442 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 5 



Genus MEDAEUS Dana, 1851 

 Key TO THE Galapagos Species of the Genus Medaeus 



A^ Carapace and chelipeds areolate ; legs with lobate crests 



M. lobipes 



A^ Carapace and chelipeds spinulous ; legs spinulous also . 



M. spinulifer 



Medaeus lobipes Rathbun 

 Plate 77, Fig. 2 



Medaeus lobipes Rathbun, Proc. U.S. Nat. Mus., vol. 21, p. 583, pi. 44, 

 fig. 1, 1898; Bull. 152, U.S. Nat. Mus., p. 275, pi. 114, text fig. 44, 

 1930. Crane, Zoologica, vol. 22, no. 3, p. 70, 1937. 

 Type locality. — Panama Bay, 33 fms. 

 T^^^._USNM No. 21580. 



Range. — From Santa Inez Bay, Gulf of California (Zaca), to 

 Panama (Albatross) ; Galapagos Islands (Albatross) ; 5^-33 fms 

 (Crane). 



Atlantic analogue. — M. spinimanus (Milne Edwards). 

 Diagnosis. — Carapace coarsely areolate. Anterolateral margin cut into 

 4 prominent teeth. Carpus and propodus of walking legs cristate. Manus 

 with a superior crest of lobules. 



Material examined (55 specimens from 18 stations). — 

 55-33. Lat. 1° 03' 30'' S, Long. 90° 17' 30" W, 60 fms, Feb. 5, 1933, 



1 carapace. 

 143-34. Wenman Island, 100-150 fms, Jan. 11, 1934, 7 males, 5 fe- 

 males (1 ovig.). 

 147-34. Tagus Cove, Albemarle Island, 30 fms, Jan. 13, 1934, 2 males. 

 155-34. Tagus Cove, Albemarle Island, 50-60 fms, Jan. 15, 1934, 1 



male, 1 female. 

 156-34. Tagus Cove, Albemarle Island, 80-100 fms, Jan. 15, 1934, 



fragments. 

 170-34. East of Wreck Bay, Chatham Island, 32 fms, Jan. 21, 1934, 



1 male. 

 171-34. East of Wreck Bay, Chatham Island, 35-40 fms, Jan. 21, 



1934, 1 ovig. female. 

 182-34. James Bay, James Island, 30 fms, Jan. 24, 1934, 1 young male. 

 183-34. James Bay, James Island, 50-70 fms, Jan. 24, 1934, 3 males, 



1 ovig. female. 

 201-34. Gardner Bay, Hood Island, 25-35 fms, Jan. 31, 1934, 7 males. 

 324-35. Tagus Cove, Albemarle Island, 45 fms, Dec. 10, 1934, 5 males 

 (1 photographed), 5 ovig. females. 



