Ss 
SS OSS 
oe ee |] eT 

DECAPOD CRUSTACEANS OF THE 
NORTHWEST COAST OF NORTH AMERICA 
BY MARY J. RATHBUN 
CONTENTS. 
ANMOdUuCtHON’. . Ses setae Nera tee etait Gino are BRck Geo) Vlo-~ &. we alg abacateiars al 2 
ere halle ted ATES tu eve & ctrettaee: ora a ahe inlays ws) Wee, «a trose oh aes foueirm, 08h, Gre 4 
COOrA PIC CISD NM OU acces cin sao ware eae oelnos Hele ~'sirgse 6 
PRISCA CODY LAD LOT eS hd, track <a aielans ae weadie a “owes ae niece are Syd <imxeieass 8 
SyysbemI atic, MSCUSSION Ol speCleS ice veo cau ssn aeutes sos as ea ose 19g 
INTRODUCTION. 
THIS report includes primarily the crabs and shrimps collected 
by the Harriman Expedition. In order to name the shrimps it 
became necessary to overhaul the large collection of undeter- 
mined material of that group which has accumulated in the U. S. 
National Museum. This was derived from several years’ work 
of the A/éatross, and from the investigations of Dr. W. H. Dall 
and others, and embraces the entire coast from Arctic Alaska to 
southern California. The results of this study are given below, 
short descriptions of the new species having already been published 
in the Proceedings of the National Museum (XXIV, pp. 885-905, 
May, 1902). More than that, the accompanying list of species is 
designed to serve as a check-list of the Decapoda’ known to in- 
habit the region indicated, together with their distribution. 
The collection in the National Museum affords exceptional 
1The Anomura of the Museum collection, here listed, have been determined by Dr. 
J. E. Benedict. The Alpheide are to be reported upon by Dr. H. Coutiére of the Mu- 
seum at Paris; therefore the data given herein are quoted largely from Dr. Holmes. 
(3) 
