1922.] F. F. Laidlaw : Indian Dragon/lies. 381 



Male. Head. — Lower lip yellow. Upper lip yellow with black 

 line at base produced as a triangular mark in the middle line. Genae 

 and bases of mandibles yellow. Ante- and post-clypeus yellow, the 

 latter with a pair of small black marks where it joins the frons. 

 This has a black band running from one eye to the other just 

 above the clypeus, but is otherwise yellow, its crest not inflated. 

 Vertex and occiput black, the latter with a slightly concave mar- 

 gin, without hairs. 



Prothorax black, its anterior margin lined with yellow, and 

 with a small lateral spot on the posterior margin, and a median 

 spot of the same colour. 



Synthorax largely yellow, the dorsum black marked with yel- 

 low as follows : a mesothoracic collar, not interrupted, and in the 

 middle line sending a short projection upwards along the mid-dor- 

 sal carina ; a pair of oblique dorsal markings, pointed above and 

 below, on either side of the mid-dorsal carina, not reaching to the 

 mesothoracic ' collar ' nor to the ante-alar sinus ; above and to 

 the outside of these markings a pair of small triangular spots, 

 with the apices directed anteriorly ; and lastly a minute yellow 

 spot between the ante-alar sinuses. Laterally a black band less 



Fig. 4.0. — Colour-pattern of Microgomphns tovquattis (Selys) 8 , 

 semi -diagrammatic. 



than half a millimetre across, runs obliquely downwards from be- 

 low the front pair of wings to the base of the posterior coxa. 



Legs black, the postero-lateral surfaces of the first, and the 

 proximal half of the posterior surface of the third pair marked 

 with yellow. The anterior surfaces of the femora are thickly 

 studded with fine, irregularly arranged spines. 



Abdomen black. Dorsum and sides of first segment with 

 yellow marks. Second segment yellow on the sides, and with a 

 yellow mark on the dorsum, not reaching the apex of the segment, 

 pointed distally and widened at its middle rectangularly. The 

 third segment has a yellow mark on either side at its base, extend- 

 ing for rather more than a third of its length distally, and a dorsal 

 triangle of the same colour, its base resting on the basal margin 

 of the segment. In the middle of the distal half of the segment 

 is a narrow oblong-oval yellow spot dorsally, and on either side of 

 this a somewhat similar lateral mark. Segments 4-8 have each a 

 basal ring of yellow narrowest on 4-5, lengthening on 7-8, more 

 produced laterally than dorsally, especially on the two latter seg- 

 ments. In addition 4 has a small, longitudinal oval spot, lying 

 mid-dorsally, and occupying about the middle third of the seg- 



