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. 



Bothriocyrtum californicum Camb. Los Angeles Co., etc. Common trap door 

 spider. 



Eutychides ^'ersicolor Simon. Santa Clara Valley. 



Hexura picea Sim. Mariposa Co. 



Brachythele longitarsis Sim. Calif. 



B. theveneti Mariposa Calif. 



Atypodes riversi Camb. Black Mt., Calif. 



EuTpelma calijornica Auss. Santa Cruz and south to Claremont. 



E. riUyi Mar. Calif. 



E. leiogaster Auss. Calif. 



E. marxi Simon. Calif. 



Hexura julva Chamb. Claremont. 



Nemesoides hespera Chamb. Claremont. 



Amblyocarenum talpa Bks. Calif. 



Aptostichus atomarius Simon. Calif. 



A. claihratus Simon. 



A. standfordiiinus Ch. P. Smith, San Francisco Co. 



Aficularia calijornica Bks. Calif. 



Hebestatis thereneti Simon. Calif. 



ArypiDAE. Distinguished from the previous 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. 



Aliatypus californicus Bks. Santa Clara Valley. 



ULBORmAE. 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. 



Vlhorus calif fjrniciii' Bks. Napa Co. and near Claremont. 



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

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

 regular web. 



Amaurobius nefadensis Simon. Northern counties. 



A. nigrellus Chamb. Claremont. 



A. pictus Simon. San Francisco. 



Dictyna sublata Hentz. Lake Tahoe to Claremont. 



D. I'olucripes Keyser. Palo ."Mto to Claremont. 



D. calcarala Bks. San Pedro. 



D. mians Chamb. Claremont. 



