110 
MACROGLOSSA RUFICAUDIS. 
I am not disinclined to believe that Ruficaudis is but a form of Thysbe, as one of my examples of the former is plainly though 
not deeply dentate on the inner edge of marginal band of primaries. This marginal band can scarcely he of much value specifically as 
in another example of Ruficaudis it is not widened perceptibly in the middle, but its inner edge runs in a regular line nearly as in 
Gracilis, but in the white anterior and median legs, and all other particulars, it agrees with the many other examples of Ruficaudis be- 
fore me. 
In another example of Thysbe the interspacal points of inner edge of marginal hand are exaggerated to such an extent that one 
of them reaches to the discoidal cell : in this example the marginal band is of great width, as are also the brown basal parts, leaving 
comparatively little vitreous space. 
MACROGLOSSA AETHRA. Strecker. 
Described on p. 107. 
(PLATE XIII, FIG. 2.) 
MACROGLOSSA FUMOSA. Strecker 
Described on p. 93. 
(PLATE XIII, FIG. 3.) 
plate. 
I have nothing to add to the original description of these two insects, save the figures on the present 
MACROGLOSSA FLAY OFASCI AT A. Barnston. 
Walker, C. B. M„ Yol. VIII, p. 87 (1856). 
Clemens, N. Am. Sph., Jnl. Acad. Nat. Sc., Phila., p. 131 (1859). Morris, Cat. Lep. N. Am., p. 17 (1860) ; Synopsis Lep. N. 
Am., p. 151 (1862). 
Lepisesia Flavofasciata, Grote, Proc. Ent. Soc., Phila., Vol. V, p. 39 (1865) ; Bull. Buff. Soc. Nat. Sc., Vol. I, p. 17 (1873), Vol. II, 
p. 225 (1875). Grote & Robinson, Proc. Ent. Soc., Phila., Vol. V, pp. 149, 171 (1865) ; List Lep. N. Am., p. iii (1868). 
(PLATE XIII, FIG. 4 9.) 
Expands nearly If inches. 
Head and thorax above yellow; palpi black at sides, yellowish beneath ; abdomen black, yellow on. basal 
segment, and yellow lateral tufts on last segment; anal brush black ; legs and under surface of body black, 
a yellow spot on middle of last segment. 
Upper surface; primaries blackish, with a broad paler sub-terminal band and black discal spot. Secon- 
daries bright yellow, black at base, and with an even, not broad, black margin. 
Under surface: submarginal band sparingly scaled, space interior to this ochraceous, marginal band 
blackish ; costa edged with black. Secondaries same as above, but yellow median space much paler, and 
inclined to ochraceous, also a yellow spot at base. 
Habitat. Canada, Mus. Am. Ent. Soc. ; Holyoke, Mass., Mus. Strecker. 
The ornamentation of the wings is the only point worthy of note in which this species differs from others of the genus Macro- 
glossa; superficially, the wings have more the appearane of Pterogon. 
Grote, in erecting his genus Lepisesia, speaks of it as : “A genus hitherto confounded with Macroglossa, but more nearly allied 
to Sesia, from which, however, it is quite distinct.” Were he to use the term Sesia in its correct sense, the alliance would be exceed- 
ingly slight ; indeed would extend only to the fact that in many species of both genera the wings are hyaline ; but in using the term 
Sesia, he alludes' to the clear-winged species of Macroglossa, such as Diffinis, Bdl., etc., to which Flavofasciata is certainly allied, as it be- 
longs to the same genus. The grounds for separating it therefrom, as designated by Grote, are entirely too weak to be of any value.” 
“Head smaller and more obtuse than in Macroglossum." Smaller than M. Stellaterum it certainly is, and so is the whole insect, 
but than M. Croatica it is just as certainly not smaller, but the same in size ; as are also Bombyliformis, Fuciformis, and the other clear- 
winged species. Neither can I see that the head is more obtuse than in those mentioned, though it is more so than in M. Thysbe. 
Nor can I see, after careful measurement, that “the eyes are smaller, compared with Sesia,” (as he calls the clear-winged species of 
Macroglossa ;) compared with Thysbe they are larger, taking the relative size of the two insects into consideration. 
“The anterior wings are relatively much longer, narrower, external margin more oblique than in Macroglossum •” he should 
have added Stellaterum, but agreeing in this with M. Croatica. 
“The costa is medially depressed ;” so is it, more or less, in over half of the examples of Macroglossa that I possess, both opaque 
and clear-winged. 
“The sub-costal nervure is curved upward, beyond the discal cell so it is in Croatica and some examples of Thysbe, Axillaris 
and others. 
“The posterior wings are small ;” no smaller than in Croatica, Axillaris and Fuciformis ; larger than in Bombyliformis. 
“First, second and third median nervules less propinquitous than in Macroglossum ; more curved I cannot see that these ner- 
vules are further apart than in Croatica, Bombyliformis and others. 
“The abdomen is more smoothly scaled and less obtusely terminated than in Sesia;” not more smoothly scaled than in Thysbe, 
Axillaris, Bombyliformis and Croatica ; more smoothly scaled than Fuciformis and Ruficaudis. 
