Pomona College, Claremont, California 151 



EXPLANATION OF FIGl RES 



Plate I — Peucetia viridans: 



Adult female. X4. 



Plate 11 — Peucetia viridans: 



Fig. B. Young, 3 days old. X20. 



Fig. C. Young, 13 days old. X20. 



Fig. D. Young, 22 days old. X- 1 ". 



Fig. E. Young, 39 days old. X20. 

 Plate III — Peucetia ■viridans: 



Fig. A. Adult female. X4. 



Fig. B. Young, just emerged. X20. 



Fig. C. Young, 25 days old. X20. 



Fig. D. Young, 34 days old. X20. 

 Plate IV — Aranea gemma: 



Fig. A. Adult female. X2 x / 3 . 



Fig. B. Young, just emerged. X10. 



Fig. C. Young, 3 weeks old. XI 0. 



Fig. D. Young, 4 months old. XI 0. 

 Plate V — Latrodectus mactans: 



Fig.A. Adult female. X5. 



Fig. B. Young, 13 days old. XI 5. 



Fig. C. Y'oung, 20 days old. X15. 



Fig. D. Young, 34 days old. XI 5. 



Fig. E. Young, 41 days old. X15. 



Plate VI — Lycos a sp.: 



Fig. A. Adult female. X4. 



Fig. B. Young, just emerged. X\2. 



Fig. C. Young, 3 weeks old. XI 2. 

 Plate VII— Phidippus sp.: 



Young, just emerged. X20. 

 PI ate VII I — Bothriocyrtu m Calif ornicum : 



Fig. A. Adult female. X2. 



Fig. B. Young, 3 days old. X20. 



Fig. C. Young, 1 month 3 days old. X20. 



Fig. D. Young, J months 6 days old. XJ(>. 



Fig. E. 3 months 6 davs old. X20. 



