396 ENTOMOLOGICAL SOCIETY 



semi-tropical Florida, viz.. Euproctus trivittatus, Onota ftori- 

 dana and Plochionus dorsalis, are strictly tree-inhabiting species. 



Mr. Schwarz also exhibited specimens of a staphylinid, Am- 

 phichroum tcstaceum, found abundantly this spring in British 

 Columbia. Many specimens were seen in copula, and it was 

 found that, in addition to the difference in the form of the middle 

 tibia?, the males have the last joint of the maxillary palpi dis 

 tinctly securiform. Other species of the same genus possessed 

 the same sexual difference, and it was evident that the genus 

 Pelecomalium Casey which was founded solely upon this char 

 acter had to be suppressed. 



Mr. Schwarz also drew attention to an individual peculiarity 

 in certain staphylinid genera with verv slender terminal joint of 

 the maxillary palpi, e. g., Tachinus and Tilea. Here a speci 

 men could occasionally be found in which the last joint of the 

 right or left palpus, or of both palpi, terminated in a little knob 

 or disk. No specific importance should be attached to this char 

 acter. 



Prof. Fernow referred to a letter which he had recently re 

 ceived from the director of the field-work of the Gypsy Moth 

 Commission of Massachusetts, stating that not lessthan eight tons 

 of the improved German insect-lime had been imported and that 

 its application in the form of rings around the trunks of trees had 

 given satisfactory results. A detailed account of these experi 

 ments would be published by the commission. 



Mr. Ashmead exhibited a species of Oa/^&.yForster,* a genus 

 of the family Chalcididae previously not known to occur in North 

 America. 



DECEMBER i, 1892. 



The eighty-fifth regular meeting and the eighth annual meet 

 ing. 



President Riley in the chair. Seventeen members present. 



Mr. Frank Benton, U. S. Department of Agriculture, Wash 

 ington, D. C., was elected an active member of the Society. 



* Subsequently described by Mr. Ashmead as C. flelcheri (Can. Ent., 

 24, 1892, p. 309). 



