before, x 4; lie larger chela, x 4. 



Fig. 13. Potamon {Geothelphusa) hendersonianum n. sp., adult male, 

 X 2j 13a dorsal view of the anterior part of the cephalothorax of the 

 same male, x 4j 136 cephalic region of the same specimen from before, 

 X 4; 13c outer foot-jaw, x 4; l?>d abdomen of male, X 4; 13c anterior 

 part of the sternum of male, X 4j 13/ larger chela of adult male, 

 X 2; 13^ egg, X 2. 



Fig. 14. Potamon {Geothelphusa) Bürgeri n. sp., male, X 2; 14fl dorsal 

 view of the anterior portion of carapace, x 4; 146 cephalic region from 

 before, x 4; 14c outer foot-jaw, and anterior extremity of the sternum, 

 X 4; 14fi? abdomen of male, X 2; 14c penultimate segment of abdomen 

 of male, x 4; 14/ larger chela, x 2. 



Plate 12. 



Fig. 14^. Potamon {Geothelphusa) Bürgeri n. sp., dorsal view of the 

 anterior portion of the carapace of the female without definite locality, x 4. 



Fig. 15. Potamon {Geothelphusa) hicristatum n. sp., female, X 2; Iha 

 dorsal view of the anterior portion of the carapace, X 4; 156 cephalo- 

 thorax from before, x 4; 15c external maxillipede, X 4; 15c? larger hand 

 of female, x 4. 



Fig. 16. Sesarma {Sesarma) Amphinome n. sp., male, X 2; 16a dorsal 

 view of the anterior portion of the cephalothorax of male, x 4; 166 

 cephalic region of male, x 4; 16c abdomen of male, x 4; 16(/ chela of 

 male, x 4; 16c two last joints of penultimate pair of legs, x 4. 



Fig 17. Sesarma 'Sesarma) angustifrons A. M. E., male from the 

 Fiji Islands, dorsal view of the anterior portion of cephalothorax, x 4; 

 17fl cephalic region from before, x 4; 176 two terminal joints of penul- 

 timate pair of legs, x 2. 



Notes from the Leyclen M-useum, "Vol, XXI. 



