136 Journal of Entomologj and Zoologj 



which the young may be identified by the color pattern and color. 

 rhere have been few sources from which any material upon this 

 subject could be found. Comstock in his "Spider Book" makes no 

 note of the color changes, but McCook makes the following ob- 

 servations: "With each moult spiders undergo a change in color 

 and patterns more or less decided; but some undergo such decided 

 changes that different species have been established for the same 

 spider upon specimens taken after different moulting periods. In 

 some species the color and markings ot the younglings, after the 

 first moult or two, fairly represent the markings oi the adult at 

 maturity ; in others the difference is so great between the two stages 

 ot life that it is quite impossible to identify young individuals or 

 distinguish the young ol several species with accuracy." 



The female colors predominate through all the young, the im- 

 mature males in the most cases taking the colors and markings ot 

 the female until the last moult, when thc\ then take on the mark- 

 ings and characteristics ot the adult male. 



In the following pages ot the paper there will be found a de- 

 scription of the different stages ot the spiderling ol different species, 

 especially in reference to the different color stages... 1 he dorsal 

 side of the spider has the color pattern, therefore it will be the 

 surface which is always described. 



Pew • is I lent/. Plates 1.11 and 1 1 1 



The color markings ot the adult female were very brilliant and 

 beautiful. The eye space is black, the cephalic part ot the ccphalo- 

 thora\ is light yellow with red and brown markings, the thoracic 

 region is a dark green ground color with two red lines running down 

 .\\\d around the sides ot it. There is a median brown line extending 

 from the eye space to the lower edge ot the cephalothorax. The 

 abdomen has a dark brown ground color with tour white spots, the 

 lower two ot which arc edged with red. On the upper halt ot the 

 abdomen are two orange stripes flecked with red and separated by 

 a light green stripe with a darker one in its center. The lower 

 halt of the abdomen has two light green and two yellow g 

 stripes on cither side ot the median line. There arc numerous 

 flecks of red all over the dark green on the abdomen. The spin- 



