No. 398. ] NORTH-AMERICAN INVERTEBRATES. 137 
THE SPECIES OF PILUMNID&. 
Genus Glyptoxanthus A. Milne Edwards . . . G. erosus (Stimpson) G 
Genus Daira de Haan ou 4 ee s. o3 D. americana Stimpson? D 
Genus Cycloxanthops Rathbun . . C. novemdentatus (Lockington)? D 
Genus Carpoporus Stimpson. . . 
Genus Heteractaea Lockington Æ. /unata (Milne Edwards and Lucas) D 
Genus Xanthias Rathbun . . . . . . . 4. taylori (Stimpson) D 
Genus Leptodius A. Milne Edwards Z. agassizii A. Milne Edwar 
M(CH)G 
Genus Eurypanopeus A. Milne Edwards. . Æ. depressus (Smith) MSG 
Genus Lophopanopeus Rathbun. 
Key to Species. 
A. Upper margin of meral joints of ambulatory legs not spinulous. 
B. Hands smooth, without lobe or tooth on upper margin 
L. bellus (Stimpson) APD 
B’. Hands with one or more lobes or teeth on upper margin. 
C. Carpus of cheliped smooth or nearly so. 
D. Color of pollex running far back on hand i 
L. frontalis Rathbun D 
D’. Color of pollex not running back on han e 
L. heathii Rathbun, sp. nov.,? D 
C. Carpus of cheliped very rough. 
D. Carpal joints of ambulatory legs strongly bilobed. 
E. Carpus of cheliped covered with reticulating ridges 
enclosing pits of irregular shape 
L. leucomanus (Lockington) D 
E’. Carpus of chelipeds covered with tubercles 
L. diegensis Rathbun, sp. nov,* D 
D’. Carpal joints of ambulatory legs slightly bilobed 
L. lockingtoni Rathbun, sp. nov., D 
K California, on the authority of A. Milne Edwards. 
i Mr. S. J. Holmes has compared specimens (not types) determined by Lock- 
ington as Xantho novemdentatus, with C. californiensis, and pronounces them the 
same. If the species are identical, Lockington’s measurements of his type must 
be erroneous. 
. Type, U. S. Nat. Mus. No. 22870, Monterey Bay, Harold Heath, collector. 
Type, U. S. Nat. Mus. No. 4281, San Diego, 10 fathoms, H. Hemphill, 
collector. 
s Type, U. S. Nat. Mus. No. 19973, San Diego Bay, Steamer Albatross, collector. 
Xanthodes latimanus Lockington is probably a Lophopanopeus, but is not deter- 
minable with certainty. 
