2o8 Annals Entomological Society of A^nerica [\'"ol. I, 



Cambridge, of England, published Cteniza calif ornica in 1874, 

 and nine years later, Atypoides riversi. Anton Ausserer, of 

 Vienna, has published (1871-1875) four species of Eurypelma, 

 one the same as E. hentzi Girard, and two from the manuscript 

 of Doleschall. Prof. Geo. Atkinson, of Cornell University, was 

 the next American to add to the literature upon these forms, 

 describing seven species in 1886, all from Virginia and North 

 Carolina. At least two of these had been already described. 

 Geo. Marx (1888) and Nathan Banks (1896), both of Washing- 

 ton, D. C, have each described one species. Eugene Simon, of 

 Paris, who has made a more comprehensive study of the spider 

 fauna of the world than any other student, has described eighteen 

 North American species. Cambridge and Atkinson have added 

 to their descriptions accounts of the ecology of the forms they 

 describe; but many of the species have not had their habits and 

 haunts investigated and recorded, indeed many of them, 

 apparently, have not been collected, or recorded since the 

 original descriptions appeared. 



Four listings of the North American species of the Araneae 

 theraphosae have been made. Geo. Marx (1889), in his "Cata- 

 logue of the Described Araneae of Temperate North America," 

 lists 29 species. Simon, in his "Liste des Especes de la Famille' 

 des Aviculariides qui habitent I'Amerique du Nord" (1891), 

 enumerates 37 species, 18 of which are his own, and 13 of which 

 are therein described for the first time. Nathan Banks (1892), 

 in his paper entitled, "Our Atypidae and Theraphosidae", 

 recognizes but 23 species, he evidently not having considered 

 Simon's paper of the preceding year. Lastly, J. H. Comstock 

 (1903) in his publication, "A Classification of North American 

 Spiders," lists 36 species; or 37 if Simon's reference to an Avicu- 

 laria from San Diego be considered. 



Of these 37 forms, 18 are attributed to the Pacific Coast, 17 to 

 California. i\ll have been described by men situated in the 

 Eastern United States or in Europe, from material sent to them. 

 It is no wonder, therefore, that our species have been described 

 mostly from meagre and young material, and the ecology of so 

 few has been recorded. 



The following list sums up the species reported from California, 

 embodying the redistribution of certain forms, as found necessary 

 from the study of my material: 



