166 
Bulletin Wisconsin Natural History Society. [Vol. 10, Nos. 3-4. 
ma in which the male superior appendages are supplied with an 
introduced tubercle. From either of these it differs in that the 
colors of 3 to 5 are largely metallic green—more black in its rela¬ 
tives—and in the spot on 2. This spot takes the form of an or¬ 
bicular in the other species, that of a French circonflex in lunifera 
—hence its name. 
As regards the ethology \ of the species Mr. Whedon writes 
as follows: “Manning is a small town on the West Nishnabotna 
river in the southwestern part of Carroll County, Iowa. During 
a collecting trip through the central, western, and northwestern 
parts of the state in 1908, two days, June 21 and 22, were spent 
there. A large part of the lowlands were under water; this threw 
what was regularly the marginal vegetation of the sloughs out into 
the water.The weather was now bright, now cloudy and 
always very warm. 
“Three localities were worked as carefully as time would allow, 
—a small creek near the town, a slough covering an acre at the 
Milwaukee bridge and the “Great Western Lake,” a large pond 
formed by a dam in the pleasure grounds of this railroad, a mile 
and a half south of the town. 
“The latter place was visited from 4 to 6 p. m. on June 21. 
Among the Zygoptera obtained in the grasses about the edge of 
the water were Ischnura verticalis, Lestes unguiculatus, Bnallagma 
hageni, Bnallagma antennatum, Coenagrion resolutum and the new 
Bnallagma described above. Bnallagma lunifera Muttkowski was 
taken as it flew rather close to the surface about the bases of tufts 
of grass a foot or two from the shore. Its short heavy body and 
bright blue and black coloration quickly attracted the collector’s 
attention to it. No females were seen in company with the males. 
“A single male was also taken at Correetionville in the north¬ 
western part of Woodbury County on June 23, this time about a 
ditch along the railroad.” 
It is evident at once from Mr. Whedon’s statement that the 
habits of this new Bnallagma are remarkably similar to those of 
Coenagrion resoutum. The habits of the latter I have described 
in a recent paper (A Synonymical Note, pp. 166-169, 1912) pub¬ 
lished in this bulletin. Coenagrion resolutum likes to fly in wet 
places between the blades of grass and also over the shore water 
between isolated tufts of Iris and grass. 
