128 
TRICHOSTERRHA; XYSTROTA. By L. B. Protit. 
inaequalis. M. inaequalis Walk. (16 i) lias already been differentiated above from the two preceding species. The 
glossy light mouse-grey colouring is only varied by the orange of the vertex and thorax above (scarcely discer¬ 
nible in Walker’s somewhat worn type from Ega) and a slight darkening of the veins. A good series of EE 
was collected by Collenette at Burity, N. E. of Cuyaba. Also known from S. Peru. 
M. cinctata. An isolated species, which may provisionally form a second section of Myrice ; in any case 
having no connection with Eudule, to which Dognin originally referred both his $ type (cinctata ) and his neorina. 
Hampson, in some MS. notes on the types, first associated the two and gave the correct subfamily reference 
and the following structure clues for the E: Antenna serrate and fasciculate; hindleg aborted, tibia dilated 
with fold and tuft, no spurs, tarsus aborted and bent out at right angle. Forewing with vein 10 from 11. ana¬ 
stomosing with 8. 9. Hindwing with 8 shortly anastomosing with the cell, 6. 7 stalked, 5 central. Subsequent 
correspondence with M. Dognin elicited the further information that the $ was 2-spurred and that “in general 
aspect neorina and cinctata seem to fit quite well in the vicinity of inaequalis” , though rather larger; he ad¬ 
mitted that they might probably form a single, sexually-dimorphic species but was not entirely convinced. 
cinctata. — $-f. cinctata Dogn. “Fulvous, the veins brown, a straight streak bounding the cell, a broad brown outer 
neorina. border, broader at the apex of each wing. Underside as upper, but.yellow, not fulvous. 25 mm.” — rf-f. neorina 
Dogn. " Base of both wings up to discocellular ochre yellow (shade of orilochia Druce [Eudule]), then blackish, 
the veins black. Underside paler yellow (not ochre), with a small discal point, the yellow more extended than 
on upperside, roundedly on forewing, prolonged on hindwing almost to anal angle but the apical part more 
widely blackish; veins scarcely blackish. 27 mm." Evidently mimetic and perhaps really not so excessively 
rare as it has seemed, though still wanting in our British collections. Both types came from Loja. 
28. Genus: Trieliosterrlia Warr. 
The American representatives of the Somatina group (or those which are at present regarded as such) 
have not yet been reduced to any very definite system. Some valuable clues have been found in the genitalia, 
but until many hundreds more species have been studied, it is impossible to base a new classification on them. 
Here, as throughout the Sterrhinae, 1 am following the sequence of the “Lepidopterum Catalogus”, which has 
utilized most of the generic names hitherto established and has recorded a preliminary endeavour to group 
nearly allied species together. Of a few’ genera — and the present one is a case in point — next to nothing is 
yet known taxonomically. It was proposed for olivata Warr. , considered to be a development of Sterrlia and 
diagnosed only by two E structures: Hindtibia thick, clothed an the innerside with a tuft of thick hair, 1st 
segment of tarsus swollen pouch-like, and as long as the other 4 together; antenna with long pedicillate fascicles 
of cilia, ciliated themselves laterally and apically. Tw o other species, known only in the $, were conjecturally 
associated with it. but have since been removed: one, on the other hand, has been added by myself. I call 
the E antenna bipectinate. with moderate, slender branches and find only 1 true spur on the E hindtibia, while 
the $ always has 4 (not 2, as Warren indicates). The areole is double, with the 2nd subcostal arising from 
the cell. The hindwing has the 2nd subcostal stalked, but never very long-stalked, the 1st median separate. 
olivata. T. olivata Warr. (15 c). Face, palpus and tibial tuft black. Perhaps the most distinctive points in 
the wing-markings are the sinuous white outer line and, on the forewdng, its reddish and black subapical suf¬ 
fusions. Sante Domingo, Carabava, S. E. Peru; also (1 §) Baeza, E. Ecuador. 
apiozona. T. apiozona Prout. Described as a Hamalia, but evidently quite close to olivata, though the E is still 
unknown. Hindwing with the 2nd subcostal very shortly stalked. Postmedian of forewing more strongly pro¬ 
duced at 1st—3rd radial, a greyish subterminal band above (only conspicuously dark at posterior end), be¬ 
coming on the underside a strong dark terminal band. Hindwing rather narrow, distal margin almost straight 
from 1st radial to near tornus. Rio Janeiro, 2 
29. Genus: Xystrota Hulst 
This genus, in which, notwithstanding its different shape and markings, I at one time inclined to merge 
Trieliosterrlia, has similar palpus, E antenna and venation. Xystrota, on the other hand, has the E hindtibia 
slender, spurless, the tarsus simple, less short than the tibia. Unless it might be sunk to Acratodes (as has been 
done in effect by Barnes and McDunnough. though they do not employ Gttenee’s name), Xystrota must 
be considered as containing only one species. 
rubromargi- X. rubromarginaria Pack. (= ferruminaria Zell., rubromarginata Pack.) (15 c). This well-known North 
"aria. American species was.for many years known as hepatic aria Guen., but this has been shown to be a complete 
misidentification (see Scelolophia). It is moderately variable in depth of colour, the median area commonly 
more or less darkened, sometimes quite band-like. Described from Cafifornia, ferruminaria from Texas, but 
