238 
GENUS NEONEURA (oDONATA) 
known, I believe some future student may properly propose a 
new name for the dark form; at the present such a course is not 
justified. In fact, other students at the present time may crit- 
icise my position in regarding as distinct two insects, in which I 
can detect no structural differences. Some more acute student 
may yet detect structural differences, and, in the meantime, sup- 
posing even that real structural differences do not exist, I regard 
as specifically distinct two adult dragonflies of the genus Neo- 
neura, one of which is largely bright red and the other largely 
bright blue. 
The Isle of Pines specimens are smaller than the specimen of the 
same species in the Hagen collection, which is about the same size 
as carnatica. ith the material before me I am unable to give 
characters which I think will prove constant for the separation 
of the females of carnatica and maria. In the female from the 
Isle of Pines abdominal segment nine is black above, ten yellow; 
in a female, almost certainly carnatica, in the Hagen collection 
nine and ten are alike yellow, but this is a character possibly de- 
pendent on age, as the Hagen specimen is less mature than the 
other. The Hagen specimen is one of those mentioned al)ove as 
included under the pin label pahistris. The slightly teneral 
female under the label carnatica, which is probably maria, has 
nine largely brown above with indications that the entire dorsum 
might become darker with age. A mature female of carnatica 
in the Hagen collection unfortunately lacks the three last ab- 
dominal segments. In this specimen the thorax is distinctly red 
as in the male; the thorax of the ecpially mature maria from the 
Isle of Pines is bluish brown above, without a trace of red any- 
where. The color pattern of the prothorax may offer specific 
characters, but one must have a larger amount of material than 
I have to decide this. In the maximum black, as it is found in the 
Isle of Pine males, the following black areas are present: a broad 
longitudinal median bar on front lobe (1), a iDosterior lateral 
spot on either side of the same lobe (2), a narrow longitudinal 
median bar on the middle lobe (3), a posterior mid-lateral spot 
on either side of the same lobe (4), the lateral margins of the same 
lobe (5), transverse anterior narrow stripe on the hind lobe (6), 
an anterior spot at either end of this (7). In maria males from 
Isle of Pines, 1 is very broad, 3 is relatively broad, 5 fuses with 
