278 RATHBUN 



one at the middle of the pollex ; and usually also a larger one near the 

 proximal third and another at the distal third of the dactylus. The 

 outer surface of the fingers is smooth through the center, but along the 

 margins more finely granulate than the palm. Proximal end of upper 

 surface of dactylus coarsely granulate. 



The merus, carpus and propodus of the ambulatory legs are orna- 

 mented with fine scabrous granules, which on the meral joints form 

 transverse lines. The merus of the first three pairs is dilated and that 

 of the third pair is nearly three times as long as wide. A few long 

 hairs on the legs in the male ; in the female there is in addition a dense 

 coating of coarse hair on the upper surface of the propodus and a por- 

 tion of the carpus of the third pair of ambulatory legs and on the pos- 

 terior margins of the meri and propodi of the third and fourth pairs. 



Di?nenszons. — Male, length 5.6 mm., anterior width 8.1, width be- 

 tween posterior pair of legs 5, greatest posterior width (inferior) 7; 

 length of propodus of large cheliped of a male about 10.4 mm. wide 

 15.7 mm., length of dactylus of same 11.3, width of propodus 5.6. 

 Ovigerous female, length 6, anterior width ^.S^ width between pos- 

 terior pair of legs 5.4 mm. 



Type Locality. — Mangrove Point, Narboro Island, March, 1S99, 

 6 males and 3 females (U. S. Nat. Museum Cat. No. 24829). None 

 of these males have the cheliped as fully developed as a single soft shell 

 male from Black Bight, Albemarle Island, January 9. 



Family GRAPSID^. 



Grapsus grapsus (Linnaeus). 



Black Bight, Albemarle Island, January 9, 1 male. Tagus Cove, 

 Albemarle Island, February, 3 males, i female. 



Taken previously at the Galapagos ; found also throughout the 

 tropics. 



Geograpsus lividus (Milne Edwards). 



Clipperton Island Lagoon, November 23, 3 males, 3 feinales. 



Distribution. — Florida Keys to Sabanilla, Colombia ; Lower Cali- 

 fornia to Chile; James Island, Galapagos Archipelago {Albatross'). 



Planes minutus (Linnaeus). 



On green sea-turtle at base of tail ; about 200 miles north of Wen- 

 man Island, December S, one large female. 



Pachygrapsus crassipes Randall. 



Tagus Cove, Albemarle Island, 12 fathoms, 2 males, i female. 



