( 561 ) 



(? ¥ . A large form, nearl}' as bright yellow as P. thoas cimjras ; the femule 



very little paler than tlie male. Upperside : fore wing somewhat falcate ; cell-spot 



absent or small ; snbapical spot large in nearly all specimens, usually produced into 

 a point ; patch ^C' — R' di^cply sinuate, sometimes completely divided ; submarginal 



spots always present, usually four. Hindwing : red anal spot present ; distal 



edge of yellow band crossing cell at base of M- or proximally of it ; upper sub- 

 marginal spots usually more or less rotnndate. 



Underside : snbapical spot of forewing large, the third and fourth snbmarginal 

 spots somewhat transverse, often also the second ; black marginal band of both 

 wings broad in the majority of specimens. 



Genitalia essentially as in P. thoas mitodes ; S, lateral ridge of tenth tergite 

 not toothlike, not subsinuate ; harpe somewhat curved, ventrally denticulate before 



apex. ¥ , edge of vaginal orifice proximally raised into a tubercle or an obtuse 



process. 



Hab. Bahia southwards, extending westwards to South-East Bolivia, inter- 

 grading completely with the next form, and in S.B. Bolivia with the preceding 

 subs])ecies, there being neither sharply defined morphological nor geographical 

 limits. Type of name from Petropolis. 



It is probable that P. thoas is in these districts a wanderer like the Nearctic 

 /'. cresphontes, which would explain the absence of a strict line of separation 

 between the Brazilian and Argentinian forms. 



The large Brazilian specimens are usually regarded as being the same as the 

 form from Surinam, which is the nomenclatorially typical subspecies of P. thoas. 



In the Tring Museum 50(Jcf, 26 ?¥ and a larva from: Minas Geraes, 

 February 1897 and 1901 (A. Kennedy) ; Petropolis, December and January 

 (J. Foetterle) ; S. Paulo; Castro, Parana (E. D. Jones) ; Yhu, Paraguay, September 

 — December 1890 (Andeer) ; Sapucay, Paraguay (W. Foster); Patino Cud, Paraguay, 

 February (Montforts), Tucuman (J. Steiubach); Salta (J. Steinbach); S. Jose' de 

 Chiqnitos, E. Bolivia, July 22. 1904 (J. Steiubach). 



h. P. thoas thoantiades Burm. (1878). 



Piipilio thoantiaik's Burmeister, Dcm:): Rej>. Argent, v. Leji. p. 59. n. 6 (1878) (var. of Uinas) ; id., l.r. 

 Atlnx t. 2. fig. 3. larva, 3a. pupa, t. 4. fig. 9. ? (1879) ; Oberth., Et. d'Ent. W. p. 70. n. 210 

 (1880) {partim ; Bueno.s Aires) ; Gosse, Entum. xiii. p. 194 (1880) (Corrientes). 



Pajiilio thoaiitUks (!), Staudinger, Exot. Tag/, p. IC (1884) (Argentina). 



c? ? . Smaller than the preceding; discal band of fore- and hindwing very 

 variiible in width, usually paler than in J\ thoas brasiliensis ; di.scal and marginal 

 black bands on underside of hindwing broad. 



Genitalia : t?, harpe more curved than in brasiliensis. 



Hab. Province of Buenos Aires and northward. 



In the Tring Museum: 30 S6, 20 ? ? and some larvae and pupae from: 

 Buenos Aires, January, February and March (Ruscheweyh) ; Cordoba, Paysaudu, 

 and Rosario, March (Ruscheweyh) ; La Soledad, Entre Rios, February 1899 

 (Chas. Britton). 



67. Papilio homothoas s])cc. nuv. (PI. V., fig. 13). 



Ptipilln crrsphonles, Felder (non Cramer, 1777, err. det.), \'erh. Ziiol. But. Ges. Wien xiv. p. 310. 

 n. 294 (18G4) {parti m ; Bogota). 



Resembling P. thoas ; forewing shorter ; bases of distal segments of antenna 

 of male broadly yellow beneath ; tail shorter and more strongly spatulate, being 



