76 MR. F. F. LAIDLAW ON THE [Feb. 4, 



the dorsal spots. Segments 9 and 10 black, segment 10 is very 

 small. Upper appendages black, curved slightly inwards and 

 at first downwards, but at their distal ends they turn up a. little. 

 About halfway along their ventral sides is a small tooth. Ventral 

 appendage black, rather broad and flat, bifid at its extremity, 

 not more than two-thirds the length of the upper pair. 



Legs black. On each of the first pair of femurs is a single 

 spine immediately before the knee. In the second pair on each 

 are three long pairs of spines inclined towards the knee and 

 distant from each other. On each of the third pair of femurs 

 are 4 pairs of large spines, rapidly increasing distally, followed 

 after a gap by a single pair. All inclined slightly towards the 

 knee. On the first pair of tibias are three pairs of long equi- 

 distant spines, on the second and third pair of tibias are four 

 pairs of lai'ge spines. (See text-fig. 12.) 



Text-fig. 12. 



Third leg of OnycJiothemis testacea (X Is). 



A single male from Kwala Ai-ing. 



This species difiers from Onychothemis abnormalis (Brauer, 

 Yerh. Ges. Wien, xviii. p. 170) in having no transverse carina 

 on the fourth abdominal segment, and in having the claAvs of the 

 third pairs of legs without any sign of a tooth. I have not been 

 able to examine a specimen of 0. abnormalis, a Philippine Is. 

 species, but the present species is evidently closely allied to it. 



This genus appears to stand quite remote from other Libel- 

 lulids, not only in the absence of a tooth on the basal claws, but 

 in the remarkable armature of the femurs. The two species 

 of the genus should form an independent subsection of the 

 Zibellulince. 



CORDULIIN^. 



Two members of the subfamily are known to occur in the 

 Peninsula; these are Macromia westwoodi, Selys, and Idionyx 

 yolanda, Selys. To these can now be added Macromia ger- 

 staexkeri, recently described by Kriiger from Java (Krtig., Stett. 

 ent. Zeit. 1899, p. 335), and Idionyx dohrni (loc. cit. p. 326) from 

 Sumatra. 



Macromia gerstaeckeri Kriiger. 



Macromia gerstaeckeri, Kriiger, Stett. ent, Zeit. 1899, p. 335. 



I caught a pair of a species of Macromia, which I refer to this 



