552 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49. 



male collected measured 24.2 mm. long and 30.5 mm. wide; the 

 largest female, 27 by 33 mm. Sixty-eight specimens were taken. 

 This species ranges southward from Colombia through Venezuela and 

 Guiana into Brazil. 



TRICHODACTYLUS (DILOCARCINUS) PICTUS (Milne Edwards). 



A single male was collected under a pile of leaves in the Fundacion 

 Kiver August 12. It measured 10.4 mm. long by 11 mm. wide. 

 This species is found in Colombia, Guiana, Brazil, Paraguay, and on 

 the upper Amazon; Young ('00) says also in Peru. 



TRICHODACTYLUS (TRICHODACTYLUS) QUINQUEDENTATUS Rathbun. 



This crab was abundant in little pools along the margins of the 

 streams near "La Rosa." It also was common with T. dentatus at 

 Fundacion around swamps and in small streams. Females carrying 

 eggs were taken at Fundacion August 8 (1) and on August 11 (4). 

 On the latter date a male and female were found together in a hole 

 under a log. The largest female measured 19.8 by 23.5 mm. One 

 hundred specimens were collected, the largest being a male measuring 

 20.9 by 25.5 mm. The range of this species is from Colombia to 

 Nicaragua. 



PSEUDOTHELPHUSA PEARSEI Rathbun. 



Plate 70. 



Pseudothelphusa pearsei Rathbun, Proc. Biol. Soc. Washington, vol. 28, 1915, 

 p. 95. 



This land crab was abundant on and near the Cincinnati Coffee 

 Plantation. It was collected in the forest at altitudes from 3,500 to 

 5,000 feet in a great variety of habitats — walking over the ground 

 during rains, on land under logs or stones, in brooks under stones, in 

 burrows under stones along streams. 



Paraty pes. —C&t. Nos. 47950, 47952, 47953. 



PSEUDOTHELPHUSA CLAUSA Rathbun. 



Plate 71. 



Pseudothelphusa clausa Rathbun, Proc. Biol. Soc. Washington, vol. 28, 1915, 

 p. 98. 



Quite a common species at the Cincinnati Coffee Plantation. Its 

 altitudinal range was from 4,000 to 4,800 feet, and its habits similar 

 to P. pearsei. 



Paratypes. —Csit. No. 47951, U.S.N.M. 



PSEUDOTHELPHUSA ANGULATA Rathbun. 



Plate 72. 



Pseudothelphusa angulata Rathbun, Proc. Biol. Soc. Washington, vol. 28, 1915, 

 p. 98. 

 This species was collected only once under stones at the edge of a 

 brooklet in the forest above Minca; altitude, 2,900 feet. 



