270 CHLORODIUS IMBRICATUS. 
and it is common everywhere along the Oregon 
and Vancouver Island coasts. 
ERIPHIA GONAGRA (Epwarps).—Hist. des Crust., folio 1, 
p. 426, Esquimalt Harbour. 
PANOPGUS CRENATUS (Epwarps and Lucas).—Esquimalt 
Harbour. 
XANTHO DISPAR (Dana).—Esquimalt Harbour. 
XANTHO BELLA (Srmvpson).—Esquimalt Harbour. 
CHLORODIUS IMBRICATUS, N.S.—Anteriorem regionem 
carapacis habensimbricatam irregulariter ; posteriorem planam ; 
carpum et propodon pereiopodum paris primi rugosa, 
Carapace having the posterior portion smooth, 
the anterior being rough with flattened promi- 
nences, that form an irregularly imbricated sur- 
face. Anterior margin five-toothed, the central 
tooth being the largest, the posterior the most 
prominent. A small secondary tooth stands 
upon the anterior surface of the fourth and fifth 
teeth. The first pair of pereiopoda are short and 
robust ; they have the carpus deeply corrugated 
upon the external surface; a slight rib is also 
present upon the carpus of each of the four suc- 
ceeding pairs of pereiopodos. | 
Only a single specimen of this pretty little 
species was obtained. It was dredged in about 
eight fathoms of water, in Esquimalt Harbour. 
