( 398 ,) 



111 the Triiig Blnseum 1 (?, 2 ? ? from : Amazoii (Bates, tijpe (A smerinthoides) ; 

 Petropolis. 



Agrees in the (Uitliiic of the outer margin of tlie forewing with carinata. 



3'J'.t. Aleuron iphis (PI. LXVl. f. 7, S). 



*lu,ijo qihh Walker, Lisl Lii>. Inx. IS. M. viii. p. Il«. n. 8 (1856) (Brazil; Mus. Brit.) ; Bull., 



Trillin. Zool. Soc. Loud. ix. p. 542. n. 2 (1877) (pattini) ; Druce, in Binl. Ceiili: Amei:, Lrp. 



Ilil. i. p. 7. n. 2 (1881) (partim) ; Kirby, Cat. Lrp. Ilet. i. p. C45. n. 3 (1892) (partim) ; 



Druce, ( ,■. Sniipl. p. .30:5 (180G) (p.irtim). 

 Ciillioiiiiiiu nildtira Clemens, /«HrH. Acail. N. Sci Philail. iv. p. 142 (185!l) (Brazil); Kirby, ^.c. 



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

 *Tijhiijniiihii!< sri-ijiltir Felder, /I'cwe yurnni, Leji. t. 82. f. 4 (1874) (Amazons ; — Mus. Tring). 

 Tiihigimthiis ijihis, Mijschler, Verh. Ziiul. But. Gis. ]\'ini xxvi. p. 349 (1887) (partim). 

 Unzela ijihis, Biinninghausen, Iris xii. p. 134. D. 75 (1899) (Rio de Janeiro). 



This and the following species resemble one another so closely that it is no 

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

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

 individual variability of ipkis. A long series of specimens of the two species, 

 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 apparently everywhere within their whole range, and further as the 

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

 insects are not individual, seasonal, or geographical varieties, but must be 

 sjiecifically distinct. 



cJ?. Forewing crossed in middle by four black lines, the most proximal 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. AVhite belt at base of abdomen conspicuous, the following 

 tergite brownish. Palpus slightly angulated laterally. 



c?. Tenth segment essentially as in c/doroptem ; 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, pointed, 

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

 short pointed process ; both claspers with a large patch of dark bristles on the inner 

 surface. Penis-sheath (PI. LIII. 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. 



Ilab. Mexico to Southern Brazil. 



In the Tring Museum 13 S6, 6 ? ¥ from: Rio Cachyaco, Prov. Iquitos 

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

 350U ft., ix. (Stuart) ; Maripa, ('aura R., Venezuela, xii. I'JOI (Klages) ; Brit. 

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



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



Alr.uriiii iphis, Boisduval (noii Walker, 1851;), Spei: Gen. Lep. Ilii. i. p. 295. n. 3 (1875) (Cayenne) ; 

 But]., Trails. Ziml. Snr. Loud. ix. p. 542. n. 2 (1877) (partim) ; Druce, in liiol. Cenlr. Amer., 

 Lep. lltt. i. p. 7. n. 2 (18H1) (paitim) ; Kirl.y, Cat. Lep. Ilet. i. p. 045. n. 3 (1892) (partim) ; 

 Druce, I.e. Siippl. p. 303 (1891)) (partim). 



Tylognathus iphis, Mbschler, Verh. Zuol. Bot. Ges. Wicn xxvi. p. 349 (1887) (partim). 



