THE IMMATURE STATE OF THE ODONATA. 93 
ut ends, and more nearly meeting than in AS. mixta. Movable hooks as in 
i. mixta. Prothorax similar to Ai. mixta. Processes blunt, depression be- 
tween them very shallow, of nearly equal size. Abdomen more slender. 
iron gray; the whole insect of this color; dorsal band darker, interrupted by 
lighter spots, Lateral spines on segments five to nine, that on fifth very small. 
Spine of ninth shorter than tenth segment. Finely granulated; hairs pale, 
and when present finer and shorter than in mixta. Appendages similar, 
except lateral superiors, only half as long as middle one, somewhat longer 
than male projection. The nympha described is the type of Hagen, Stettin 
Zeit. XIV. p. 267; and F. Brauer, Neur. Austr. p. xvi. 
16. ASCHNA EREMITICA. 
PratEe IT. Pre. 2: 
Seudder, Proc. Boston N. H. Soc. XI. Ds 23: 
Nymph, male and female, skins, and some not full-grown, in alcohol. 
Length, 39 to 47mm.; breadth, 10mm. Locality, mouth of Red River of 
the North; Hermite Lake, White Mountains, New Hampshire, Mr. Sanborn ; 
Minnesota. Coll. Mus. Comp. Zoil. 
Sinilar in general shape to A®. rufescens. Head much larger, remark- 
ably large in proportion. Eyes large and prominent. Occiput not very 
deeply notched behind; sides oblique, and rounded at hind angles; three 
polished spots on middle; polished bands on hind angles. Antenne, third 
joint nearly as long as first and second; fourth, about one half third ; other, 
somewhat longer. Mask broad, passing through middle legs, gradually en- 
larged forward; base more than half width of front border ; middle third 
produced in small rounded lobe, cleft and with comb of hairs. Palpus cut 
straight at end; rather flat, nearly or quite smooth. End hooks short: 
movable hook bent, sharp, reaching base of opposite one. Prothorax as 
broad as hind part of occiput. Legs slender, hind legs reaching ninth seg- 
ment. Femora with dark ring on lower part. Processes long, of equal 
length, sharp, enclosing somewhat less than right angle, a little bent out- 
ward. Wing cases reaching segment five. Abdomen rather broad ; enlarged 
gradually to seventh segment, thence tapering rather abruptly. Segments 
with four dorsal and four lateral darker spots, and two polished impressions 
on each side; tenth seement shortest. Lateral spines on segments five to 
nine, that on ninth nearly as long as tenth segment. All segments finely 
