PLATYCARCINUS RECURVIDENS. 269 
OREGONIA GRACILIS (Dana).—Sill. Am. Jour. Sec. 2, x. 
Taken in from eight to ten fathoms water, in Esquimalt Harbour, 
Straits of Georgia. 
OREGONIA HIRTA (Dana).—Sill. Am. Jour. Sec. 2, xi. 
p. 270. Straits of Georgia, U.S. 
CANCER PRODUCTUS (Ranpar).—Esquimalt Harbour. 
PLATYCARCINUS RECURVIDENS, N. S.—Dentes ante- 
rioris lateralis regionis habens novem recurvos et granulatos. 
This very pretty species may easily be dis- 
tinguished by the sharp points of the inner 
lateral teeth, granulated or minutely baccated 
along the margin, and having the apex recurved. 
The intraorbital margin is three-lobed and granu- 
lated, the centre lobe being the smallest. The 
dorsal surface of the carapace is granulated on 
the prominent lobes in the larger specimens, but 
almost smooth in the young. The first pair of 
pereiopoda have also lines of granulations along 
the outer surface of the propodos and carpus. 
Dana has merged this genus into that of 
Cancer, but the greater length of the animal in 
relation to its breadth is a very convenient 
generic diagnosis, and one that appears to cor- 
respond with Milne Edwards’ description rela- 
tive to the more longitudinal position of the two 
pairs of antenne. 
The specimens were obtained in Esquimalt 
Harbour. . It frequents pools between tide-marks ; 
