92 U.S. NATIONAL MUSEUM BULLETIN 244 



margin abruptly narrowing, producing prominent notch Ji distance 

 from base. Aedeagus slender, without expanded base. Eighth 

 sternite with posterior margin sharply truncate ; furcations convergent 

 or parallel, slender, acutely pointed, variable in length. 

 Female. — Unknown. 



Key to the Species of Thanatopsyche 



la. Vesture of thorax greyish white 35. T. canescens 



lb. Vestui-e of thorax black 34. T. chilensis 



34. Thanatopsyche clUlensis (Philippi) 



Figures 33, 224, 277, 277a; Map 8 



Psyche chilensis PhiHppi, Linn. Ent., vol. 14, p. 290, I860.— Walker, List Lep. 



Insects Brit. Mus., vol. 32, suppl. 2, p. 405, 1865.— Butler, Traas. Ent. 



Soc. London, p. 9, 1882. — Dalla Torre and Strand, Lep. Cat., pars 34, p. 114, 



1929. 

 Thanatopsyche chilensis (Philippi) Kirby, Cat. Lep. Heter., vol. 1, p. 524, 1892. — 



Dalla Torre and Strand, Lep. Cat., pars 34, p. 184, 1929. — Gaede in Seitz, 



Macrolep. World, vol. 6, p. 1181, pi. 169c, 1936. 



Male. — (Fig. 33.) Vesture of body unicolorous, black, denser 

 than that of T. canescens. Antennae black, usually 40-44 segments. 

 Base of M within discal cell frequently divided. Wing expanse 29- 

 36 mm. 



Male genitalia. — (Fig. 277.) Very similar to that of T. canescens 

 but larger. Eighth sternite (fig. 224) equal to that of T. canescens in 

 length but with broader base; f ureal arms shorter and convergent. 



Case. — Philippi in the original description states that the mature 

 bag is approximately 63 mm. long, 16-18 mm. in diameter, and is 

 spindle-shaped. The case may sometunes be nearly bare with only 

 traces of small pieces of bark; it is brownish grey with the consistency 

 of parchment. 



Type. — Lost. 



Type locality. — Chile. 



Recorded hosts. — "Die Raupen scheint die zarte Rinde der 

 Zweige zu fressen, und lebt auf sehr verschiedenen Gewachsen, na- 

 mentlich Pflaumen — und andern Obstbaumen, Rosen, selbst auf 

 Lebensbaum, aber auch auf wildwachsenden Baumen und Strauchern" 

 (Philippi, 1860). 



Distribution. — (Map 8.) Recorded from the Vale of Chile and 

 the Coastal Range of central ChUe. 



Material EXAMINED. — 11 cfcT. 



CHILE: Specificlocality unknown, cf, CAS; cT, ZMHU;2cf c?, ZSBS. Bafios 

 Cauqueas, d^, Nov., CAS. Santiago, 2 d^ d^, BM; c?, July; d", CAS; d', Feb. 22, 

 USNM. Valparaiso, c?, CAS. 



