234 The Ohio Journal of Science [Vol. XX, No. 7, 



this insect was plentiful. The spider came from the retreat 

 when the insect was thrown upon the web but seldom ever 

 tried to capture it. One day I killed one of these beetles and 

 threw it upon the web. Two hours afterward I came back and 

 found the spider had eaten the soft parts of the beetle. Similar 

 experiments were tried with Coccinellidae but the spider allowed 

 the beetle to escape. I think this spider will eat beetles if it 

 cannot get other food. The fact that few such insects were 

 found in their webs is due to the abundant supply of grasshop- 

 pers which formed their chief food supply. Later in the year 

 Phytonomus punctatiis was sometimes found in the web of this 

 spider. This beetle had a strongly chitinized body wall and if 

 this is eaten I think other beetles would be captured if no other 

 food could be obtained. 



Several hundred webs were examined but spiders were feed- 

 ing in a very small per cent of the webs. The following data is 

 given on the two hundred and twenty-one webs in which spiders 

 were seen feeding. 



53% contained Grasshoppers; *12% contained Ants; 8% contained 

 Jassidae; 7% contained Capsidse; 4% contained Syrphidas; 3% con- 

 tained Drasteria erechta and Drasteria crassiuscula ; 2% contained 

 Gryllus abbreviatus; 2% contained Culex pipiens; 2% contained Har- 

 vestmen and spiders ; 1% contained Phytonomus punctatus ; 1% 

 contained Ceresa bubalus; 1% contained Sapromyza lupulinte; 1% 

 contained Fulgoridas; 1% contained Tipulidge; 2% all other insects. 



Coras medicinalis Hentz. 



This spider is named Coras medicinalis by Professor Com- 

 stock, Emerton places it in another genus and calls it Coeletes 

 medicinalis. It is a grayish spider about half an inch in length 

 and lives in hollow trees, under blocks of wood and in crevices. 

 The web is similar to Agelena ncevia and has a funnel retreat. 



One specimen was kept in captivity four months and the 

 food records are given on this single individual. 



*The percentage of ants is higher than it would normally be, but is given 

 according to the data collected. The spiders which ate these ants had their webs 

 in a clearing around stumps. The ants captured were kings and queens which 

 became entangled in the webs at mating time. This data on the ants was collected 

 in a restricted area and was not obtained over a large area of varied conditions as 

 the rest of the data was. I have watched the workers of several colonies of ants 

 run around over the webs of spiders which were near the ants' nests and the spiders 

 paid no attention to the ants at all, so it is my opinion that Grasshoppers, Capsids 

 and Jassids are preferred to ants ordinarily. 



