Jan., '04] ENTOMOLOGICAL NEWS. 39 



In liis remarks introductory to this bulletin, on p. 203, Prof. Needham 

 states: "My chief contribution to this bulletin is the description of the 

 life histories and habits of the damsel flies (order Odonata, suborder 

 Zygoptera). I have been able to describe the nymphs of all our 10 

 genera and 23 of our 42 known species all these descriptions being new." 

 And on p. 218 he continues, " Of these 23. three are Caloplerygidae, five 

 are Lestinae and the remaining 15 are Agrioninae ; and fortunately the 

 nymphs of all our genera are now known." 



Directions and suggestions for collecting life history material in this sub- 

 order are given on p. 219. Keys to families, subfamilies, genera and spe- 

 cies of imagos and known nymphs follow. Detailed notes on the scope, 

 range and general ecology of the larger groups are interspersed ; and for 

 each species the more important bibliography, special habits, and a de- 

 scription of the nymph, if known, are given. On page 222, in the key to 

 species of Calopteryx, aniata is stated to have the wings uniformly colored. 

 As orijiinally described by Hagen and as verified by the examination of a 

 considerable number of specimens, adult males have the hind wings api- 

 cally brown. On p. 245, a new genus, Cfiromagrion, is described for 

 Asrion condi/tan Hagen, which, since 1876, has generally been written 

 "*. Erythroimna conditiun. The genus is defined both for the imago and 

 nymph, and finds its nearest affinities with Erythromma and Pyrrhosoma. 

 On p. 251 it is stated, "they (Enallagmas) do not, sofar as I have observed, 

 descend beneath the surface of the water in ovipositing." At Round Lake, 

 Whitley County, Indiana, Enallagma signatmn in couple has often been 

 seen submerged ; and -see McLachlan, Ent. Mo. Mag. (2) Vol. 10, p. 

 207. On p. 253 the name annexion is retained for the species which, as 

 determined by Calvert and Williamson, is identical with cyaihigerum. 

 AgrioTi posHuin Hagen, usually known heretofore as Nehalennia posiia, 

 is, with reason, taken from Nehalentiia, (not Nehallennia, as in the bul- 

 letin under review) and placed in Ischnura, though it also shows affinities 

 with Enallagma. 



Appendix on Odonata, page 263 : " During the past season there has 

 been opportunity for making some further observations on the Odonata- 

 Anisoptera. * * * * It is now possible to add descriptions of the nymphs 

 of eleven additional species with new data on some of the others" dis- 

 cussed in Bulletin 47, New York State Museum, September, 1901, pp. 

 429-540. On page 264, the past confusion between Gomphus fratentiis 

 and G. externus may have resulted from a mistake made by Professor 

 Needham in comparing his specimens with the Illinois State Laboratory 

 specimens, rather than through an error by Hagen, — an error hardly pos- 

 sible in the light of the figures drawn by Hagen for the Monographie des 

 Gomphines, PI. 7, fig. 4, 1855, and PI. 21, fig. 2, 1858. Gomphus borealis 

 is now regarded by Professor Needham as specifically distinct from G. 

 descriplus. Gomphus dilatatns is designated as the type of Gomphurus, 

 and the remarkable nymph of this species is described. On p. 275, the 

 habitats of the nymphs of 62 species of Odonates are given in tabular 



