1912.] NATURAL SCIENCES OF PHILADELPHIA. 289 



Attidae devoured flies, gnats, larvae and other spiders, but would 

 not touch ants. Synageles picata and Synemosyna formica are 

 always hungry for gnats, but will not eat ants (p. 107). Ants 

 devoured an ant-like spider, Herpyllus, which was placed in a 

 vial with them (p. 109). 

 *Peckham, G. W. and E. G. The Sense of Sight in Spiders with 

 some observations on the Color Sense. Trans. Wis. Acad. Sci., 

 X, 1894-5, pp. 231-261. 



Remarks on food taken in captivity, but nothing in relation to 

 protective adaptations of prey. 

 Plateau, Felix. Observations et experiences sur les moyens de 

 protection de l'Abraxas grossulariata L. Mem. de la. Soc. Zool. 

 de France, VII, 1894, pp. 375-392, 3 figs. 



Experiences avec Araignees, pp. 385-388. 



Spiders, Amaurobius ferox, and Agalena labyrinthica would not 

 touch the larva of Abraxas. Tegenaria domestica attacked the 

 larva, but could not pierce its tough skin. Both Tegenaria and 

 Epeira diadema ate imagos, while Agalena rejected them. 



Experiences avec Carabes et Dytiques, pp. 388-390. 



Carabus auratus, Dytiscus- marginatus, and D. dimidiatus freely 

 devoured Abraxas larvae. 

 *Pocock, R. I. Notes upon the habits of some living Scorpions. 

 Nature, 48, 1893, pp. 104-107. 



They ate cockroaches, blue-bottle flies, etc., in captivity. 

 Pocock, R. I. Further notes and observations on the instincts of 

 some common English Spiders. Nature, 49, 1893, pp. 61-63. 



It was found that the prey of Agalena labyrinthica consists largely 

 of b^es. A Bombus put in a web was enshrouded before it was 

 killed; a blue-bottle fly was pounced upon at once, while a 

 drone-fly (Eristalis) was cautiously attacked and killed, but not 

 enshrouded. 

 *Porter, J. B. The habits, instincts, and mental powers of Spiders, 

 genera, Argiope and Epeira. Amer. Journ. of Psychology, 17, 

 1906, pp. 306-357. 



Experiments with food, but not in relation to protective adapta- 

 tions, are described on pp. 334-338. 



Experiments with Vertebrates. 



fishes. 



In a paper entitled, "An Experimental Field-study of Warning 

 Coloration in Coral-reef Fishes," 8 Prof. Jacob Reighard records a 

 variety of experiments to determine the significance of colors and 

 flavors of prey to gray snappers (Lutianus griseus). The predaceous 

 fishes were free and under normal conditions. The common prey 



8 Papers from the Tortugas Laboratory, Carnegie Institution, Vol. II, 1908, 

 No. 9, pp. 257-325. 



