14 CHE [MMATURE STATE OF THE ODONATA. 



Until now only one species, M. transversa, has been raised; a second is 

 supposed to belong to M. Illinoiensis, because two larva' have been found 

 in Massachusetts, where ibis species is the only one caught till now. A 

 third is supposed to belong to M. maguifica, because a specimen and a 

 nympha skin were found in the same locality and at the same time in 

 Washington Territory (though nympha and imago are of different sexes), 

 and no other species is known in this region. Other suppositions are sug- 

 gested, but yet to be proved. At all events, it is undoubted that all species 

 described belong to Macromia. 



2. MACROMIA TRANSVERSA. (Raised.) 



Plate I. Fw 3. 



Imago. Libellula transversa Say, Journ. Acad. Philad., VIII. p. 19. 3, male. 

 K] 'Ophthalmia cinnamomea Burm., Hilb., II. p. 845. 2, female. 

 Didymops Servillii Ramh., Neur., p. 142. 1, male. 

 ]>i lymop3 transversa Hag., Syn. X. A. Neur., p. 135. 1. 



Macromia transversa Selys, Syn. Cordul., III. 70. (Second Addit, p. 44, accepted 



as Subgenus Didymops.) 



pka. Packard, First Ann. Rep. on the Injurious and Beneficial Insects of Massachu- 



- 18tb Ann. Rep. Mass. Board of Auric, 1871, p. 379, Didymops ? pi. l,f. 11. 



The same (separate), Boston, 1871, p. 31, pi. 1, f. 11. — Only the figure is 



repeated, Pack., Guide. 3d ed., p. 713, pi. 15, f. 11 ; also in the following edit. 



(to 8th, 1884) The plate 15 is the same formerly pi. 1. The same figure 



numbered Fig. 99 is repeated by Packard, Amer. Naturalist, 1871, Vol. V. 



p. 427. The figure is hardly recognizable. (The type now in the Cambridge 



Museum.) 



Four specimens have been raised : a female and its nympha skin, Wo- 

 burn, Mass., from J. G. Shute ; a female and its nympha skin, Worcester, Mass.. 

 from E. G. Ham. May 8, 1878; a male raised and another male just trans- 

 forming. New England. Full-grown nymphae or young ones of different 

 size, dry and in alcohol, Cambridge, Mass., H. A. Hagen ; Salem, Mass., 

 coll. by Joseph True (type figured by Dr. Packard); Mass., from Fr. San- 

 bom ; Orono, Me., from Prof. Fernald ; Lake George, N. Y., H. A. Hagen ; 

 Ithaca. N. Y., Pro!'. Comstock ; from Cedar Lake, III, October 17, 1882, and 

 from Mackinaw, McLean Co.. 111.. August 20, 1879, both from Prof. Forbes; 

 from Green River, Ky., near Mammoth Cave, November 5, 1874, from F. W. 

 Putnam ; from Texas. Mr. Stolley. 



