INDIAN DRAGONFLIES. 
613 
least halfway between these two structures, Rspl running parallel to Rs and only 
1 row of cells between them, stigma moderately short and stout, membrane 
moderately short and narrow. 
Legs shorii and robust. Abdomen slender. Anal appendages short and 
slender. Dentigerous plate forked with fine, needle-like branches resembling 
those found in Gynacanlha. 
Periaeschna magdalena, Martin, Cat. Coll. Selyj, Mschnines, xix, xx, p. 
157, pi. vi, fig. 22 ; Laidlaw, Rec. Ind. Mus. Vol. xxii, p. 81, (1921). 
Female. Abdomen 67 mm. Hindwing 44 mm. 
Head. Labrum, labium, face and frons reddish browm, the base of the latter 
black with a medial prolongation forward. 
Prothorax and thorax blackish browm marked with a narrow, yellow, ante- 
humeral stripe on each side and 2 broad, yellow stripes laterally. 
Legs blackish brown, reddish at the bases. 
Abdomen tumid at the base, slightly constricted at the 3rd segment, and 
thereafter cylindrical as far as the anal end. Ground colour black marked with 
yellow as follows : — ^segments 1 and 2 with the sides broadly yellow and the dorsal 
Carina finely, the 3rd segment with a basal, lateral spot, segments 4 to 7 with 
similar but less evident spots, segments 8 to 10 unmarked. 
Superior anal appendages fine and short, but slight'}' longer than the 10th 
segment which is very short. 
Wings enfumed, costa dark bro^vn, stigma reddish, short and stout. All wings 
have a basal brown marking which extends outwards as far as the 1st antenodal 
nervure ; membrane white. 
Type female in Martin’s collection Tonkin, Assam. Dr. Laidlaw reports 
a pair from Tura, Garo Hills, Assam, which are now in the Indian Museum. 
Genus- -Austko-bschna. 
Fig. 4. Wings of Austrocesehna intersedens, Selys. (x 2'5). 
Austroaeschna, Selys, Bull. Acad, Belg. Vol. 3. p. 732. (1883). 
Acanthfeschva , Selys, ibid. p. 731, (1883). 
Fiance schna, Maclachlan, Ann. Mag. Nat. Hist.), Vol. 27 (1895). 
Dromceschna, Forster, Ann. Soc. Ent. Belg.), Vol. .52 (1908). 
Austrocesehna, Martin, Cat. Coll. Selys.), Vol. xix, xx (1908). 
