A List of California Arachnida 



VII. ARANEIDA OR TRUE SPIDERS 



M. Moles, I. Johnson 



AvicuLARllDAE. C'helicera project forward and claw moves vertically. Two 

 pairs of book-lungs. Coxae of pedipalp like the legs, lacks a distinct endite. 



Bothriocyrlum calijornicum Camb. Los Angeles Co., etc. Common trap door 

 spider. 



Eutychides versicolor Simon. Santa Clara Valley. 



Hexura picea Sim. Mariposa Co. 



Brachythele longitarsis Sim. Calif. 



B. Iheveneti Mariposa Calif. 



Atypodes riversi Camb. Black Mt., Calif. 



Eurpelma calijornica Auss. Santa Cruz and south to Claremont. 



E. rileyi Mar. Calif. 



E. leiogaster Auss. Calif. 



E. marx'i Simon. Calif. 



Hexura futva Chamb. Claremont. 



Nemesvides hespera Chamb. Claremont. 



Ambtyocarenum tatpa Bks. Calif. 



Aptostichus atornarius Simon. Calif. 



A. clathratus Simon. 



A. itandfordianus Ch. P. Smith, Saii Francisco Co. 



Avicularia calijornica Bks. Calif. 



Hebestalis t/ierencti Simon. Calif. 



Atypidae. Distinguished from the pievioiis family by more complicated palpus 

 of male. Coxa of pedipalps bears a large conical lobe. They also have a large 

 endite on the coxa of palpus. 



Aliatypns californicus Bks. Santa Clara Valley. 



Ulboridae. Spin orb-webs. Have cribeillum and calamistrum. Dark eyes, lat- 

 eral ones farther apart than the two pairs of median ones. Posterior metatarsi much 

 curved and armed below with a series of spines. 



Ulhorus californicus Bks. Napa Co. and near Claremont. 



DiCTYNiDAE. Cribellum and calamistrum. Anterior median, eyes dark, others 

 white. Lateral eyes on each side nearly touching. Tarsi of legs three claws. Ir- 

 regular web. 



Amaurohius nrvadensis Simon. Northern counties. 



A. nigrellus Chamb. Claremont. 



A. pictus Simon. San Francisco. 



Dictyna sublata Hentz. Lake Tahoe to Claremont. 



D. volucripes Keyser. Palo .Alto to Claremont. 



D. calcarata Bks. San Pedro. 



D. mians Chamb. Claremont. 



