78 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



COLOR VARIATION IN PUPAE OF TERIAS NICIPPE CRAMER. 



BY GEO. G. AINSLIE, 



United States Entomological Laboratory, Knoxville, Tenn. 



Iii a note in the first volume of Entomological News, page 129, 

 Dr. H. Skinner mentions the variation in the color of the pupae of 

 Terias nicippe Cramer and states that he found both green and 

 black pupae. Scudder, in his "Butterflies of the Eastern United 

 States," makes a similar observation, some of his specimens being 

 mottled. All those reared disclosed normal adults. 



A further observation was made by the writer at Hartsville, 

 Tennessee, in August, 1913. Larvae of this species were found 

 feeding on plants of Cassia tora and C. marylandica. Supposing 

 them to be those of Eurymus eurytheme which they closely re- 

 semble, a number were collected and placed in cages on alfalfa, 

 clover and various other plants. The immature larvae died 

 without feeding, the rest pupated suspended in their normal po- 

 sition on the various plants with which they were confined. The 

 pupae thus obtained and an additional series taken in the field 

 at the time of the original collection present an interesting range 

 in coloration. Pupae formed on the leafy parts of the normal 

 food plants are green. In this series those formed on the caged 

 plants of alfalfa, clover, etc., were also green but of a shade 

 agreeing exactly with that of the particular plant on which they 

 were found. One pupa found in the field suspended close to and 

 partly from one of the yellow flowers of Cassia tora was of a uni- 

 form yellow color, matching the flower. From some plants 

 growing close to an old rusty wire fence some larvae had mi- 

 grated to the fence and had pupated suspended from the wires. 

 These pupae varied from Brown to black in color, in each case 

 agreeing closely with the color of the wire from which it hung. 

 All the pupae developed into normally colored butterflies. 



THREE HUNDRED AND FIRST MEETING, 

 FEBRUARY 8, 1917. 



The 301st regular meeting of the Society was entertained by 

 Mr. C. L. Marlatt at the Saengerbund Hall, February 8, 1917. 

 There were present Messrs. Back, Baker, Barber, Borden, Boving, 

 Busck, Cole, Gary, Craighead, Crawford, Cushman, Dietz, Ely, 

 Fink, Fisher, Garman, Gill, Greene, Heinrich, Hyslop, Isely, 



