( 726 ) 



Bolivia, Jnly 1004 (J. Steinbach) ; Sapncay, Paraguay, September 1902 (W. Foster) ; 

 Yhii, East Paragnay, December 1890 (Andeer) ; Villa Maria to Piamaiitino, 

 ]\Iatto Grosso, Jannary 1897 (Andeer) ; Minas Geracis, February 1899 and 19ul 

 (A. Kennedy) ; Petropolis ; Rio de Janeiro (E. May) ; Bahuru, S. Panlo (Dr. 

 Heiup.'l) ; S. Catliariiia ; Bhimeuau. 



XVI. Tliyastes Group. 



This gronp is very closely related to the following one, the two together con- 

 trasting rather strongly with the previons gronp in pattern as well as structure. 

 The genitalia of the Thi/astes and Dolicaon Groups are practically the same, the 

 differences between the species being very slight in these organs. The females 

 are even rarer in collections than those of the I'rotesilaus Group. 



Six species : 



a. Hindwing below with a tawny band on disc . . . Species No. 157. 

 Hindwing lielow with a line of red spots on disc . . b. 



b. Forewiug with row of sharply marked subraarginal spots 



in apical area ........ c. ' 



Forewing without sharply marked snbmarginal spots in 



apical area . , Species No. 162. 



c. Hindwing, on npperside, with a yellnw spot i\l' — M- 



beside the marginal anal spot Species No. 158. 



Only the marginal spot present d. 



d. Pale discal area of forewing not reaching to lower angle 



of cell Species No. 159. 



Pale discal area of forewing reaching to lower angle 



of cell e. 



e. Snbmarginal spot R'^— R^ of forewing distant from discal 



area, or absent Species No. 100. 



Snbmarginal spot R- — R^ of forewing contiguous with 



spot R^ — R' of discal area, always pre.-;ent . . . Species No. 161. 



157. Papilio marchandi Boisd. (1830). 



Paj>ilio mavchiinili Boisduval, Spec. Gen. Up. i. p. 350. u. 192 (1836) (Mexico) ; Strecker, Lep. 

 Rhop. Uet. p. -25. t. 4. fig. 2 (1873) (Panama ; Costa Rica ; Hondura-) ; Godni. * Salv., Biol 

 Centi: Amrr., lilinp. ii. p. 218. n. 4i;. t. G8. fij. 5. liaipe (IH'.lO) (Ea«t and Soutli Mexico; 

 Guatemala; Brit. Honduras; Costa Rica; Panama; Colombia); Haase, Uiitn-siich. Mimicry 

 i. p. 83 (1893) (Colombia ; Guatemala). 



S ?. Instead of the discal row of red spots on the underside of the hindwing 

 of the allied species P. marchandi bears a tawny band, the wing being more or 

 less washed with the same colour dislally of the black subbasal band and along 

 the abdominal fold. The tail is broadly bordered with yellow from base to tij) on 

 hindside. Individual variability obtains on the forewing especially in the size of 

 the yellow snbmarginal spots and in the upper discal spots, of which spot R'— R- 

 is usually absent or vestigial, and on the hindwing in the size of the black bands 

 of the underside. Some of the specimens from Ecuador and Colombia e.vhibit an 

 interesting character on the upjierside of the hindwing. The ujiper three yellow 

 bars belong to the admarginal series, the fourth spot, which stands on a level 



