28O ANNIE H. PRITCHETT. 



ARACHNIDA. 



Lathrodectes mactans. November 17, November 29, Decem- 

 ber 6 (two), December 18 (four), January 20 (two), February 2 

 (two), March 9, March 11, March 17, March 25, March 30, 

 April 6, April 13 (four), April 20 (three), May 19 (two). These 

 spiders are of a jet black color conspicuously marked with 

 crimson or sometimes white, thus exhibiting striking warning 

 coloration. They are even said to be poisonous, yet they were 

 always quickly seized and eaten by these lizards. 



Attus mystaccus. December 10, December 12 (two). The 

 somber gray color of these spiders affords them good protection 

 under the stones where they live. They were eaten eagerly. 



Lycosa sp. March 9, March 23 (two), March 25. This spider 

 resembles very closely in color the underside of the stones where 

 it is often found. It was eaten at once when introduced. 



SCORPIONS. 



Centrums caroliniensis Beauv. January 20, March 17, March 

 23 (two), April 13 (three), April 20 (six), April 27 (five), May 4, 

 May 1 8 (six), May 19 (two), May 25 (two). All these speci- 

 mens were eaten with evident relish and no attention was paid to 

 the sting. The hard integument of the lizard prevents the pene- 

 tration of the sting. 



^5 



MYRIOPODA. 



Jnlns ( Spirobohis] multistriatus Walsh. The specimen was in- 

 troduced November 18 and died January 7. It was not noticed 

 by the lizards, as was also the case with two specimens intro- 

 duced February 1 2. 



EXPERIMENTS WITH CROTAPHYTUS COLLARIS Say. 



Two of these lizards were captured November 9 and were not 

 seen to eat a single insect until February I 2. Various kinds of 

 insects were placed in the cage, and though the lizards were 

 quite tame and lively they would not eat. On January 233 dish 

 of water was placed in the cage and they learned to drink from 

 the dish and also from the pipette used for refilling it. The water 

 furnished their only nourishment for three months. A third 

 lizard was captured April 4 and though very fierce at first, 



