146 Journal of Entomology and Zoolog] 



brown with black hairs. At the age of two weeks the cephalothorax 

 was a dirty brown, the sides had a small black line along the edge, 

 there was the same wide median light brown band extending from 

 the second row of eyes down to the lower margin and on either 

 side of this band was a large gray band. The space around the eyes 

 was black. The abdomen was a dark gray ground color with a light 

 brown median band broken by lines and spots of gray. The hairs 

 were long and black, some oi the hairs on the abdomen being three- 

 fourths as long as the spider. The legs and palpi were light brown 

 with taint gray band on all joints except the coxa, tibia, tarsus and 

 metatarsus. At three weeks of age the abdomen was the only thing 

 changed. It had changed to that oi the adult in color and pattern. 

 Idle leo-s, palpi and cephalothorax were the same as at two weeks of 

 age. At the age of one month the Lycosa young were miniatures of 

 the adult. They were about one-tenth the si/e oi the adult at 

 this age. 



Phillip pus sp. Plate \' 1 1 



I he Attidae studied were large undertermined desert forms of 

 the genus Phidippus and taken in the winter from under rocks. The 

 adults had black cephalothorax with a red spot between the posterior 

 eyes. The abdomen was a reddish brown ground color with a gra^ 

 stripe around the upper margin, and a gray folium at the lower half 

 of the abdomen. The young were very hard to raise and lived only 

 a week in some cases. One set emerged in the winter and lived only 

 a tew days, but from another egg case, young came forth with arti- 

 ficial aid, after being kept seven months. The cephalothorax oi 

 the newly emerged was dark green, the abdomen dark green with 

 two lighter green spots and lines surrounded by black on the for- 

 ward portion oi the abdomen and four dark horizontal lines at 

 the lower part oi the abdomen. The coxa and trochanter oi the 

 legs were gray green, the rest oi the joints were orange yellow. 



Bothriocyrtum Calif ornicum. Plate VIII 



Oi the family Aviculariidae the trapdoor spider was observed. 

 The adult has a chocolate brown cephalothorax with a deeper choco- 

 late brown on the abdomen, the legs being the same color. The 



