Hagen.) 964 [January 22, 
4. Libellula pulchella Drury. Hag. Syn., 153, 8. 
No. 3. ¢?, Milton, June 1821. 
No. 14. $2992, Lib. pulchella Drury; bifasciata F.; versicolor? 
F. Borders of ponds, July 1, 1826; New York, Calverley. 
It isthe Lib. bifasciata Say |. c., 20, 6. 
5. Libellula quadrimaculata. L. Hag. Syn., 150, 1. 
No. 81. 9, u., Lid. ternaria, 8, Say; Stow, Mass., Mr. Randal. 
See the following species. 
6. Libellula semifasciata Burm. Hag. Syn., 151, 2. 
| No. 80. 2, u., Stow, Mass., Randal. ? 9, Cambridge, 1851; New 
York, Mr. Calverley. 
In the catalogue the numbers 80 and 81 are united by Say by a 
brace, with the determination, “ Lib. ternaria Mss., ° 6 (new Neur., 
MSS., 24).” 
The two specimens (both with u) are very important, because they 
are certainly the types described by Th. Say. He gives the locality 
Massachusetts, and adds, p. 22, “I have not seen any other specimen 
than the sexes sent me by Dr. Harris for examination.” 
Farther my statement, Syn., p. 151, that Say confounded two 
species in his L. ternaria, is found correct, the male belonging to L. 
quadrimaculata, the female to L. semifasciata Burm. Besides it is 
curious, but true, as no other specimens exist in the collection, that 
the specimen described as a male by Say is in reality a female. This 
fact is proved moreover by Say’s description,—“inferior process hardly 
one-third as long as the others,” which agrees very well with the fe- 
male, if the anal valves are taken for the inferior process. In the 
male it is half, or more than half, as long as the superior. 
Say states that L. ternaria in some characters resembles L. quadri- 
maculata L. of Europe, but the latter has not the terminal wing 
bands. Apparently it was unknown to him, that the variety L. pre- 
nubila Newm. possesses. terminal wing bands, and Harris’ specimen 
belongs to this variety. 
As Say’s Lib. ternaria confounds two species, and as the male de- 
scribed by him is a female, I believe Burmeister’s name preferable, 
indeed it is very likely that his description was published before 
Say’s; at least it was published at the same time. 
ZL. quadrimaculata is in America a northern species, common in the 
Saskatchawan district; in Wisconsin, where it makes migrations, on 
Lake Michigan, just as in Europe; Rock Island, Ill.; Ogden, Utah; 
Snake River, Idaho; Bridger Basin, Wyoming. The locality Stow, 
