Superfamily Avicularioidea 



of the pedipalp armed on the inside with a sub- 

 basal spine, two submedian spines, and an apical 

 spine. . E. hent^i 



EurypeJma steindacbneri (E. stein-dach'ner-i). — This is the 

 most easily recognized of all of our tarantulas, being characterized 

 by a large velvety brown spot on the otherwise light-coloured ab- 

 domen. It is a large species, the adult measuring from one 

 and one half to two inches in length. There are specimens of 

 both sexes in the collection of Cornell University, and in both 

 the brown spot is present. It is evident, therefore, that what 

 was described by Ausserer as the female of this species belongs 

 to some other species, probably to E. 

 californicum. The species is widely 

 distributed in the Southwest. Fig- 

 ure 225 is of a young individual which 

 I collected in Texas. 



Eurypelma marxi (E. mar'xi). — 

 This species can be distinguished from 

 our other species of Eurypelma by its 

 comparatively small size; the adult 

 measuring only about four fifths inch 

 in length, and the body is entirely 

 black. The tibia of the pedipalp is 

 armed on the inside with only two 

 submedian spines. This species is 

 found in the Southwest. 



Eurypelma belluo (E. hel'lu-o).— 

 This is our largest species, the male measuring two inches in 

 length. The distinctive characteristics are given in the table 

 above. It occurs in the Southwest. 



EurypeJma rusticum (E. rus'ti-cum). — See table above for 

 distinctive characteristics. This species inhabits the Southwest. 



Eurypelma californicum (E. cal-i-for'ni-cum). — This is the 

 most common of the large tarantulas found in California, Arizona, 

 and Texas. See table above for distinctive characteristics. 



Eurypelma hent{i (E. hent'zi). — This is one of the most 

 common tarantulas of the Southern and Southwestern States. 

 It can be distinguished from the preceding species by the charac- 

 teristics given in the table above. 



Fig. 225. 

 EURYPELMA STEINDACHNERI 



24S 



