Superfamily Avicularioidea 



they occur, it is not possible in the present state of our knowledge 

 to accurately define the species. 



The following table, which is a modification of one published 

 by Simon, will aid in the separation of our better known species: 



A. With a large velvety brown spot on the otherwise light- 

 coloured abdomen. E. steindacbneri 

 AA. Abdomen not light with a brown spot. 



B. Anterior metatarsus shorter than the tibia. All tarsi 

 long, not much shorter than the anterior metatarsus, 

 the posterior only one third shorter. Adults small, 

 the male measuring only four fifths inch in length; 

 body entirely black. E. marxi 



BB. Anterior metatarsus as long as or longer than the tibia. 

 Anterior tarsus about one third shorter than the meta- 

 tarsus, posterior not more than half as long. Adults 

 large. 

 C. Anterior median eyes hardly more remote from each 

 other than from the lateral eyes and the space be- 

 tween the lateral eyes not much less than the diameter 

 of an eye. Posterior median eyes round. E. helluo 

 CC. Anterior median eyes evidently more remote from each 

 other than from the lateral eyes and the space between 

 the lateral eyes barely half the diameter of an eye. 

 Posterior median eyes elongate and straight, not 

 oblique. 

 D. Hairs silky olivaceous. Legs long. Anterior metatar- 

 sus curved and evidently longer than the tibia. 

 Posterior metatarsus more than twice as long as 

 the tarsus. E. rusticum 



DD. Hairs ferruginous. Legs shorter. Anterior meta- 

 tarsus about as long as the tibia. Posterior meta- 

 tarsus about twice as long as the tarsus. 

 E. Posterior median eyes evidently smaller than 

 the lateral eyes; both median and lateral 

 elongate. Tibia of the pedipalp usually armed 

 on the inside with five or six reddish spines. 



E. calijornicum 



EE. Posterior median eyes elongate, lateral subrotund 



and not larger than the posterior median. Tibia 



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