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Show 1902.] DRAGONFLIES OF THE " SKEAT EXPEDITION." 77 species, at Kwala Aring in September 1899. The male is very young. o*. 2- Length of abdomen (without appendages). 36 m m. 37'5 m m. Hind wing 32 34 Pterostigma 2 2 o* • Antenodal nervures of fore wing 14, postnodal 7, 3. Ante-nodal nervures of hind wing 11, postnodal 7, 8. Supra-triangular nervures of fore wing 3 or 4, of hind wing 2. Nerves of median space of fore wing 6, of hind wing 4. The head in this specimen is badly shrivelled, and it is difficult to make out the characters for the most part; the yellow ' nasus' is obvious. Proihorax dull brown. Thorax iridescent brown, with three yellow lines on each side. The antehumeral band begins at the base of the coxse of the first pair of legs and runs about halfway up the thorax. The middle line commences behind the middle pair of legs and runs up to behind the front pair of wings, running right across the back to join that of the other side. The hinder stripe runs along the hinder outer margin of the abdomen, starting from behind the last pair of legs. The coxaa of the first pair of legs are yellow, as also the hinder surface of those of the second and third pairs. The abdomen is dull brown; segments 1-3 and 7-10 a little expanded. It has yellow markings as follows:-base of the first segment shading gradually into dull brown at its hinder end, second segment has a yellow ring covering its anterior half; third segment has two very small dorsal spots lying very close together just behind the middle of the segment; seventh segment with a transverse dorsal band taking up the anterior fifth of the segment. Anal appendages subequal, or the inferior a very little larger than the two upper, about 3 m m . long, as long as the last two segments. The upper pair have each at about two-thirds of their length a small tooth on the outer side. 2 • Head and thorax as in the male, but the iridescent brown is replaced in the more adult female by rich metallic green. The wings have a number of vague brown marks on their outer halves. Abdomen. Segments 1-6 metallic black, 7-10 dull black. Yellow markings as follows :-second segment a long spot on either side, a transverse line along its anterior margin dorsally, two small dorsal spots at about the middle of the segment; 3 with a line on either side along its lateral anterior margin not reaching the dorsal surface; 7 as in the male, but the yellow mark is broader, covering about one-fourth of the segment. As Kriiger has pointed out (loc. cit.), M. gerstaeckeri differs from its allies in its smaller size; and in the position of the small second tooth of the superior anal appendages of the male from the |
