COMPLETE HAIG: EASTERN PACIFIC PORCELLANIDAE 97 



The Lund University Chile Expedition specimens were seen again by 

 the writer, and those in the Hamburg Museum were examined by Dr. 

 A. Panning. On the basis of these re-examinations a part of the ma- 

 terial previously recorded as P. laevigatas is here transferred to 

 the present species. 



It now appears that PetroUsthes granulosus finds its southern limit 

 at about 36° 40' S, and P. laevigatus its northern limit at about 30° S ; 

 the intervening territory is an overlap area in which the two species 

 sometimes occur together. 



Specimens of PetroUsthes granulosus collected by the Hassler at 

 Islas Juan Fernandez are the first porcellanids to be reported from 

 those islands. 



Range: Paita, Peru, south to Bahia de San Vicente, Chile; Islas 

 Juan Fernandez. 



Petrolisthes laevigatxis (Guerin) 

 Plate 28, fig. 2 



Porcellana laevigata Guerin, 1835, p. 115 (type locality, Chile) ; 1838b, 



p. 6; 1839, p. 174. H. Milne Edwards and Lucas, 1844, p. 34. 



Nicolet, 1849, p. 195. 

 Porcellana valida Dana, 1852, p. 415; 1855, pi. 26, figs. 5a-b (type 



locality, ?Valparaiso, Chile). Cunningham, 1871, p. 495. 

 Petrolisthes validus, Stimpson, 1858, p. 227. Henderson, 1888, p. 105. 



Cano, 1889, pp. 96, 99, 257 (part; not Callao record). Murray, 



1895, pp. 1120, 1166. 

 [Petrolisthes^ laevigata?, Stimpson, 1858, p. 228. 

 Petrolisthes laevigatus, Ortmann, 1897, p. 277, p. 278 (part). Porter, 



1936b, p. 153; 1936c, p. 339. Haig, 1955, pp. 42, 45 (part). 

 Petrolisthes (?) laevigatus, Rathbun, 1910, p. 600 (part). 

 Petrolisthes granulosa, Boone, 1938, p. 273, pi. 108 (not all synonymy). 



Not P. granulosus (Guerin). 



Previous records: Chile. "Chile": Favorite (Guerin). Peninsula 

 de Coquimbo: Lund Univ. Chile Exped. (Haig). Valparaiso: (H. Milne 

 Edwards and Lucas) ; Challenger (Henderson). PValparaiso: U.S. 

 Expl. Exped. (Dana). San Antonio: Lund Univ. Chile Exped. (Haig). 

 Bahia de Talcahuano: (Nicolet). Bahia de San Vicente; Golfo de 

 Arauco: Lund Univ. Chile Exped. (Haig). LotaiNassau (Cunningham). 

 Seno Reloncavi; Estero Reloncavi ; Canal Chacao; Golfo de Ancud; 

 Golfo de Quetalmahue; Bahia de Ancud: Lund Univ. Chile Exped. 



