( 342 ) 



like ordinary modetita modesta. According to Hy. Edwards, I.e., tlie ('alifoniian 

 siieciuicus of i/iodesta are much jialer iu ground-colour, differing markedly from 

 the eastern form. He unites with tliem Arizona specimens, which are indeed 

 conspicuonsly dill'erent from Atlantic examples. It is possible that Edwards had, 

 besides Arizoua specimens, only iudividuals of a second brood from California, 

 which we presume are all or partly paler than those from hibernated ])upae. If 

 that was the case the name P. modesta modesta f. t. occidcnttiUs may be employed 

 for them, and f. t. inodcsta for the ordinary dark form. 



The amoimt of red on the hindwing is variable. There is generally a pale 

 distal border as in Spliinx jamaicensis. Sometimes the black bar or spot before 

 the anal angle becomes more or less red anteriorly. Size variable. Apical lobes 

 of liurpe about equal in length, obtusely rounded. Tenth sternite truncate or 

 emarginate. Tooth of duct of penis hu'ge. 



Hah. C!anada to Louisiana, westwards to California, Oregon, and British 

 Columbia. 



In tlie Tring Mu.seum some larvae and pupae, 3(1 c?c?, 16 ? ? from : N. Jersey ; 

 Iowa ; Ohio ; South Dakota ; British Columbia ; South Californi.-i. 



b. P. modesta. itnpcrator. 



Snierinthiis nccide.iitalis var. Edwards, Proc. Calif. Ar. Nat. Sci. vi. p, 92 (187C) (partim ; Ft. Yuma, 



Arizona). 

 Smerinlhux iinperatm- Strecker, Lep. Hhip. //./. p. 125. t. 14. f. :! ( $ ) (187H) (Arizona) ; Edvf., Eid. 



Amei: iii. p. 22:i (18S7). 

 Triptogun iiiqienitor, Smitli, Trans. Anifi: Eiit. Soc. xv. p. 217 (1888) (Arizona). 



Edwards's oc/'idcntalis includes tlie present subspecies. As Edwards speaks 

 in his description of " our examples " of modcsfa, we accept the Californian modenta 

 as being the true oi'cideiitalii^ and retain the name iinperator for the Arizona form. 

 The examples from Colorado which we have, mostly collected by Mr. Oslar, come 

 very near imperator, ai)proaching somewhat the palest individuals of mod. modesta ; 

 one of them, however, labelled Durango, 12. vi. '99, is darker than any individual 

 of modesta which has come under our notice, the olive median band of tlie Ibrewing 

 being very pronounced and the red colour of the hindwing not only being restricted, 

 but also much obscured. The Colorado modesta, therefore, are neither true mod. 

 7nodesta, nor true mod. imperator, but form a connecting link. 



d" ? . Large, rough-scaled. Stigma of forewing large, discal lines strongly 

 crenate ; pale abdominal and anal area of hindwing more extended than in mod. 

 modesta ; the proximal black anal bar narrow and long. Lobes of harpe unequal, 

 the upper one generally much siiorter (PI. XXXIV. f. 31); tooth of penis-sheath 

 mucli smaller than in moi/. modesta ; botli the tenth tergite and sternite narrower, 

 the latter more obviously rounded at end (PI. XXII. f. 13). 



There are two broods in Arizona, which we name : 



fi'. P. m,ode.ita imperator f t. imperator. 



cJ9. The spring-brood. Furewing greyish white at the jiroxiraal side of the 

 median baud and between the two crenate discal lines ; the band more or less 

 shaded with grey or bull', but the proximal border-line always conspicuous, i 

 darker than ?. 



Received from Dr. E. Kunze, labelled as follows: Phoenix, Arizona, 0. iv. '97 



