Till-. SJIORT-T.lII.lil) Sir.lfJ.dirT.llL. (I'apilio iiulra, 



Kcak. ) 

 I'lato III. Fi^s. 6 and 7. nialcs; \'"u^. S. female. 



EPll'.lh'n'S Sir.llJ.OU'T.Uf.. ( r. indra i)iM-gamus. 



Ily. Kdw.) 



Plate n. Figs. 1 and 2, males; Fig. 3, female. 



This species occurs in two forms, tlic northern race or Short- 

 Tailed SwaUoii'taiL which is taken in the high Sierras of northern 

 to central California, and the southern race, Edxvard's Swallowtail 

 which flies in the southern Sierras. Both varieties are consid- 

 ered highly desirable from the collector's standpoint, the southern 

 race particularly being counted as a great ])rize. Edxvard's 

 Szi'allowtail has been captured as early as A])ril, while in the 

 higher Sierras the species does not emerge until June or July. 

 The larvae feed on umbelliferous plants. 



THE WESTERN TIGER SIVALLOJFTAIL. (Papilio 



rutulus, Luc.) 



Plate IV, Figs. 6 and 8, males ; Fig. 7, female. 



THE WESTERN TIGER SWALLOWTAIL is our most 

 common Papilio occurring throughout the entire state, and flying 

 from early spring to late summer. The larvae choose a wide 

 variety of foodplants, including poplar, alder, hop and willow. 

 An alpine form has been distinguished by Behrens, which he has 

 called ainmoni. It differs principally in the darker shade of yel- 

 low forming the ground color of the wings. 



(To be continued) 

 (Plate IV will appear in the next issue of the BULLETIN.) 



