COMPLETE HAIG : EASTERN PACIFIC PORCELLANIDAE 3 



their type locality; for when he worked up the Xantus material only 

 one of the 15 porcellanids represented, Peirolisthes edwardsii (Saus- 

 sure), had been described.^ 



Method of Study 



Of the 85 eastern Pacific species here considered valid, 69 had been 

 described prior to the present study. Types (either holotypes, syntypes, 

 neotypes, or paratypes) of 54 nominal forms, representing 49 of these 

 valid species, were personally examined by the writer; Jacques Forest 

 of the Paris Museum provided information on types of two others. In 

 this way the status of several poorly defined species could be definitely 

 established. Of the 18 valid species for which no types (nor types of 

 their synonyms) were seen, all but one have been well characterized in 

 the literature. The status of Polyonyx nitidus Lockington, described 

 from a single specimen no longer in existence, remains questionable. 



The carcinological collections of Lockington were destroyed in the 

 San Francisco earthquake and fire of 1906. It has been generally sup- 

 posed that this material included all his porcellanid types; therefore it 

 was of great interest to discover that duplicate types of four Lockington 

 species are housed in the Paris Museum. Lectotypes are selected for 

 these species, and will be discussed under the appropriate accounts. 

 According to J. Forest (personal communication), each of the four 

 lots bears the notation "Californie — Lockington 6-99 (Type)" in the 

 handwriting of E. L. Bouvier. Mr. Forest believes "6-99" to be the 

 date on which the specimens were entered in the Museum register. 

 "Californie" for Lockington's "Lower California" is an error of a sort 

 that has often appeared in scientific literature. The importance of dis- 

 tinguishing between California and Lower California cannot be over- 

 emphasized, particularly when the latter designation refers to localities 

 inside the Gulf, which supports a fauna very different from the Cali- 

 fornian one. 



Steve A. Glassell, who made many important contributions to the 

 knowledge of eastern Pacific Porcellanidae, had further studies under 

 way at the time of his death in 1948. The Hancock Foundation's porcel- 

 lanid collection contains a number of lots with notations in Mr. Glas- 

 sell's handwriting, indicating forms he had intended to describe as new. 



^Madden (1949, pp. 108-110) has shown that, contrary to the opinion of 

 certain writers, Xantus must have made all his collections in the general vicinity 

 of Cabo San Lucas during his residence there in 1859-61, and that this locality 

 designation may therefore be accepted in all cases as reasonably accurate. 



