ATYRIA. By L. B. Prout. 
123 
A. mnemosyne Prout (17 g). Aberrant in having the antennal structure of Atyriodes. From Micropos mnemosyne. 
laeta ops, the only Cyllopodid with which it could possibly be confused, distinguished by the structure and 
the absence of the yellow dorsal stripe of the abdomen. The <$$ are locally common in N. E. and E. Peru, 
but I have never yet seen a its discovery may perhaps further upset our taxonomy. 
A. alcidamea Druce (17 g) has the same bright yellow colour as mnemosyne, but differs in the pectinate alcidamea. 
antenna, narrower borders and absence of the transverse black band; also in the partial development of a 
yellow dorsum, recalling Micropos. The but not the $, has the black border of the forewing greatly attenua¬ 
ted on the underside, the rest of its (upperside) extent being there indicated only in slight olive-grey. E. 
Ecuador: Intaj and Sarayacu, a short series. The only further examples which I have seen are a pair from 
Rio Palcazu, Huanuco. 
A. portis sp. n. Expanse 33 mm. In a measure intermediate between alcidamea and limbata, the fore- portis. 
wing narrowed as in the latter, the hindwing shaped and marked almost as in alcidamea. Abdomen slender, 
black above, white beneath, the yellow lateral stripe only indicated by a slight and interrupted line. Forewing 
with costal border encroaching slightly on to the cell, narrowing less suddenly than in alcidamea, at its narrow¬ 
est part bounded by the stalk of subcostals 2—3, distal and tornal border nowhere less than 1,5 mm, hind- 
marginal border narrowing gradually to a point near the base. Hindwing with costal border not present on 
proximal half (in the allies continuing baseward to beyond middle). The pectinations appear a trifle longer 
and less slender than in the limbata group, the hindtibia whiter, with tarsus still shorter. Carabaya: Rio In- 
ambari to Limbani (G. Ockenden), 1 A i n the Tring Museum. 
A. allogaster Prout. Appreciably less orange than in the other similar forms before me and with a allogaster. 
pale yellow dorsal line, nearly as in alcidamea. 30 mm. Apical border of forewing broadened (at 1st radial 
over 4 mm, at 3rd radial 3 mm), distal border of hindwing above less narrowed between 1st radial and 2nd 
median than in circumdata; the costal border of the forewing has a (very slightly) more angular outline in reach¬ 
ing its narrowest point. “Peru - ', 4 <$<$, evidently all collected together, but without given locality. A $ from 
Samaipata, E. Bolivia, seems to agree with them. 
A. circumdata Mssn. (17 g). Founded on a $ from the valley of the Rio Pongo (which I understand circumdata. 
is in the Yungas de La Paz), Bolivia, altitude between 2000 and 2600 m. I have not seen anything that agrees 
quite satisfactorily with it. If the type was really “citron yellow”, the colour would place it with allogaster 
and as the figure indicates a white line (dorsal, unless the abdomen was twisted) it may be that my species 
will have to sink; but it is almost inconceivable that Maassen should have described the dorsum of allogaster 
merely as “black” and the venter as yellow. The similar but slightly deeper yellow species here considered 
to be circumdata has the venter almost as white as in allogaster, the dorsum uniformly black, borders of fore¬ 
wing not very irregular in width. Chancliamayo to East Bolivia. 
A. centralis Dogn., a $ from Yilcanota, Peru, “28 mm”, differs from the preceding in the presence, centralis. 
on the 2nd discocellular of each wing, of a small black cell-dot, better marked on the under-surface. Unknown 
to me. 
A. limbata Btlr. is larger than the rest of the group (the type from Huasampilla, Peru, 9000 feet, limbata. 
measures 37 mm, not quite “1 y 2 inches” as Butler gives), costal border of forewing in places reaching the 
cell-fold, apical border relatively less broad than in its smaller allies, abdominal margin rather narrowly 
black. The abdomen beneath is decidedly less white, but is unfortunately not in good condition; in a rather 
less large Huancabamba <$ which I associate with it, it is definitely dark. It should be added that Butler's 
supposed “brush of white hairs from the side of the thorax” is really the femora-tibial hair-pencil (!). 
A. commoda sp. nov. (17 g). Intermediate between circumdata and lemonia, perhaps a race of the commoda. 
latter, which it closely resembles in the depth of its ground-colour. Black borders less broad than in lemonia, 
the costal scarcely narrowing at all at the end of the cell, the midterminal decidedly narrowed. Abdomen 
beneath cleaner white. Peruvian Amazons: Chachapoyas, type <$ and 2 others; Tambillo, 2 <$<$. Type in the 
British Museum. 
A. lemonia Druce (= obtusimacula Warr.) (17 h). Distinguished from circumdata by the much broader lemonia. 
black borders of the forewing and the different shape of the enclosed yellow- area. Abdomen beneath (as in 
alcidamea and probably circumdata) blackened in the $ only. Ecuador, the types respectively from Chiguinda 
and Loja. 
A. compensata Dogn. “30 mm. Forewing orange yellowq entirely bordered with black; this border compensata. 
costally reaches the subcostal (except that in the middle it only reaches the costal), along the inner margin 
follow-s vein 1, remaining nearly of the same wddth to beyond veins 2 and 3, then extends gradually and becomes 
very broad in the apical region. The hindwing has an abdominal border which commences as a simple edging 
