( 398 ) 



111 till' Triii;;' Mnsciini 1 c?, L' ? ? fmiii : Amiizoii {Butei^, f^jic oi' smcri/itZ/o/f/rs) ; 

 ]'eti'(i|i()lis. 



Agrees in tli itliui' of tlie outer margin ol' tlic i'orowing with cftrunifn. 



•,V^\K Aleuron iphis (I'l. LXVI. f. 7, S). 



*l'.iiiio i/ilii.i Wiilker, Linl I.r/i. Jus. H. M. viii. p. llli. n. « (1850) (Brazil : Mus. Uiit.) ; Hut)., 



Tmiis. Xoul. Sue. Loud. ix. \t. UA'l. n. 2 (1877) (paitim) ; Druce, in Bint. Cenlr. Aiufr., Leji. 



lilt. i. p. 7. n. 2 (18H1) (partim) ; Kirby, Cat. Up. IIcl. i. p. 645. n. 3 (18'J2) (partim) ; 



Druce, It: Siij,jil. p. ;(0:i (\HW,) (partim). 

 Cdlliomma vulatica Clemens, Janni. Ai-ail. iV. Sri. Ph'tlad. iv. p. 142 (18.')9) (Brazil) ; Kirby, I.e. 



p. (547. n. 8(1892). 

 *TyliHjn<(ihus .wriplor Felder, Rdxe Xunira, Lep. t. 82. f. 4 (1874) (Amazons ;— JIus. Tring). 

 T//lo</nathns i/ihis, Miischler, Verh. Zoi>l. liol. Gcs. Wicn xxvi. p. 349 (1887) (partim). 

 Unxfhi iphh, Bimiiinghausen, Irh xii. p. 134. n. 75 (1899) (Rio de Janeiro). 



Tills iiiul tlie following sjiecics rcsciiililo one another so elosely that it is no 

 wonder they are generally treated as being the same. Some of the distingnisliing 

 characters have been noticed, but these diiferences were considered to be due to 

 individual variability of ipliis- A long series of specimens of the two sjiecies, 

 neither of which is rare in collections, has proved to us that the distinguishing 

 characters are constant and that there are no intergradations. As the two insects 

 occur together ajiparently everywhere within their whole range, and further as the 

 differences in colour are accompanied by differences in the genital armature, the 

 insects are not individual, seasonal, or geogi'aj)hical varieties, but must be 

 sjiecifically distinct. 



c??. Forewing crossed in middle by four l)lack lines, the most pro.ximal one 

 bordered with white proximally and distally. Underside of forewing with walnut 

 brown discal patch which is contiguous with the cell between R' and M' and 

 extends basad posteriorly. White belt at base of abdomen conspicuous, the following 

 tergite brownish. Palpus slightly angulated laterally. 



c?. Tenth segment essentially as in chloroptera ; tergite slightly narrowed to 

 end, which is truncate, with the angles rounded. Clasper large, right one larger than 

 the left one ; right harpe reaching beyond tip of clasper, curved upwards, jjointed, 

 round, like an elephant's tusk ; left harpe (PI. XLVI. f 10) short, ending in a 

 short pointed process ; both claspers with a large ])atch of dark bristles on the inner 

 surface. Penis-sheath (PI. LIU. f. 24) with a short process which is densely 

 denticulated. 



? . Vaginal oritice in a large cavity, of which the anterior and lateral walls are 

 formed by a high and thin ridge. 



Early stages not known. 



Hub. Mexico to Southern Brazil. 



In the Tring Museum \'-\ i S , 6 ?? from: Rio Cachyaco, Prov. Iquitos 

 (Stuart) ; Perene R., Peru, iii. (Simons) ; San Augustin, Mapiri R., Bolivia, 

 ;iyO(l ft., ix. (Stuart) ; Marijja, ("aura R., Venezuela, xii. 19U1 (Klages) ; Brit. 

 Guiana ; Amazons ; Espirito Santo ; Rio de Janeiro ; Sao Paulo. 



330. Aleuron neglectum spec. nov. (PI. LXVI. f 11, c? 



Alcimm iphis, Boisduval {nou Walker, 1856), Sper. Gm. Lep. Hct. i. p. 295. n. 3 (1875) (Cayenne) ; 

 Butl., Trans. Zaol. Sor. Load. ix. p. 542. n. 2 (1877) (partim) ; Druce, in Biol. Centr. Amer., 

 L(p. Jlet. i. p. 7. n. 2 (1881) (partim) ; Kirly, Cat. Lep. Het. i. p. 645. n. 3 (1892) (partim) ; 

 Druce, /.c. Siqqil. p. 303 (189i;) (partim). 



Tylui/mUhus iphis, Mosohler, Verh. Zool. Bot. Gcs. Wie7i xxvi. p. 349 (1887) (partim). 



