NO. 3 OPINIONS 82 TO 90 17 



Platychirograpsus de Man, 1896, 292, Zool. Anz., No. 506, type /'. spcctahilis 



de Man, 1896. 

 Platypilumnns Alcock, 1894, 401, Ann. Mag. Nat. Hist., (6), v. 13, type P. 



gracilipes Alcock, 1894. 

 Platyxanthus A. Milne-Edwards, 1863, 280, Ann. Sci. Nat. (4), v. 20, type 



Xantho orbignyi Milne-Edwards & Lucas, 1843. 

 Polydectus Milne-Edwards, 1837, 145, Hist. Nat. Crust., v. 2, type P. cupulifer^ 



P. ciipulifcra Milne-Edwards, 1837 = Pilumnus cupuUfcr Latreille, 1825. 



Polydectus Rafinesque, 181 5, 142, Analyse de la Nature, a genus of mol- 



lusks, is a ncinen nudiivi. 

 Prionoplax Milne-Edwards, 1852, 163 [127], Ann. Sci. Nat. (3), v. 18, type 



P. spinicarpa = spinicarpus Milne-Edwards, 1852. 

 Pseudocarcinus Milne-Edwards, 1834, 407, Hist. Nat. Crust., v. i, type Cancer 



gigas Lamarck, 1818. Type specified by Miers, 1886, 141, Qiallenger Rept., 



Zool., V. 17. 

 Pseudopinnixa Ortmann, 1894, 694, Zool. Jahrb. Syst., v. 7, type P. carinata 



Ortmann, 1894. 

 Pseudorhombila Milne-Edwards, 1837, 58, Hist. Nat. Crust., v. 2, type Melia 



quadridentaia Latreille, 1825. 

 Psopheticus Wood-Mason, 1892, pi. 5, fig. i, Illus. Zool. Investigator, Crust, 



pt. I, type P. stridulans Wood-Mason, 1892. 

 Ptychognathus Stimpson, 1858, 104, Proc. Acad. Nat. Sci. Phila., v. 10, type 



P. glaber Stimpson, 1858. 

 Pyxidogtiathiis A. Milne-Edwards, 1879, 109, Bull. Soc. Philo. (7), v. 3, type 



P. granulosus A. Milne-Edwards, 1879. 

 Rhithropanopeus Rathbun, 1898, 273, Bull. Lab. Nat. Hist. State Univ. Iowa, 



V. 4, type Pilumnus harrisii Gould, 1841. 

 Rhizopa Stimpson, 1858, 95, Proc. Acad. Nat. Sci. Pliila., v. 10, type R. 



gracilipes Stimpson, 1858. 

 Ruppellioides A. Milne-Edwards, 1867, 279, Ann. Soc. Ent. France (4), v. 7, 



type R. convexus A. Milne-Edwards, 1867. 

 Sarmatium Dana, 1851, 247, 251, Proc. Acad. Nat. Sci. Phila., v. 5, type S. 



crassum Dana, 1851. 

 Scalopidia Stimpson, 1858, 95, Proc. Acad. Nat. Sci. Phila., v. 10, type 5". 



spinosipes Stimpson, 1858. 

 Scleroplax Rathbun, 1893, 250, Proc. U. S. Nat. Mus., v. 16, type S. grannlata =r 



granulatus Rathbun, 1893. 

 Speocarcinus Stimpson, 1859, 58, Ann. Lye. Nat. Hist. N. Y., v. 7, type 5". 



carolinensis Stimpson, 1859. 

 Sphaerozius Stimpson, 1858, 35, Proc. Acad. Nat. Sci. Phila., v. 10, type 



5". nitidus Stimpson, 1858. 

 Tctraxantbus Rathbun, 1898, 275, Bull. Lab. Nat. Hist. State Univ. Iowa, v. 4, 



type Xanthodes bidentatus A. Milne-Edwards, 1880. 

 Tetrias Rathbun, 1898, 607, Proc. U. S. Nat. Mus., v. 21, type T. scabripes 



Rathbun, 1898. 

 Thaumastoplax Miers, 1881, 261, Ann. Mag. Nat. Hist. (5), v. 8, type T. anom- 



alipes Miers, 188 1. 

 Utica White, 1847, 85, Proc. Zool. Soc. Lond., v. 15, type U. gracilipes 



White, 1847. 



