410 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 5 



190-34. Lat. 0° 55' S, Long. 90° 30' W, 58-60 fms, Jan. 26, 1934, 



4 females (1 ovig.) (photographed), 14 young. 

 201-34. Off Gardner Bay, Hood Island, 25-35 fms, Jan. 31, 1934, 2 



specimens. 

 318-35. Off Gordon Rocks, Indefatigable Island, 45 fms, Dec. 8, 1934, 



1 female. 

 346-35. South Seymour Island, 55 fms, Dec. 13, 1934, 1 male, 1 



female. 

 792-38. Off Daphne Minor Island, 70-80 fms, Jan. 20, 1938, 38 young. 

 810-38. (D-2) Barrington Island, 73 fms, Jan. 26, 1938, 1 male, 2 



females. 

 814-38. North of Hood Island, 20-40 fms, Jan. 28, 1938, 5 males, 2 



females, 17 young. 

 816-38. North of Hood Island, 50-100 fms, Jan. 29, 1938, 1 male, 1 

 female, 1 young. 

 Measurements. — Largest female: length 16.3 mm, width 19.5 mm, 

 cheliped 42 mm, chela 18.9 mm. 



Habitat. — Sand, sand and mud, sand and shell, sand and coral ; mud 

 and shell. 



Depth. — 20-100 fms (one shore record). 



Remarks. — P. exilipes is the most abundant of Galapagos partheno- 

 pids, occurring throughout the archipelago at medium depth, 20-100 fms. 



Subgenus Pseudolambrus Paulson, 1875 

 Parthenope (Pseudolambrus) triangula (Stimpson) 



Plate 69, Fig. 1 



Lambrus triangulus Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, 



p. 201, 1860. 

 Parthenope (Pseudolambrus) triangula Rathbun, Bull. 129, U.S. Nat. 

 Mus., p. 528, pi. 278, figs. 1-3. Crane, Zoologica, vol. 22, no. 3, p. 

 65, pi. 5, fig. 18, 1937. 



Type locality. — Cape San Lucas, Lower California. 

 Type. — Not extant. 



Range. — Known only from the type locality. Cape San Lucas, and 

 from San Lucas Bay (Zaca). 



Diagnosis. — Chelipeds less than twice as long as carapace. Carapace 

 an equilateral triangle, definitely widest at posterolateral angle; antero- 

 lateral margin nearly straight, multidenticulate ; 8 or 9 strong teeth on 

 upper margin of chela. 



