10 TRUE CRABS OF MONTEREY BAY 



Family Pinnotheridae. 



23. Genus Pinnotheres. 



38. P. nudus Holmes x x 



24. Genus Raphonotus. 



39. R. subquadratus (Dana) x x 



25. Genus Pinnixa. 



40. P. occidentalis Rathbun ? 



41. P. californiensis Rathbun x x 



42. P. tubicola Holmes x x 



43. P. littoralis Holmes x 



44. P. longipes (Lock.) x x 



45. P. faba (Dana) x x 



26. Genus Scleroplax. 



46. S. granulata Rathbun x 



27. Genus Cryptophrys. 



47. C. concharum Rathbun x 



28. Genus Opisthopus. 



48. O. transversus Rathbun x x 



Family Grapsidae. 



29. Genus Pachygrapsus. 



49. P. crassipes Randall x x 



30. Genus Hemigrapsus. 



. 50. H. nudus (Dana) x x 



uj^\ 51. H. oregonsis (Dana) x x 



31. Genus Planus. 



52. (P. minutus (Linnaeus) ) ? 



