biblmm; \i.\ i* 1 1 v. 



1730 .loli. I. Frisch, Beschreibung von allerley [nsecten in Deutschland, Vol. VIII. 



p 20, no ix., pi. ix. f. 1 and 2. The figure belongs undoubtedly to I 

 bimaculata. The shorl description of the nympha is ■ 



ii belongs to a species with a flat abdomen, but he tells nothing else about the 

 Imago, which lias been raised by Dr. II. A. Hagen. 

 Laur. Roberg, De Lihella Insecto, 1732, p. 9, fig. c, d, has given a bad copy of 

 Frisch's figure. 



1749. J. Roesel, Insectenbelustigung, Vol. II. p. ii. no. iii. pp. 20-27, tab 5, f. 1, 2. 

 Roesel figures, f. 1, the nympha, and. !'. 2, the male imago, which In.- had i 

 Cordulia senea. His figures and description are sufficient. 



1771. Ch. De Geer, Me'raoires, Vol. II p. 687, pi. 19, f. 1-:; (German Translation, Vol. 

 II. Tart II. p. 52). The nympha of Libellula fern ribed; the figures 



are indifferent. 



1853. H. A. Hagen, in his paper, " Ueber Leon Dufours Libellen Larven," Stettin. Eutom. 

 Zeit., Vol. XIV. p. 263, describes the nymphae of the group Cordulia . C. aenea 

 raised by Hagen, C. metallica raised by Brauer, and E. bimaculata raised by 

 Hagen. — Translation byA.de Borre", 1881, in Compt. Rend. Ent. Soc. Beige, 

 Vol. XXV. pp. 69, 70. 



1857. Fr. Brauer, Neuroptera Austriaca, p. xv, gives a review of the nymphae of Cor- 

 dulia and Epitheca. 



1871. A. S. Packard. — First Ann. Report on the Injurious and Beneficial Insi 



Massachusetts; 18th Ann. Rep. Mass. Board of Agric, p. 379, pi. 1,1. in, Cor- 

 dulia lateralis Burin. ; f. 11, Didymops (Macromia transversa Say). Both 

 species are described ; the figures are indifferent. The same paper reprinted, 

 Boston, 1871, p. 31. Only the figures are repeated in Packard's "Guide," 3d 

 edit., pi. 15, f 10, 11: also in the following editions to the 8th, 1884. The 

 plate 15 is the same formerly plate 1. The same figures numbered 98 and 

 99 are repeated in Amer. Naturalist, 1871, p. 427. Both types are in the 

 Museum of Comparative Zoology at Cambridge. 



