Neuroptera of the Hawaiian Islands. 231 
Length of abdomen, ¢ 38 millim., ? 40 millim.; length 
of posterior wing, ¢ 38 millim., ¢ 39 millim.; expanse, ¢ 
77 millim., ¢ 80-84 millim. 
I have examined one male and two females (Blackburn, 
No. 16). 
Mr. Blackburn says, ‘‘ This dragon-fly is widely distributed, 
but not common. It occurs at various elevations from near 
the sea-level to at least 4500 feet. I have taken it on nearly 
all the islands.” I think it must be considered a really indi- 
genous species ; at any rate I know of nothing like it. 
The precise position of the species is perhaps open to doubt 
in the present uncertain state of the classification of Libellu- 
lina. At first sight it has somewhat the aspect of a Dythemis, 
but the large posterior lobe of the prothorax precludes any 
such affinity. In the form of the prothorax, slender abdomen 
with much inflated base, and general aspect it may be located 
in Lepthemis as that elastic genus is now constituted ; it prin- 
cipally differs therefrom in the broader discoidal triangle of 
the anterior wing, in the longer and more slender tibial spines, 
and in the form and position of the inner tooth of the claws. 
There appears to be no other defined group with a similar 
prothoracic formation in which it can be placed. 
/AE\SCHNINA. 
Anax junius, Drury. 
This common North-American species (which has been 
also recorded from Kamtschatka and North China) appears to 
be general in the islands. In examining a series of Ame- 
rican examples with regard to the anal appendages of the 
males, [ find a certain amount of slight variation that may be 
partly individual, partly local, in its nature. In two Ha- 
waiian males before me the inferior appendage appears to me 
to be distinctly shorter and more deeply excised in the middle 
than in the American specimens; even if this should prove 
to be constant, it is of no specitic value. 
-Anaa strenuus, Hagen. 
Anax strenuus, Hagen, Verh. zool.-bot. Ges. in Wien, 1867, p. 34. 
The type is a female taken during the Danish ‘ Galathea’ 
expedition, and is in the Copenhagen Museum. It would 
appear to differ from A. juniws principally in its greater size 
(expanse “ 136 millim.,” as opposed to 95-112 millim.” in 
junius) and in slight colour characters. Hagen considers the 
Wks 
