BORNEAX DRAGOXFLIES. 79 



about 1 mm. in length. It projects upwards with a slight 

 forward curving. 



The abdomen is very slender. Segment 9 longer than 8. 

 Segments 1-8 of a dull brown colour growing darker from befoi'e 

 backwards, each of the segments 2-8 with a pale narrow ring at 

 either end, 9-10 of a chocolate bronze-colour. The legs are dull 

 yellow, with dark articulations and cilia. 



I cannot at the moment recall any other Malayan Agrionid 

 which has the under surface of the thorax actually darker than 

 the upper side. This peculiar colouring of the thorax, together 

 with the pale yellow legs, gives this insect a very striking appear- 

 ance. It is further distinguished from other species of the genus, 

 which is new to Borneo, by the prothoracic spine. 



Genus Platysticta Selys. 



Platysticta rufostigma Selys. (PI. IV. fig. 9.) 



1 J. Lawas, August 1909, (No. 34.) 



Length of abdomen 34 mm. 



,, hind wing 22 „ 



The specimen agrees in every particular, excepting size, with 

 the type from Labuan. The latter is distinctly smaller, whilst 

 Mr. Moulton's specimen approaches P. quadrata in size. The 

 anal appendages further resemble those of the type of P. rufostigma, 

 and differ completely from that figured by me for P. quadrata* . 



I am thus able to record 13 species referable to the legion 

 ' Protoneura,' arranged in three genera, for the island of Borneo. 



EXPLANATION OF PLATE IV, 



Fig. 1. Ventral view of terminal segments of abdomen of Metaphya micans 

 Laidlaw. $ . 



2. Lateral view of second abdominal segment of MetapJiya micans Laidlaw. 



3. Lateral view of anal appendages of the same. 



4. Terminal segments of Idionyx dohrni Kriiger $ , for comparison with 



tig; 1. 



\ 5. Profile view of prothorax of Amphicnemis louisa, sp. n. $ , 

 6 a. „ „ anal appendages of the same. 



6. „ „ prothorax of A. madelencB, sp. n. <? . 

 6 a. Lateral view of anal appendages of the same. 



7. Profile view of prothorax of A. luallaoei Selys. 



8. „ ,, „ Disparoneura peramoena, sp. n. $ (anterior 

 end to the right). 



8<x. Similar view of male anal appendages of the same species. 



9. Lateral view of anal appendages of Flatysticta rufostigma Selys. $ . 



ISToTE. — Since the above notes were written I have received 

 from Dr. Ris copies of two accounts recently published by him 

 dealing with Dragonflies from the Orient. The first of these 

 (Supplementa Entomologica, Deutsch. Ent. Mus. No. 1, Aug, 1912, 



* Laidlaw & Forster, in Pascic. Malay., Zool. pt. iv. Odonata, pt. ii. p. 9, fig. 1. 

 t The profile figures are drawn on one plane, and, in consequence, the lateral 

 ansi-les are not shown. 



