( 409 ) 



? . Vaginal plate small, triaugnlar, with the edges somewhat incrassate ; 

 orifice basal, mesial ; no special armature. 



Early stages not known. 



Hab. Central and South America. 



Five species. 



This genns is not nearly related to Peri(/onia and Ni/cery.r, witli whicli it has 

 generally been confounded. The peculiar tufted scaling of the hindleg is the most 

 salient feature by which Pachi/gonia can at once be recognised. 



Key to the species : 



a. Hiudwing with reddish or clayish bands . . b. 

 Hindwing with a trace of reddish lines only at 



anal angle ...... 



b. Forewing sinuate at apex or truncate 

 Forewing pointed at apex .... 



c. Forewing above with an obvious clayish sub- 



marginal patch Ijelow apex, bands of hind- 

 wing obscure, at least in front . 



Forewing above without obvious clayish sub- 

 marginal patch, bands of hindwing clearer 

 red, a third (median) band vestigial . 

 (I. Bands of hindwing obscure .... 



Bauds of hindwing clearly marked pinkish red 



338. Pachygonia subhamata. 



*Perif/otiia mhhamdta Walker, Lht hep. Ins. B. M. viii. p. 102. n. 4 (1856) (partim, ^ not ? ; 

 Para ; Venezuela ;— Mus. Brit.) ; Clem., Proc. Ac. Nat. Sc. Phihid. iv. p. 138. n. IG (1859) 

 (partim); Morris, Cut. Lep. N. Am. p. 17 (I860) (partim); Clem., in Morris, Syn. Lep. N. Am. 

 p. 160. n. 2 (1862) (partim) ; Butl., Trmiit. Zunl. Snc. Lnml. ix. p. f.SS. n. 1 (1877) ; Druce, 

 hio!. Centr. Auier., Lep. Net. i. p. 4. n. 1 (1881) (partim; Chiriqui) ; Kirby, Cat. Lip. Net. i. 

 p. 637. n. 1 (1892) (partim ; Mexico to Venezuela). 



.Ufiernt/lonttn fjiganten Schaufuss, Nuitq. Otios. i. p. 20 (1870) (Venezuela). 



Per'ajonia valifiiuosa, Boisduval, Cons. Up. (juiitemitla p. 66 (1870) (partim) ; id., ^pee. Gen. Lep. 

 Hit. i. p. 324. n. 7 (1875) (partim). 



Periejdnw nimerud Boisduval, Cons. Lep. (iuotemnla p. 66 (1870) {num. max. siiperrnc). 



Perii/iiiiiii ninmid id., Spec. Gen. Lep. Het. i. p. 324. n, 7 (1875). 



Peri(/on/a grand/s id., l.c. (mini. max. superi'aeuum). 



Piiehijlia mjitramatii (!), Bunningbausen, Iris xii. p. 119. n. .30 (1899) fKio de Jan.). 



c? ? . Apex of forewing sinuate between SC and SC^ ; distal margin concave 

 lietweeu SC' and R", convex at R^ but not angulate ; the clayish grey submarginal 

 |i!itch R' — H- distinct, the sjiecies diftering in this respect from hopfferi, in whicli 

 the jiafch is indistinct ; bands of hindwing huffish pink, more or less shailed with 

 brown, the pink tint mostly not jiromineut, most obvious in specimens from 

 EH|)irito Santo. Hiudfarsus in this and the three following sjiecies with a ventral 

 crest only on tlie first segment, and a dorsal crest on segments 1 to 3. 



i. Tenth tergite gradually narrowed, ayjex abruptly hooked (PI. XLIV. 

 f. 15. IT) : stemite narrowed towards end, slightly spatulate. Clasper nearly as 

 ill hopjferi ; har))e also almost the same, but the process smaller, more spatulate. 

 Process of ])CMiH-sheath (PI. LIII. f. 21)) curved, the right edge minutely serrate. 



I lab. ('ciilral and Soutii America. 



Ill tlie Triiig Museum 5 SS, 3 ¥? from: Mexico; San Pedro Snla, 



