BORNEAN DRAGONFLIES. 



331 



Diagnostic table for males ofBoniean species q/' Khinoc3'pl»a.. 



A. All four wings with opaque areas. 



a. Opaque area of hinder-wing with hyaline windows, 



" mesothoracic triangle " present B. hiseriata Selys. 



h. Opnque area of wings without hyaline windows. 



1. Large antehumeral blue ray on thorax. 



a. Terminal two-fifths of wings opaque B. hnmeralis Selys. 



. Terminal fourth of wings opaque B. eximia Selys. 



2. Antehumeral band of synthorax narrow. 



y. Terminal opaque area of wings beginning at level 

 of prostigina in front ; posterior tibiie not dilated ; 

 slight enlargement of posterior margin of second 



abdominal segment Bhinoci/pha sp. A. 



d. Terminal two-fifths of wings opaque. Posterior 

 tilnae dilated, blue on anterior surface. Marked 

 enlargement of posterior margin of second abdo- 

 minal segment B. cncnUafa Selys. 



B. Hinde.'-wings only with opaque markings. Dorsal marks 



of abd. segments 2-8 red B, JcarscJii Kriiger. 



C. No opaque markings on wings. 



1. Abdominal markings lost B. sfygia Forster. 



2. Dorsal markings on abdomen red, lateral markings 

 yellow. 



a. Apex of clypeus marked with orange-yellow. 



Lateral abdominal markings from segment 2-5 

 broken into an anterior line and posterior spot. 

 The anterior line is entirely fused with the dorsal 

 mark on these segments. From 6-8 the lateral 

 series is represented only \>y an anterior spot fused 



to the dorsal marks B. monltoni Laidlaw. 



/3. Apex of clypeus black. 



Lateral abdominal markings present as a complete 

 band of rather irregular outline on segments 2-7, 

 only fused with the dorsal marks at its extreme 

 base, and not at all on segments 2-3, on which 



segments the dorsal mark is small or absent BJiinoct/pJia sp. B. 



127. Rhinoneura villosipes Laidlaw. 



Rhinoneura villosipes Laidlaw, Proc. Zool. Soc. London, 1915, 

 pp. 33-35 (text-figs. 4, 5 a). 

 1 d . Mt. Kinahalii. 

 Autotype in Bi'itisli Museum. 



128. MiCROMERUS AURANTIACUS Selys. 

 Micromerus aurantiacus Kiiby, Cat. Odonata, p. 115, 

 1 (S S . Linibang. 



129. Micromerus semiopacus Selys. 



Micromerus semiopacus Kii'by, Cat. Odonata, p. 115 ; Ris. Ann. 

 Soo. Entomol. Belg. Iv. 1911, pp. 233-234 (fig. 1). 



3 d d. Lio Matu. 2^6- Ulu Akar, xi. 14. 2 $ Lio 

 Mat IT. 



