( 300 ) 



Spot in apex of cell and dot ontside D' 



more or less completely merged together V.'85. /. swaiitmni. 



d. Underside of abdomen wliite, with coii- 



spicnons black dots .... :.".)(i. I. excrlsior. 



Underside of abdomen grey sluuled with 



brown ........ e. 



e. Forewiug above almost entirely bhickish 



brown ; border of hindwing reaching 



halfway to cell ..... 288. /. congratulitnt. 



Forewing above brown, with litfle grey 



scaling and a russet jiatch on disc ; 



border of hindwing not reaching halfway 



to cell 28(5. /. sojron. 



Forewing grey or white, at least in apical 



third /. 



J. Thorax and forewing ashy grey . . . 287. /. menechus. 

 Thorax and forewing cljalky grey . . 289. 1. rimo.'iae. 



284. Isognathus leachi. 



fiphirur hiirhi Swaiii^on, ZnoL IUns.tr. iii. t. l.OO. f. 1 (182:i) (Brazil). 



Awenjx Kci/mn, Walker {non Cramer, 1780), List Leji. Ins. B. .1/. viii. p. -lib. n. 5 (18,j6) (partim ; 



Villa Xova). 

 hnijaathiis leiu-hi, Felder, Wien. Ed. Mon. vi. p. 18-! (18G2): B itl , Tr.ni^. Zoo!. Soc. Lmd. ix. 



p. 602. n. G (1877) : Kirby, Cat. Lep. Let. i. p. 698. n. 12 (1892) (Brazil). 

 .liinryx leachi, Boisduval, Sjiec, Gen. Lep. Hef. i. p. 125. n. 8 (1875) (pardni V). 

 *.\iii-eryx cahiichu id., /.'■. p. 122. n. 4 (1875) (coll. Charles Oberthiir). 

 *Is(i(jn(ithns niftascyron Butler, Prof. Zool. Soc. Lond. p. 258. n. 51 (1875) (Villa Nova ;— Miis. Brit ); 



"id., Tmm. Zool. Soc. Lond. ix. p. 602. n. 7. t. 94. f. 7 ^ ? ) (1877). 

 Pseiidosjihiiuc scyron, Burmeister {iion Cramer, 1781)), Ihscr. Kep. .\rqenl. v. p. 327. n. 2 (187H) 



(partim). 

 hngnathiLf cahuchu, Butler, !.c. p. 629 (1877) ; Kirby, I.e. n. 6 (1892). 

 (?) iKognalhiis pedihmthi, Bijnninghausen, Iris .\ii. p. 117. n. 23 (1899). 



c??. Bands of abdomen not distinct. 



Wings, upperside. Forewing : basal mesial elongate patch about 2i mm. 



broad ; cross-vein D' pale, separating distinctly a ronnded spot from the patch 

 situated in the cell ; black discal streak R^ — M' heavy, more or less connected 

 with the curved patch behind M^; greyish white scaling sparse, no distinct grey 



interrupted vein-streaks posteriorly on disc. Hindwing : marginal baud distinctly 



and almost regularly dentate, not constant in width. 



Amount of yellow on underside variable. 



Larva not known with certainty. Bonninghausen says of the larva of what he 

 calls pedilanthi, that it is marked with brown, black, and grey, and has no rings ; 

 his pedilaidhi may be this or the following species. 



Ilab. South America : Surinam to Southern Brazil. 



in the Tring Museum A <S (S,'i ? ? from : Leopoldina ; Jliuas (ieraes, 12. xii., 

 10. ii. (Kennedy) ; Kio Negro (Pratt) ; C!ayenne. 



In the Paris Museum from the frontier of Uruguay. 



285. Isognathus swainsoni. 



Anceryx ncyron, Walker (non Cramer, 17H0), I.e. viii. p. 225. n. 5 (1856) (partim ; Brazil). 

 Imgnathm givain:i(jni Felder, H'/Vh. Ent. .Vim. vi. p. 187. u. 175 (1862) (Rio Negro) ; Bull., 

 Trans. Zonl. Soc. Land. ix. p. 602. n. 9 (1877) : Kirby, Cat. Lip. [Jet. i. p. 698. n. 10 (1892), 



