CRYPTOLITHODES TYPICUS. 271 



OCYPODE UEVULII (GTTERIN). Esquimalt Harbour. 

 GRAPSUS LIVIDUS (DANA). Esquimalt Harbour. 



HEMIGRAPSUS SEDENTATUS (DANA). Between the tide- 

 marks, Esquimalt Harbour. 



Dana records it from the island of St. Lorenzo, 

 at Peru. It is remarkable for the great speed 

 with which it runs across the dry sands to escape 

 capture. 



GELASIMUS ANNULIPES (EDWARDS). Esquimalt Harbour. 



Dana records it from Singapore, East Indies, 

 and Mr. Edwards from, the Indian Sea. 



PINNOTHERES FABA (DANA). Esquimalt Harbour, recorded 

 by Dana from Puget's Sound. 



CRYPTOLITHODES TYPICUS. Brandt, Bull, de 1'Acad de St. 

 Petersbourg-, 1849, vii. 175; Stirnpson, Crust. etEchin. of Pacific 

 North America ; Journal of the Boston Soc. of Nat. Hist., vol. vi. 

 p. 472, pi. 20. 



A specimen of this species, which was first 

 described by Brandt, and afterwards more fully, 

 as well as figured, by Stimpson, was taken in 

 Rosario Strait, Vancouver Island, as well as in 

 Upper California. 



The male, which has not hitherto been des- 

 cribed, differs from the female in being less 

 produced posteriorly. The posterior margin, 

 instead of being projected in an arch inversely 



