80 MR. F. F. LAIDLAAV OX THE [Feb. 4, 



Onychogomjyhus geometriaiis, var. nigrescens n. (Kwala Aring, 

 Kelantan), 5 • 



Legion Gomphoides. 



Sieholdius gi-andis ( S , Gunong Inas, Perak). 



Legion Lixdexia. 



Gomjjhidia perakensis, sp. n. ( cj , Giinong Inas, Pei-ak). 



Legion Gomphus. 

 GoMPHus coxsoBEixus sp. n. (Plate Y. fig. 5.) 



Length of abdomen 31 mm. Length of hind wing 26 mm. 

 Length of pterostigma 2 mm. 



Fo)-e wing. No basal subcostal nervule. Sectors of the arculus 

 distinct at their origin, then converging, meeting for a short 

 distance, then diverging \ 11 antenodals, 10 postnodals. Ptero- 

 stigma bro-svnish black, thick. Triangles free. 



Hind icing. 10 antenodals, 10 postnodals. 



Reticulation black, membranule almost entirely absent. 



General colour dull bronze-brown, lower surfaces of head and 

 thorax greenish yellow. Dorsal surface of thorax dark brown, 

 with two lighter submedian somewhat obhque bands diverging 

 from each other from above downwards, each joining a lighter 

 transverse antehumeral mark so as to make a 7 on either side. 

 Sides of thorax lighter bronze. 



Abdomen almost black, first segment gi-eenish yellow; sides of 

 second segment, a very fine doi"sal longitudinal line on the second 

 segment, and the auricles yellow. Segments 1, 2 somewhat 

 dilated, 3 to 7 thin cylindrical, 8 to 10 dilated and progi'essively 

 shorter. 



Appendages black, upper pair of about the same length as the 

 tenth segment, widely diverging from each other, tm-ned up and 

 pointed at their ends, each with a small tooth on the margin at 

 about half its length. Lower pan- diverging, rather shorter than 

 upper pair, each terminating in a laterally directed point. 



A male and a female were taken at Kwala Ai'ing. The female 

 had only very recently escaped from the larva and is too much 

 withered to desciibe. 



There seems no doubt that this is a true Gomphus belonging 

 to Type A of Selys (Mon. Gomph. p. 376). The occurrence of a 

 member of this group in such a locality is remarkable, 



OXTCHOGOMPHUS GEOilETEICUS XIGKESCEXS, Var. n. 



One 2 from Kwala Aring, Kelantan. 



Closely allied to 0. geometricus de Haan. 



Head, prothorax, and thorax as in 0. geometricus. 



Posterior surface of fii'st pair of femurs yelloic. 



Abdomen black, marked with yellow as follows : — a dorsal band 

 on the first and second segments, decreasing in size from before 

 backwards, the sides of these segments are yellow. The auricles 



1 This feature is not sliowii iu the fisure. 



