OF Tin: AMAZON VALLKY. 561 



The area of distriliution of //. Vcsla embraces tlic lesser areas of 77. .Ifclpoinrnc and 

 //. Thdxiojx'. As iutcnuediate forms connect it uitli //. J/dpf/nictic, llicrc can be no 

 doubt that it is descended from the same stock as tliat species; l)ut havinu' diveru'ed 

 more widely, it is not readily seen to be a modilication of it, like //. T/w/j-io/x'. It may 

 be the oldest-created of this cluster of imperfectly seg-reyated species. 



10. IIelicoxius BiRXKYi, lliiluier. 

 Mir/o)iitis Burneyi, Iliibn. Ziitr;ii;:e, f. -101, 102. 



This fine, laruc, vol)ust sp(>cies belong's to the same n'rouj) as //. Jlclpomri/e, Sec. It 

 seems to be coniined, like //. TlicLriojx-, to the for(>st plains of the Amazons ; it is not, 

 however, a common insect, but is restricted to certain localities. Its stront,', bold ilight 

 distinijuishes it from all ot lu-r species of Ilellcoitlii-s, when on the winL,^ M any individuals 

 of ])oth sexes have the hind winijjs black, cxce[)t a patch of red at the base. 



17. llKLicoNiis Egkkia, Cramer. 

 FfipUio Kf/cria, Cram. Pap. E\ot. t. .51. 1'. 1?, C. 



This resembles much //. Jiiii'iiciji in size and gcMieral apjicarance ; it seems, however, 

 to be a perfectly distinct species, recoL;nizablc by the glossy light-l)rown hue with jjaler 

 streaks l)etween the nervures, of the under surface of the wings. The hind wing l)eneath 

 has a red streak near the abdominal edge, and there is a yellow spot on the costa at the 

 base. It is a rar(^ species : I took it at I'ara : it is found also at Cayenne, where //. Buriiciii 

 ai)pears not to occur. ^ly specimens dilfer from the one figured by Cramer, in the design 

 of the upper surface of the hind wing-, the red colour of the basal half being continued in 

 a series of eij^ht short, wedge-shaped streaks into the broad, l)lack marginal half of th(> 

 wing. 



IS. IIkmconhs A(i;i)i;, lliibner. 



Mv/onilis Awdf, Iliihii. Ziitriigc, f. 12!), 1.50. 



Hc/irortiii AstijiUauiu, Krichsoii in Sc-Iioiiiburgk's Rcisc in Brit, finian. p. .OOrj (aberration). 



The antennae in this species are much shortei' than in the Ifclicoi/ii generally, and 

 more thickly clavate. It a])|)ears to be coullned to the Amazon region and (luiana. In 

 (iuiana (Denu'rara and Cayenne) a sjjecies is found* which closely resem])les it in shape 

 and colours, but dilTers in having slender antenna', like the typical IL'liroiiii. 



* HkI.KONIIS \ ANTIIOC r.KS, U.S. 



c? . .'5" 2'". Fore iriiu/ : uhort', black ; the basal third clear oranjro-rcd ; a large (iiiadratc spot witbiii the cell at 

 the end, and a bill of seven larj^e spots close after the end of the cell, clear yellow ; near the apex is a small oblont; 

 yellow spot, crossed Ijy three nervures. Itencolh, the same. 



Hind win;/ very broad, nearly circnlar : ahorr, black, with tuo short red streaks at the base, liiumlh, the same, 

 except that there is a small yellow spot at the l)ase of the costa, and four small red s])ots between the nervnres at tbeir 

 origin. Body black; head with a few white marks; mesothorax with four small spots in front, in a transverse litw, 

 and two large ones in the middle, yellow. Scutellnm and two spots on the metathorax also yellow. The abdonuMi 

 has a series of narrow yellow bands, the tip of each segment being edged with yellow. Antennic long and slender, 

 black. 



Dcinerara ; Cayeinie. 



I I- 2 



