I 



PLATE XII. 



Fig. I. Ccratoplax truncatifrons Rathbun, <;/', magn. lo. Fig. \a cephalothorax, anterior view, magii. lo. 

 Fig. \b external maxilliped, magn. 20. Fig. 1 6" left chela of (^ , outer view, magn. 10. Fig. i </ 

 right chela of cT, outer view, magn. lO. Fig. \e abdomen of cf, magn. 10. 



Fig. 2. Lophoplax bicristata n. g. n. sp., (^ , magn. 8. Fig. 2a external maxilliped, magn. 15. Fig. 2b abdomen 

 of cT, magn. 8. 



