103 



dopterous larvse in Black-knot, which he originall}' mistook for those 

 of tlx' Peach Borer {/Egeria exitiosa. Say:) though he subsequently 

 corrected this error, and stated them to be "the naked caterpillars of 

 a minute moth."* In all probability, these caterpillars, which Harris 

 found in Black-knot, would have produced some one or both of the 

 two species of Moths which I have bred therefrom, namely, the Plum 

 Moth and an undescribed species. Although these larvae had long 

 been noticed by entomologists in Black-knot, yet nobody, as it seems, 

 had ever raised them to the mature state, until I succeeded in doing so. 

 As I have already shown (p. 93 — 4,) the so-called "Curculio Para- 

 site'' of Dr. Fitch preys., in all probability, not upon the larva of the 

 Curculio, as Dr. Fitch erroneously supposed, but upon that of the 

 Plum Moth. I bred a single female specimen of this pretty little 

 Iclineumon-fiy on the 23d of August, from the same vase of plums 

 from which 1 bred all my Plum Moths. 



Tjie Plum Moth; Fig. 3. (i^cmasia prunivora, new species.) Ground- 

 color oifront-wiru/, black. The basal I4 irregularly covered with rust red, 

 so as to ieave only a few black markings. On the costa and rather more than 

 y^ of the way to tlie apex of the wing, a pair of streaks obliquely directed 

 toward the posterior angle of the wing;-f- the inner streak of the pair is on 

 it^ extreme costal end clear white, elsewhere pale steel-blue, and extends 

 nearly to the disk of the wing, where it almost unites with a sub-quad- 

 rangular pale steel-blue blotch, which is usually seen there without difficulty, 

 though it is occasionally subobsolete; the outer streak of the pair is only half 

 as Jong as the inner one, to^^•ards which it converges very slightly 

 without actually uniting with it, and is colored in the same manner. Fur- 

 ther along on the costa, and not quite % of the Avay to the apex of the wing, 

 there is another such pair of streaks, parallel with the first pair and simi- 

 larly colored, the inner one of which, when it has become as long as the 

 inner one of the other pair, sweeps in a gradual curve round the disk of the 

 wing, till it almost attains the inner margin a little way from its tip; while 

 the outer streak of the two is so very short, that the steel-blue part of it is 

 subobsolete anu can only be seen in certain lights. Beyond this second pair 

 of streaks, and rather more than % of the way along the costa to the ape.'C 

 of the wing, is another streak, parallel with all the others and similarly 

 colored, which strikes the outer margin about I3 of the way from the apical 

 to the posterior angle, where it terminates in a .pale streak in the fringe. 



* Compare Harris's Injur. Insects first edition, p. 352, and last edition, p. 80. 

 A writer in the Amcr.Journ. Horticulture (Vol. II. p. 34) has reiterated Harris's 

 original error. 



t III the figure this pair of streaks is erroneously engraved as being rather 

 closer to the second pair of streaks, and rather further apart from each other, 

 than is the case in the natural wing. And the same observation applies to the 

 second pair of streaks as regards its distance from the third group of streaks 

 which consists, not of 2, but of 3. 



