Dragonflies from Sierra Leone. 215 



species is named after Mr. Heibcit Campion, wlio first 

 observed its ijeculiar I'eatiires. 



cJ (adult). — Labium liglit yellow, with a broad median 

 black stripe. Labruui black. Face light greenish yellow 

 Frons metallic greenish blue, liglit yellowish at antero-lateral 

 angles. Vertex metallic greenisli blue, bi'oadly convex, 

 very slightly emargniute. Frothorax black, a median si)Ot 

 and the vertically erect margin of posterior lobe greeni^-h 

 yellow. Thorax deep black, with light yellowish-green 

 markings : — a narrow line at each side of median suture; in 

 front of humeral suture a narrow dorsal dot and a point in 

 middle of suture itself ; two broad lateral stripes, first one 

 from the metastigma to a little more than halfway to humeral 

 suture, second one on posterior two-thirds of metepimeron, of 

 \\hich the posterior ventral angle remains black ; anterior 

 margin of bnth stripes slightly concave, of first one near 

 dorsal end, of second one in middle. Ventral surface dull 

 greenish grej', sutures lined with black. Legs robust, 

 black; first femora yellow internally. Third femora with 

 very numerous, about 30, very small, regular, triangular 

 denticles ; second femora with similar, but still more closely 

 arranged and gradually lengthening denticles. Spines of 

 tibiye rather robust, about 10 on third tibit(\ Teeth of tarsal 

 clciws robust, remote from end. Abdomen relatively short, 

 slender ; basal segments slightly widened laterally and 

 dorso-ventrally ; 8-5 very narrow ; G-8 with slight fusiform 

 dilatation. IJlack, with yellow markings: on segment 1 

 a broad lateral and small, triangular, postero-dorsal spot ; 

 on 2 a large lateral U-sliaped spot and mid-dorsal, pos- 

 teriorly narrowed stripe ; on 3 a lateral stripe, narrowly 

 interrupted at the transverse carina ; on 4 two small lateral 

 spots on anterior half ; on 5 a small antero-lateral spot ; 

 wholly black ; 7 witii a large elliptical spot on each side, 

 extending over the entire width and three-fourths of the 

 segment's length ; 8-10 black. Ventral surface black, with 

 yellowish median spots on s^^gments 3—7. Superior appen- 

 dages about as long as ninth and tenth segments together, a 

 little longer than in A. klin</i, but scarcely different in form. 

 Inferior appendage very little shorter than superiors. Geni- 

 talia of second segment: hamule generally as in the other 

 two species, internal branch very thin, almost vertical ; lobe 

 narrowly elliptical, of about equal height as the hamule. 



Wings slightly stained with greyish yellow, golden ytllow 

 at base : in fiont wing a vestige in * sc. and cu., in hind wing 



* Tor au explanation of the terminology employed bv Dr. Eis in 

 describing the veins and spaces in the wings ot Libellulinje, see ihat 

 author's monograph of the subfamily, fasc. ix. pp. 14-16. — H. C. 



15* 



