PART 1 GARTH : PACIFIC OXYRHYNCHA 223 



and compressed and armed with a tooth or lobe on its inferior margin, 

 against which the small acute dactylus closes. Abdomen in the male 

 six- [segmented]. (Miers, 1886) 



Range: Pacific coast from Santa Maria Bay, Lower California, 

 Mexico, to Valparaiso, Chile, including Revilla Gigedo and Galapagos 

 Islands ; Atlantic coast from Miami, Florida, to Rio de Janeiro, Brazil. 

 Occurs also off West Africa, in the Mediterranean Sea, and in the 

 Indo-Pacific east to Hawaii. 



Contains but one American species, which is common to both coasts. 

 Shore to 16 fathoms. 



Acanthonyx petiveri Milne Edwards 

 Plate O, Fig. 3 ; Plate 25, Fig. 2 



Cancer muricatus compressum Petiver, 1712, pi. 20, fig. 8. 

 Acanthonyx petiverii Milne Edwards, 1834, p. 343. Bell, 1835b, p. 173; 



1836, p. 62. DeHaan, 1839, pi. G. White, 1847, p. 11. Dana, 1852, 



p. 128; 1855, pi. 5, figs. 6a-d. Smith, 1869, p. 33. Miers, 1877, 



p. 654; 1886, p. 42. A. Milne Edwards, 1878, pi. 27, figs. 7, 7a-f. 



Cano, 1889, pp. 99, 100, 176. Rathbun, 1894, p. 72; 1901, p. 60; 



1907, p. 72; 1910, pp. 534, 571, pi. 46, fig. 4; 1925, p. 142, pi. 44; 



pi. 222, figs. 1-6. Boone, 1927, p. 137, fig. 38. Finnegan, 1931, 



p. 620. Hult, 1938, p. 11. Garth, 1946, p. 376, pi. 63, fig. 4. Crane, 



1947, p. 71. Buitendijk, 1950, p. 271. 

 Acanthonyx emarginatus Milne Edwards and Lucas, 1843, p. 9, pi. 5, 



fig. 2 ; type locality, near Lima, Peru ; type in Paris Museum. 

 Acanthonyx debilis Dana, 1851a, p. 272; 1852, p. 127; 1855, pi. 5, 



figs. 5a, 5b; type locality, Valparaiso, Chile; type not extant. 

 Peltinia scutiformis Dana, 1851a, p. 273; 1852, p. 130; 1855, pi. 5, 



figs. 7a-c ; type locality, Rio de Janeiro ; type not extant. Smith, 



1869, p. 33. 

 Acanthonyx concamerata Kinahan, 1857, p. 334, pi. 14, fig. 1 ; type 



locality, North Chinchas Islands, Peru ; type in Royal Dublin 



Society Museum. 

 Acanthonyx petiveri, Stimpson, 1871a, p. 97. A. Milne Edwards, 1878, 



p. 143 and synonymy. Garth, 1957, p. 22. 

 Pugettia scutiformis, Miers, 1886, p. 40, footnote. Moreira, 1901, pp. 



65, 138; 1920, p. 126. Lenz and Strunck, 1914, p. 276, pi. 12, 



figs. 5-7. 



Type: Holotype in Paris Museum. Male, length 18 mm, as verified 

 by J. Forest. 



