The Amphipoda of Bermuda. 5 



29. MicrodeutopHs anomalus. Atlantic coast of Norway, Shetland 



Isles, Black Sea. 



30. Autonoe longipes. Naples, Scandinavia, British Isles, Port Jack- 



son, N. S. Wales. 



31. Eurystheus lina. 



32. Podoceropsis sophia. Arctic Ocean, Scandinavia, British Isles, 



Shetland. 



33. Isaea longipalpus. 



34. Amphithoe longimana. New England coast. 



35. A. nibricata. North Atlantic and adjoining seas of Europe. 



36. A. pollex. 



37. Grubia crassicornis. Naples, Black Sea. 



38. G. coei. 



39. Ericthonius brazilicnsis. Atlantic coast of North America, Nor- 



way, Adriatic Sea, Rio Janeiro, San Francisco, Cal. 



40. Chelura terebrans. Atlantic coast of North America, Norway 



to Black Sea. 



41. Caprella equilibra. Mediterranean, Norway, Charleston, N. Car., 



Rio Janeiro, Hong Kong, N. S. Wales. 



42. C. bennudia. 



43. C. danilevskii. Mediterranean, Black Sea, Copenhagen, Bay of 



Biscay, Sea of Japan, Port Jackson, N. S. Wales, Rio Janeiro. 



44. Protellopsis stebbingii. Gulf of Mexico. 



45. Cyatnus fascicularis. 



The specimens were all of relatively small size, the largest specimen 

 measuring less than 20 mm. in length, which is in accord with previous 

 observations that the Amphipoda of Arctic regions are of larger 

 size than those of warm waters. 



The classification of the Gammaridea into families is in a rather 

 unsatisfactory condition and no attempt at revision has been made 

 in the following pages. Boeck (i876) divides them into 10 famihes 

 and 22 subfamilies ; Stebbing (1888) in the " Challenger " Report makes 

 26 families and in his later work on the Gammaridea (1906) he 

 recognizes 41 families; Delia Valle (1893) in his monograph re- 

 cognizes only 10 families which, however, differ from Boeck's ; and 

 Sars (1895) divides the Gammaridea of Norway alone into 26 families. 



For complete synonomy, reference should be made to the exten- 

 sive works of Stebbing, Sars, and Delia Valle. Acknowledgment 

 is made at this time of the privileges of the laboratory of the U. S. 

 Bureau of Fisheries at Woods Hole, Mass. where part of this work 

 was done in the summer of 1906. 



