1923] Rathbun, Brachyuran Crabs of West Coast of Mexico 625 



Type-locality. — Off Adair Bay, Gulf of California, Mexico; 17 fathoms; sta- 

 tion 3026, 'Albatross'; 2 females (1 is holotype). 



Type.— Cat. No. 17413, U. S. N. M. 



Measurements. — Female holotype, length of carapace on median line 13.8, 

 length including spines 14.2, width excluding spines 18.3, including spines 21.4 mm. 



Specimens Collected by the 1911 Expedition. — 



Magdalena Bay: Sail Rock, Entrada Point, S. 53° W.; Redondo Point, S. 15° 

 W.; lat. 24° 35' 20" N., long. 111° 59' 35" W.; 13.5 fathoms; S. brk. Sh.; March 

 21; station D5678; 1 d" 1 9- 



Head of Concepcion Bay; April 6; 1 o 71 3 juv. 



A lot containing 1 9, 3 juv., is labeled "Station 5695," obviously incorrect, as 

 the depth at that station is 534 fathoms. 



Range. — Magdalena Bay to Manzanillo, via Gulf of California, to a depth of 

 22 fathoms. 



For description of this species and its relations, see under Pilumnus 

 spinohirsutus, above. 



Pilumnus gonzalensis Rathbun 

 1893, Proc. U. S. Nat. Mus., XVI, p. 240. 



San Francisquito Bay; April 9; 2 9 . 



Eurytium affine (Streets and Kingsley) 

 Panopeus affinis Streets and Kingsley, 1877, Bull. Essex. Inst., IX, p. 106. 

 Pichilinque Bay; March 27; 3^1 9 . 



Eriphia squamata Stimpson 

 1859, Ann. Lye. Nat. Hist. N. Y., VII, p. 56 [10]. 

 Agua Verde Bay; April 1; 1 cf 1 9 . 

 Pichilinque Bay; March 27; 5 d 71 8 9 (3 ovigerous). 

 Mazatlan; 1 propodus of right cheliped. 



PlNNOTHERIDiE 



Pinnotheres jamesi, 1 new species 

 Plate XXIX, Text Figures 1 and 2 



Type-locality. — Pichilinque Bay, Lower California; by electric light; 1 male. 



Type.— Cat. No. 57005, U. S. N M. 



Measurements. — Length of carapace of type male 3.7 mm., width the same. 



Diagnosis of Male. — Carapace hard, nearly circular, bordered with hair 

 around lateral angles. Last leg very much smaller than the others. Male abdomen 

 extremely long and narrow. 



Description of Male. — Carapace subcircular, inclining toward the hexagonal, 

 broadest at the middle of its length; evenly convex in all directions; surface smooth 

 and shining except for a narrow border of pubescence, 1.4 mm. long, embracing the 



Tor Mr. Arthur Curtiss James, a patron of the expedition. 



