( 449 ) 



red as the aj)ical costal patch of the forewiiig (summer brood 'i Onr other dated 

 individnals of xenta were caught iii May). 



llab. Rocky Moiintaius, from New Mexico to Montana. 



In the Tring Museum 64 specimens from : New Mexico ; (.'olorado (Oslar) ; 

 Clear Creek, Berkeley (v.), Platte Canon (7500 ft.), Colorado Springs, Ft. Collins ; 

 Montana. 



c. H. diljiids theti^. 

 * Macroglnxxd thefix Boisduval, Bull. Sar. Eiit. Frame p. 32 (1855) (Calif. ; — coll. Charles Oberthiif). 



c??. Legs totally black, or hindtibia with j)ale hairs near baso; tail entirely 

 black. 



Two principal forms, which are not seasonal : — 



f/'. H. (liffinis thetig f. thetis. 



*Man-i)ijlosHi thelU Boisduval, /..-. ; Grote & Rob., Prw. Ent. Sor. Ph/lml. v. p. i;i2 (18G5) ; Boisd. 

 Ann. Sue. Ent. Belg. xii. p. (35 (186tl) ; Grote & Rob., Tnuix. Amer. Enl. Sue. iii. j) 17'J (18711); 

 Boisd., .S>cr. Gen. Lep. HiH. i. p. 368. d. 57 (1K75). 



Scsia thetis, Grote & Rob., Tmna. Amer. Ent. Sue. i. p. 325. t. G. f. 3G (18U8). 



HcmarU thelix, Grote, Ball. Buffalo Soe. .V. Se. i. p. 5. 18. t. 1 f. 7 (1871) ; Edw., Proc. Calif. Ar. S,-. 

 vi. p. 87 (187(;) (coast range, v. vi.) ; id., /../. ii. p. 224. n. 1 (1875) ; id., I.e. iii. p." 220. n. 1 

 (1877) (Calif.) ; Butl., I.e. ix. p. 51U. n. G (1877) ; Grote, OimicI. Ent. xviii.p. 130. n. 2 (188(;) ; 

 Smith, I.e. xv. p. 'JU (188K) (Calif.) ; Kirby, Cut. Lep. Ilet. i. p. 027. n. 25 (18'.I2). 



Hemaris palpalis Grote, Bull. Beffahi Sue. N. Sr. ii. p. 145. 224. n. 2 (1875) (Gilroy) ; Edw., Prue, 

 Calif. Ae. Se. vi. p. 8',) (187G) (Gilroy, California, not Gilroy, Brit. Columbia) ; Grote, I.e. iii. 

 p. 220. n. 2 (1877) (California) : Butl., '/'/■»/«. Zuol. Sue. Lund. ix. p. 51',). n. 3 (1877) ; Grote, 

 Canad. Ent. xviii. p. 130 n. 1 (188G} ; Smith, Trans. Aincr. Enl. Sue. xv. p. 89 (1888) ; Kirby, 

 Cat. Lep. Ilet. i. p. G26. n. 23 (1892). 



Hemaris ruliens Edwards, Prue. Calif. Ae. Se. vi. p. 88 (187G) (Oregon ; Lake Tahoe) ; Grote, Bull 

 Bnfalu Sue. N. Se. iii. p. 220. n. 3 (1877) ; id., Canad. Enl. xviii. p. 1,30. n. 4 (188G) ; Smith, 

 I.e. XV. p. 92. t. 4. f. 2 (genit.) (1888) (Oregon ; Calif.) ; Kirby, Cut. Lep. Ilet. i. p. G27. n. 27 

 (1892) ; Beutenm., Bull. Amer. ilu's. N. H. iv. p. 170 (1892) (Oregon, ex coU. Hy. Edwards). 



cJ?. Hindtibia with a tuft of ]iale hairs near base, or nearly entirely pale- 

 haired : besides abdominal tergites and 7, generally also middle of tergite o pale ; 

 some specimens have the fifth tergite, however, black like the fourth. Size 

 variable : our summer specimens from Arizona ai'c as large as diffinis f. Ae&t.c/ifflt/is, 

 and have tlie wing borders far more red than ordinary l/tctis. Possibly the summer 

 brood, at least of the southern districts of the range of thetis, are mostly large and 

 reddish on the wing ; il'that is the case, the form should be kept separate as f. aesf. 

 rubens. 



We doulit that the yellow colour of the paljii of the indivi<lual called palpali.'< 

 was natural ; the sjicTimen, if preserved, should be carefully examined ; possibly 

 the yellow colour is due to the presence of pollen. 



c. II. tlijjhiis tlictis f cijiiotjlo.'isiim. 



ilemuriii eijmnjlmsuin Edwards, Prue. Calif. Ae. Se. vi. j). HK (1H7(>) (Calif. ; Vancouver 1.) ; Grote, 

 Bull. Buffalu Sue. N. Se. iii. p. 220. n. 4 (1877) ; Butl., Pai>llio i. p. 103 (18K1) : Grote, Canad. 

 Ent. xviii. p. 130. n. 3 (I88G) ; Smith, I.e. xv. p. 91 (1888) (Calif. ; Vancouver) ; Kirby, Cat. 

 Lep. Ilet. i, p. (;27. n. 30 (1892) ; Beutenm., Bull. Amer. ilus. N. U iv, p. 170 (1892; (3 specim, 

 ex coll. Hy. Edwardtt). 



f? ? . Hindtibia ipiite black ; fifth abdominal t(!rgite black like fourth, selddui 

 at each side ni niiiidle of the colour of the sixlh and seventh. No structural 

 diil'ereuuu I'l'om f, llnits. 



