JAPANESE DRAGONFLIES OF THE FAMILY CALOPTERYGIDAE. 159 
Length of the hind wing o' 24-26mm. 25mm. 
Length of the pterostigma ^ 2.5mm. 
Form and color like the preceding species, but differs from it in the 
following points. 
1. Size much smaller in both sexes. 
2. Male. Hind wing not so strongly dilated, the opaque band much 
more reduced — its proximal end lies far distally from nodus. 
3. Male. Fore wing with a black speck at the apex. 
4. Male. The terminal four segments of the abdomen black. 
5. Female. Color of the hind wing paler. 
6. Female. The yellow dots on the last two abdominal segments smaller 
and inconspicuous. 
Noni. Jap. Ko-nakahaguro-tombo. 
Loc. Loo-Choo. 
Genus Bayadera Selys. 
13. Bayadera hyalina Selys. 
Bayadera hyalina Selys, Synop. Calop. add. IV. p. 27 (1879). 
” Ris, Suppl. Ent. I. p. 50. Textfig. 3. T. IV. fig. 1 
(1912). 
Nom. Jap. Hime-kawa-lombo. 
Loc. Formosa (Sauter, Matsumura). 
Genus Rhynocypha Rambur. 
14. Rhynocyyha 14-maculata Oguma. sp. nov. 
(Textfig. 3.) 
Length of the abdomen 'q 19mm. 
Length of the hind wing 'g' 23mm. 
Length of the pterostigma ^ 2.5mm. 
Male. Head : black, two small spots near the eyes and a long marking 
along the posterior margin yellowish white. Labium whitish, scarcely black 
tipped. 
