COMPLETE HAIG : EASTERN PACIFIC PORCELLANIDAE 45 



Color: Cherry red, dotted with rounded white and bluish dots and 

 rings, chelae cherrj' red, the tubercles showing as white dots. (Kinahan) 

 Carapace, external maxillipeds, sternal plastron, abdomen, and legs red 

 spotted with yellow. (H. Milne Edwards and Lucas) 



Ecology: This species has been taken in the littoral on rocky reefs 

 and dredged in about 8-20 fathoms, with the substrate not recorded. 

 An ovigerous female in the Hamburg Museum collection was recovered 

 in December. 



Remarks: In her report on the anomuran crabs of Chile (Haig, 

 1955), the writer suggested that the species inadequately described by 

 Guerin (1835) as Porcellana desmarestii Eydoux and Gervais might be 

 identical with Petrolisthes acanthophorus (H. Milne Edwards and 

 Lucas). It is now believed that this is definitely the case, and Porcel- 

 lana acanthophora H. Milne Edwards and Lucas is therefore placed in 

 the synonymy of Petrolisthes desmarestii. Furthermore, the name des- 

 marestii is attributed to Guerin, rather than to Eydoux and Gervais 

 as was done previously. Where it is clearly stated in a work written by 

 one author that the description of a taxon named therein was prepared 

 exclusively by some other person or persons, the name of that taxon is 

 to be attributed solely to that other person or persons (Bull. Zool. 

 Nomen., vol. 4, p. 566, Concl. 49 (1) (b) ; Copenhagen Decisions 

 Zool. Nomen., p. 59, par. 103 (2)). However, in this case there is no 

 indication that the description was prepared by Eydoux and Gervais; 

 only the name was attributed to them, for no apparent reason, by Guerin 

 (1835, 1838b, 1839). 



The species seems to have been rarely collected, in spite of its ex- 

 traordinary size. It is probably more abundant in deeper water. 



Range: Callao, Peru, south to Coronel, Chile. Known from shore to 

 about 20 fathoms. 



Petrolisthes hirtispinosus Lockington 

 Plate 19, fig. 1 



Petrolisthes edwardsius, Lockington, 1878, pp. 396, 400. Not P. 



edwardsii (Saussure). 

 Petrolisthes hirtispinosus Lockington, 1878, p. 400 (type locality, Bahia 



Mulege, Gulf of California). Glassell, 1937, p. 80; 1938a, p. 444. 



Steinbeck and Ricketts, 1941, p. 457. 

 Petrolisthes hirtispinosus? , Schmitt, 1924b, p. 384. 



