518 PROCEEDINGS OF THE NATIONAL MUSEUM. 



tan; at La Palma, 1,500 meters, February, 1896, also by Mr. Tristan; 

 aud at Pacaca, Kodeo, 785 meters. A series of this species is iu the 

 British Museum, without indication of locality. 



Type.— No. 19484, U.S.N.M.; one male; Cachi. 



Habits.— Mr. J. Fid Tristan, of the National Museum of Costa Rica, 

 writes thus concerning this species: 



111 La Palma, for instance, 1 found some in a small pond, near a bouse, in which 

 the crabs have stationed themselves to feed on the refuse of meals, etc., that are 

 from time to time thrown in. I saw that tbe.v showed preference for tlie cooked 

 maize, and as soon as a morsel is thrown in the water to them they start from their 

 hiding places to secure it, and then return to devour it at home. They also eat 

 soap, which act surprises me, because of the caustic nature of the article. 



PSEUDOTHELPHUSA NOBILII, new species. 



Pseudothelphusa (/racilijyea Nobili, Boll. Mus. Zool. Torino, 1897, XII, No. 275, p. 

 [4]. Not Boacia gracilipes A. Milne-Edwards, Ann. Soc. Entom. France, 

 1866, 4th eer., VI, p. 204. 



Superior margin of front tuberculate,notT{eeIed; cervical suture straight; 

 merus of maxilliped narrow^ outer margin oblique; ambulatory legs slen- 

 der. 



Differs from gracilipes in its narrower carapace; straight cervical 



suture directed more longitudinally than in gracilipes; bilobed superior 



frontal margin; in the sinuous lower margin of 



the propodus of the chelipeds, the propodus 



being widest at the middle of the palm (fig. 8, i), 



and not at the articulation with the dactylus, 



as in gracilipes; in the shorter ambulatory legs; 



in the reduction of the exognath to a short stump 



(fig. 8, c), while in gracilipes it extends three- 



NOBiui, FEMALE, o. FRONT, fourths the leugth of the ischium. 



NATDBAL SIZE. h. LAifGEE Dimensions. — Female : Length, 16.5 mm. ; width, 



CHELA, NATURAL SIZE. oo <- V • <- 1 • 1 il, 1 K C „ „ 



c. MAXILLIPED, X 2j. 28.a mm. ; exorbital width, 15.5 mm. 



Type.— 'No. 20041, U.S.N.M. ; one female. Gua- 

 laquiza, Ecuador; Dr. Enrico Festa. 



Additional localities {after N'obili). — Ecuador : Valle del Rio Santiago; 

 San Jose de Cuchipamba; Valle del Rio Zamora. 



This species was sent to the U. S. National Museum by the Museum 

 of Turin, through Mr. Joseph N'obili, who expressed doubts as to the 

 correctness of its identification and has permitted me to include it 

 among the new species here made known. 



PSEUDOTHELPHUSA BOUVIERI, new species. 



Superior margin of front tubercu late, not keeled; cervical suture straight; 

 merus of maxillipeds narrow, outer margin oblique; ambulatory legs not 

 slender. 



Very near P. chilensis ; differs as follows: Carapace wider than in 

 chilensis. Cervical suture straight instead of curved. Front propor- 



