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Show 1902.] DRAGONFLIES OF THE "SKEAT EXPEDITION." 83 have, when looked at obliquely, a very faint whitish "smoky" appearance. Head small, black save for a yellow transverse band on the 'frons' before the eyes, stopping abruptly at its anterior edge. Lyes _ distant. Occiput with the two convexities at its hinder margin more pronounced than in S. japonicus. 1 rothorax black; at its hinder margin a transverse yellow band tapering laterally. In front of this is a yellow spot. The colouring of the thorax is just as described by Kriiger for the female. On the upperside a yellow band runs from the front margin up to the yellow marking in between the wings; this band is twice as broad in front end as it is at its hinder end. On either side are two fairly broad yellow oblique bands. The abdomen is ringed with black and yellow ; the first segment is yellow with a black mark on either side. These black marks are continued on to the second segment, in which they run a little obliquely up to the dorsal surface, meeting at the hinder end of the segment; a fine black ring runs round its posterior margin. This segment is black below, and the auricles are tipped with black continuous with the lateral stripes. The yellow ring of segments 3-8 occupies the following portion of each segment: the front two-fifths of 3, the front one-third of 4, 5, one-fourth of 6, 7, two-fifths of 8 ; 9 and 10 are entirely black. There is a very fine mid-dorsal black line in 3 ; this is present, increasing in breadth as one passes back from 4-7, but absent in 8. The appendages of the tenth segment agree very closely with those figured by de Selys for S. japonicus (Selys, Mon. Gomph. pi. xiii. fig. 3 b). The upper pair are rather shorter than the tenth segment, slightly ciliated except at their end, which is sharply pointed and curved upwards ; they carry two teeth on their lower side, one at about a third of their length rather blunt, directed downwards and a little outwards, the other at the end of the second third, sharper and curved backwards. The lower pair about half the length of the upper pair, thick and blunt. The femurs of each leg have a number of short prickly spines on their outer lateral face ; the hinder pair have a few delicate hairs on their upper surface. All have short tooth-like spines in regular rows along their lower sides. A single specimen ( S ) was caught at the foot of Gunong Inas (about 1000 feet above sea-level) near a small jungle-pool, in January 1900. Family CALOPTERYGID/E. Subfamily CALOPTERYGIX.!. The following is a list of the Caloptcrygines mentioned in Kirby's Catalogue or elsewhere as known to occur in the Malay Peninsula up to 1890 :- Neurobasis chinensis Linn. Vestalis amcena Hagen. 6* |
