162 ENTOMOLOGICAL SOCIETY 



Discussion of the address followed by Messrs. Riley, Fernow, 

 Marx, Schwarz, Smith, Dodge, Banks, and others. 



FEBRUARY 5TH, 1891. 



President Marx in the chair. Nine members present. 



Messrs. Amory Austin and K. R. Tyler were elected active 

 members of the Society. 



Under General Notes, Mr. Schwarz exhibited samples of the 

 fruit of Solatium carolinense which had been infested by a 

 Tineid, probably 'Gelechia beneficentella, and said that this 

 species seems to have been very abundant the past year in the 

 vicinity of Washington. He asked whether this and other 

 insects known to live in the fruit of Solanum carolinense had 

 ever been observed to infest the fruit of the cultivated potato. 



Prof. Riley said that he believed that the fruit of the culti 

 vated potato was usually free from insect attack, and this was 

 accounted for by the fact that the fruit of the wild Solanum 

 spp. remains on the vines over winter, while in the case of the 

 potato the vines are destroyed and the fruit with them. Prof. 

 Riley also called attention to the fact that the potato fruits 

 more abundantly in this country than in Kurope. 



Dr. Marx exhibited from his collection fourteen species of 

 the genus Pholcus Walck., all of which had been found within 

 the limits of the United States. He remarked that heretofore 

 only two species had been known to inhabit this country, 

 namely : Pholcus phalangioides .F. {Ph. atlanticus Hentz.) and 

 Ph. pullulus Hentz. (Theridium pullulum). Of the other 

 twelve species two have been collected in Washington, D. C., 

 one of which has been described by Keyserling as Pholcus 

 cornutus (Neue Spinneu aus Amerika, 1887, No. 7). This 

 very remarkable species bears a pair of thorn-like promi 

 nences upon the front side of the mandibles, and was found 

 by the speaker in his cellar ; the other species from the District 

 of Columbia is yet undescribed, but has been found quite 



