ARTHROPODA 
Suborders 
BRACHYURA 
(Abdomen shorter than 
cephalothorax, and perma- 
nently folded under it; eyes 
inelosed in orbits; anten- 
nules and antenne small) 
Families Genera 
Carcinides 
oe Callinectes 
(Swimming crabs. Ov alip es 
Cancer 
CANCROIDZ 
Menippe 
Eupanopeus 
Eurypanopeus 
Neopanopeus 
Rhithropanopeus 
a GRAPSID 2a Hemigrapsus ; 
eal 
rs Pacygrapsus 
s) Ocypoda 
6 OCYPODIDA 
g (Sand- and fiddler-crabs ) Uca 
B Libinia ; 
Hyas 
MAIDA ( Loxorhynchus 
(Spider-crabs) | Pugettia 
Sternorhynchus 
Epialtus 
Pitho 
\ Lambrus 
CALAPPIDE Calappa 
PINNOTHERIDZ Pinnotheres 
Order STOMATOPODA 
241 
Species 
C. menas 
C. sapidus 
O. ocellatus 
C. irroratus 
C. borealis 
C. magister 
C. productus 
C. antennarius 
M. mercenaria 
E. herbstii 
E. depressus 
N. texana 
R. harrisit 
HA. nudus 
HI. oregonensis 
P. crassipes 
O. arenaria 
U. minax 
U. pugnax 
U. pugilator 
LL dubia 
L. emarginata 
Hi coarctatus 
AA, lyratus 
HI, araneus 
L. crispatus 
P. gracilis 
S. sagittarius 
E. productus 
P. aculeata 
L. pourtalesti 
Cc. flamma 
P. ostreum 
(Abdomen very large; second pair of thoracic legs very large; gills.borne 
on abdominal segments) 
Squilla 
16 
S. empusa 
