PLATYCAECINUS EECUKVIDENS. 269 



OREGONIA GRACILIS (DANA). Sill. Am. Jour. Sec. 2, x. 

 Taken in from eight to ten fathoms water, in Esquinialt Harbour, 

 Straits of Georgia. 



OREGONIA HIRTA (DANA). Sill. Am. Jour. Sec. 2, xi. 

 p. 270. Straits of Georgia, U. S. 



CANCER PRODUCTUS (RANDAL). Esquinialt Harbour. 



PLATYCARCINUS RECURVIDENS, N. S. Dentes ante- 

 rioris lateralis regionis habeus noveru recurves et granulatos. 



This very pretty species may easily be dis- 

 tinguished by the sharp points of the inner 

 lateral teeth, granulated or minutely baecated 

 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 ;enus into that of 



o O 



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 antennae. 



The specimens were obtained in Esquinialt 

 Harbour. It frequents pools between tide-marks ; 



