56 INDEX TO MISSOUKI ENTOMOLOGICAL REPORTS. 



AGROTIS JACULIFERA Guen. (Rep. I, p. 82) This is the true subgothica of Haw- 

 (See Grote, List of Noctuida? of N. A., Bulletin Buffalo Soc. Nat. Sc. II, 1874, and Lint- 

 ner 1. c.) 



AGROTIS DEVASTATOR, Brace (Rep. I, p. 83) Grote refers it to Radena. 



CEL^NA RENIGERA Stephens (Rep. I, p. 86) Referred by Grote to Hadena. Speci- 

 mens in the Fitch collection marked with names (evidently from Walker) infecta, egens, 

 deftctua, siibcadem ? and murcimaculata seem to be all synonyms and mere variations. 



PRODENIA AUTUMNALIS Riley (Rep. Ill, p. 116 and subsequently) As stated in the 

 8th Report (p. 48) this in the more typical form is recognized as Laplujgma frugiperda, 

 Sm. & Abb. The variety obscura, as Prof. Zeller, who has seen it, informs me is so near 

 the European exlgua Hiibn. that it is not easily distinguished. 



PRODEXIA COMMELINJE, Sm. & Abb. (Rep. I, p. 88, and III, p. 113) Dr. Leon F. 

 Harvey (Bull. Buff. Soc. Nat. Sci., vol. II, pp. 274, 275; 1875) has since proposed 

 specific names for two of the forms hitherto considered to be but varieties of comme- 

 1hi(p. The moth represented at Fig. 43, c, of the Third Report, is named by him 

 flavimedia, that at Fig. 48, 1), lineatella, the true commelina', being a larger species. 

 From larvse with the series of black triangles bordered exteriorly by a yellow line (such 

 as are represented on Plate I, Fig. 12 of Rep. I, and at Fig. 48 a of Rep. Ill) I 

 have bred the flavimedla. But larvre found on cotton in the Southern States, and differ- 

 ing in having black triangles on the second joint only, and also varying greatly in 

 coloration, have produced the same moth. Abbot's figure of the larva of commelince 

 shows the full series of black triangles, but without any yellow exterior line. 



GORTYNA NITELA Guen. (Rep. I, p. 92) I have proved by breeding that G. nebris 

 Gn. is but a large, southern form of this species. In the Southern States it is most 

 common in stems of Ambrosia trificla, often producing a swelling or pseudo-gall. 

 Both forms are indiscriminately bred with intermediate variations. See an article 

 "by Miss E. A. Smith (7th Report on the insects of Illinois, Cyrus Thomas, pp. 112-114) 

 for additional food-plants and the habit of the younger larvte to infest wheat-stalks, 

 corn, etc. See also Am. Ent.I, p. 252; my "Potato Pests" (Orange, Judd & Co., 1877, 

 p. 91) and Prairie Farmer, August 11,1877. The insect normally pupates in the stem 

 and when infesting thin stalks like those of most cereals and blue-grass (in which it 

 is also found) often of necessity leaves one stalk for another. 



ANOMIS XYLINA, Say (Rep. II, p. 37; VI, 17) This has since been referred by Grote 

 to Hiibuer's Aletia argillacea, which has been generally adopted. See Bulletin 3 of 

 the Commission on the Cotton Worm. While it will doubtless be found convenient in 

 future to separate it from the other species of the genus Anomis, and Hiibner's generic 

 name may therefore obtain, I must confess, after a careful examination of Hiibuer's 

 figure of argillacea, to grave doubts as to the correctness of Grote's reference thereto of 

 our Cotton-worm Moth (xi/lina, Say). Hiibner's figure lacks several of the most con- 

 stant characteristics of xylina. It is fulvo-testaceous shaded with brown, with the 

 under side bright yellow. It lacks the three white specks on primaries and has a dark 

 (orbicular?) spot in place of the outer one. It has a large white circular spot with black 

 annulus in place of the dusky elongate discal spot with its double pupil. The wavy 

 lines are almost black and differ in form ; the fringes are nnicolorous, and the abdomen 

 is narrower. The figure more nearly represents in fact a species which I have received 

 from Bahia, Brazil, and which differs from xylina, though the larva (also quite differ- 

 ent) feeds on cotton. 



We are all inclined to follow determinations of those who make a specialty of any 

 group, but after due allowance for faulty coloring in Hiibuer's figure, I am constrained 

 to believe that in this instance Mr. Grote has been in fault. 



CANKER-WORMS (Rep. VIII, p. 12) For additional remarks as to the generic char- 

 acters of the two Canker-worms, see my paper "On the differences between Anisopteryx 

 pometaria Harr. and Anisopteryx (csculariaW. V., with remarks on the genus Paleacrita.* 

 (Trans. Ac. Sc. St. Louis, Vol. Ill, p. 573 if.) 



