( I-'O ) 



?. Unknown. 



Larva and ciirysalis unknown. 



Ildlj. La Paz, Bolivia, 1 c? at tlie electric light (Mus. Tring). 



Not seen in other collections. 



'.Ml. Hyloicus maura (PI. XI. f. 5, ?). 



Sphinx maiirii Burmeister, Descr. Reji. Aiycut. V. Atlas p. 57 (1879) (Tucuman ; — Mus. Buenos 

 Ayres) ; Kirby, Cat. Lep. Het. i. p. 691. n. 11 (1892) (Tucuman). 



? . We have only 2 ? ? , and there was no other material in the collections 

 visited. This may be the other sex of arthuri ; hnt considering the great similarity 

 in pattern between separatus and eremitoides, lugens and geminus, it would be very 

 hasty to j)ut arthuri and maura together as the sexes of one species. The question 

 can only be decided by the study of cJc? of maura from Tucuman. The two insects 

 agree in the peculiar shape of the forewing, the outer margin of the same being 

 slightly convex, nearly straight down to W'. The head and thorax are uniform in 

 colour, without black stripes in both species ; however, whereas these parts as well 

 as the forewing are blackish grey in maura, they are greenish olive-lniff in ai-thuri. 

 The underside of the abdomen of maura is less wliite than in arthuri, and the 

 white fringe of the hindwing is distinctly spotted with brown. Both species have 

 two golden-yellow spots on the metanotum, one at each side. 



Vaginal plate similar to that of separatus, distally more rounded, the cavity 

 also more rounded, the cone bearing the vaginal orifice rather high, oblirpiely 

 truncate, the ventral margin projecting. 



Early stages unknown. 



Hab. Tucuman and Espirito Santo. In Mus. Tring 2 ? ? from : Tucuman, 

 cotype ; Espirito Santo (from Herr Fruhstorfer). 



The specimen labelled Espirito Santo has a doulile stigma on the forewing, 

 while the anterior spot is wanting in the cotype, which we received from Professor 

 Carlos Berg. 



91. Hyloicus aurigutta spec. nov. (PI. XL f. 4, S). 



S ? . Similar to lugens, larger, less grey, wings and Iwdy (abdomen excej)ted) 

 washed with Vandyke brown. Metathorax with two golden yellow spots. Wings, 

 u ppersiilc.——Fomyfmg : black markings not very distinct on the dark ground ; an 

 indistinct russet patch behind cell proximally of obli({ue antemediau double line ; 

 white double stigma rather prominent ; oblique apical line thin, widely interrupted 

 at SC" ; postdiscal line 11- — SM- interrupted at veins, nearly straight, followed by 

 a greyish white, irregular, submarginal line, which is, taken as a wliole, parallel to 



margin. Bands of hindwing less white than in lugens, being washed with brown 



like the abdominal bands ; black basal patch not quite reaching base, antemediau 

 grey band curved as in merops, black discal band much widened from (SM') to R^ 

 including a grey patch before M'- and a smaller one at SM'-. Palpns and sterna 

 with a few grey scales. 



S. Tenth abdominal tergite broad in proximal half, vc;ry abruptly narrowed in 

 middle, apex slenderer than in lugens, sternite longer and slenderer than in that 

 species. Harpe (PI. XXXVIII. f. 3) ending in a heavy tooth, dorsal edge heavily 

 toothed, ventro-distal edge faintly notched. Process of penis-sheath of the same 

 type as in lugens, but broader. 



