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Show 80 MR. P. F. LAIDLAW ON THE [Feb. 4, Onychogomphus geometricus, var. nigrescens n. (Kwala Aring, Kelantan), 2 • Legion GOMPHOIDES. Sieboldius grandis ( S , Gunong Inas, Perak). Legion LINDENIA. Gomphidia perakensis, sp. n. ( S, Gunong Inas, Perak). Legion GOMPHUS. GOMPHUS CONSOBRLNUS sp. n. (Plate Y. fig. 5.) Length of abdomen 31 mm. Length of hind wing 26 mm. Length of pterostigma 2 mm. Fore wing. No basal subcostal nervule. Sectors of the arculus distinct at their origin, then converging, meeting for a short distance, then diverging1. 11 antenodals, 10 postnodals. Pterostigma brownish black, thick. Triangles free. Hind wing. 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 oblique 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 greenish yellow; sides of second segment, a very fine dorsal 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 progressively shorter. Appendages black, upper pair of about the same length as the tenth segment, widely diverging from each other, turned up and pointed at their ends, each with a small tooth on the margin at about half its length. Lower pair diverging, rather shorter than upper pair, each terminating in a laterally directed point. A male and a female were taken at Kwala Aring. The female had only very recently escaped from the larva and is too much withered to describe. 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. ONYCHOGOMPHUS GEOMETRICUS NIGRESCENS, 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 first pair of femurs yellow. 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 This feature is not shown in the figure. |
