158 
K, OGUMA. 
This splendid and delicate species of Mnais was collected in Formosa 
by Prof. Matsumura in four male and two female specimens. The fact 
that the poststigmatic cells are arranged in one row indicates some relations 
to the continental species — M. anclersoni and M. earshawi, but on the other 
hand the long stigma of this species shows the near relation to the insular 
species as 31. strigata. As being mentioned above, this species is sharply 
distinguished from other Japanese Jhum by having entirely yellow epimeron 
and by the color of the wings, especially by their strong iridescent nature. 
Genus Nevrobasis Linked«. 
10. Nevrobasis chinensis Linkers. 
Libellula chinensis Sinn., Lyst. Nat. I. p. 545 (1758). 
Nevrobasis chinensis Selys, Synop. Calop. p. 18 (1883). 
Xom. Jap. Atoguro-huca-iombo. 
Loc. Loo-Choo (doutful). 
Genus Euphaea 3 
11. Euphaea formosa Hagen. 
(Textfig. 2, b) 
Euphaea formosa Selys, Synop. 
Calop. add. III. p. 16 (1869). 
Euphaea formosa Pis, Suppl. 
Entom. I. p. 52, figs. 4, 5 
(1912). 
Nom. Jap. Nakahaguro-tombo. 
Loc. Formosa. 
12. Eupnaea yayeyamana 
MATSUMURA.Sp. 110 V. 
(Textfig. 2, a.) 
Length of the abdomen / q 31-32mm. 
^ 26mm. 
Length of the fore wing ^ 27-29mm. 
$ 26mm. 
(■LACHLAN. 
Textfig. 2. 
