1870.} 221 [Scudder. 



March 2, 18T0. 



Vice President, Dr. C. T. Jackson, in the chair. Thirty nine 

 persons present. 



The following papers were presented : — 

 Description of the Larya and Chrysalis of Papilio Rtj- 



TULUS BOISD., OF CALIFORNIA. By SAMUEL H. SCUDDER. 



By the kindness of Mr. Henry Edwards of San Francisco, I have 

 been favored with two specimens of the chrysalis of Papilio Rutulus 

 Boisd., of California, and with a colored drawing of the full-grown 

 caterpillar, made by Mr. R. H. Stretch; their resemblance to the 

 early stages of our common P. Turnus gives them an additional 

 interest to entomologists of the Eastern States, and I therefore publish 

 the following descriptions from the material above mentioned. 



Larva resembling perfectly in form and general appearance that of 

 P. Turnus ; the general tint of both head and body apple green, 

 but the last two segments above, and. the posterior third of the body 

 at the sides, become gradually much paler; thoracic segments tinged 

 above with purplish, the third, segment with a dorso-lateral, transverse, 

 double, circular spot, each portion formed of a minute yellow spot, 

 encircled with black; also with a small, round, distant, subdorsal, yel- 

 lowish spot; fourth segment with a small, square, dorso-lateral and a 

 small, round, distant, subdorsal, dark blue spot; the suture between 

 the fourth and fifth segments is bordered rather broadly around half 

 of the upper portion of the body with a bicolored band, terminating 

 squarely at the end; in front of the suture it is yellow, behind, 

 blackish blue. The stigmata are marked with blue, and there is a 

 subdorsal and lateral row of blue dots on the seventh to the tenth 

 segments. Prolegs paler than the general hue of the body. Length, 

 when contracted, 35.5 mill. 



Chrysalis. The two specimens referred to differ greatly in size 

 and color, the larger one having brownish grey and blackish fuscous, 

 the smaller apple green and yellowish brown markings. There 

 is a rather broad stigmatal band, commencing at the tip of the ab- 

 domen, and continuing forward along the hinder edge of the wings 

 to the eye, of a blackish fuscous or yellowish brown color; spiracles 

 of the color of the band ; a very broad dorsal band of the same 

 color, but paler in tint, and especially so, anterior to the mesonotal 



