400 ON THE GENUS CORDULEPHYA, 



than the first; the rest of the border carries three much smaller 

 rt)unded teeth similar to those on the left. The mar<ifins of all 

 these teeth are very finely crenulated, and at their tips they are 

 furnished with from two to four short spines, of which the one 

 nearest the terminal hook is the least, and the one farthest from 

 it the greatest (when there are four, however, the fourth may be 

 small also). The whole inner surface of the lateral lobes is 

 irregularly spotted with small black warts and dots, and there is 

 a row of tiny hairs along the inner margin. The lack of symmetry 

 in this remarkable labium is, of course, only to be exj^ected, to 

 enable the two lobes in the position of rest to fit into one another 

 [Plate xi., fig.3, outline of lateral lobe; fig.-i, underview of head, 

 shewing labium in position of rest, with lateral lobes placed so 

 that the tip of each long tooth just rests in the opening of the 

 opposite depression]. Thorax well built, with a sharply angu- 

 lated, transverse, prothoracic ridge: sides of metathorax well 

 rounded. Winy-cases 5 nun., reaching to beginning of sixth 

 abdominal segment. Leys with a very few fine hairs on tibite. 

 Abdomen o\-al, well rounded above; underside slightly convex, 

 with a longitudinal depi'ession along each sifle. No dorsal spines. 

 Lateral spines as follows — 6, a very tiny spine on each side; 7, a 

 fairly large and conspicuous curved spine; 8-9, still larger curved 

 spines, quite 0*5 mm. long; 9 with anal border hollowed to enclose 

 10, which is very short. Appendages .■ superior short, broadly 

 triangular; two lateral of same length but narrow and rather 

 pointed; involucra of imaginal appendages somewhat shorter, 

 lying between lateral and superior appendages. C o I o u r - 

 Pattern: this varies a great deal, both in intensity and detail, 

 according to the locality, and also in individual specimens. An 

 average nymph may be described as liaving a dark brown abdo- 

 men, beautifully mottled all over with lighter bi'«)wn; the head, 

 thorax, legs, and wing-cases Ijeing light brown, with dark brown 

 markings. The most conspicuous of these are : on the head, a 

 dark transverse band between the eyes; on the legs, sliort patches 

 of dark shading, three or f(jur on femora and tibiie, two or three 

 on tarsi; on the wing-cases a dark basal patch, a l)lafk slanting 

 line on the nodus, followed by a large dark patch. On the 



