716 ON THE GENUS PETULARA, 



14 mm., covering 8 cellules. Memhranule very small aud 

 narrow, dirty flesh-coloured. Nodal Indicator |21 12-14 



Head: Eyes da^v^i brown sepai'ated by occipital j 16-17 12-14 

 ridge, 3-5 mm. long, black. Vertex small, black; ocelli close 

 together, rather large, brown; antennse black. Front black with 

 a broad transverse yellow band above, slightly narrowed in the 

 median cleft; clypeus black; lahrum j^ellow bordered with black, 

 the black colour projecting slightly from above into a small 

 central spine; ge^ice yellow; labium pale dirty yellowish-grey; 

 mouth edged with dark brown. Thorax: Prothorax fairly 

 bioad, YQvy dark brown, paler on the ridge behind. Meso- and 

 metathorax rich dark brown, a sub triangular dorsal area of dull 

 yellowish with its base next the prothorax, enclosing the dark 

 brown dorsal ridge, which rises into a sharp spine near its centre. 

 On either side a broad straight lateral band, and a sublateral 

 band very low down, both dirty flesh-colour; the former band 

 crossing the notum. Legs large and strong, jet black. Abdomen 

 very long, slender, subcylindrical; 1-2 thickened, 3-6 tapering 

 slightly, 7-10 enlarging slightly. Colour black or very dark 

 brown, dorsal surface of 1 and base of 2 with pale grey hairs; 1, 

 a yellow ])atch on each side; 2, a fine yellow dorsal line, a trans- 

 verse anal band, enlarging on each side into a large yellow lateral 

 patch; separated from this patch there is also a large basal yellow 

 patch; spurs partially formed, with a deep depression behind 

 them, but with little elevation; colour yellow, brown at the bases: 

 3, a narrow transverse yellow basal band and a similar anal band, 

 joined on each side by an irregular lateral band of yellow, crossed 

 by the slanting black line of the supplementary carina; 4-7 with 

 narrow tiansverse basal and anal yellow bands, 4 sometimes 

 showing the beginnings of a lateral band on the sides; 8-9 with 

 narrow transverse anal yellow bands; 10 touched anally with 

 yellow; 10 rather flat above, and both 9 and 10 short and of 

 about equal length. Appendages very remarkable. Superior 

 broad, laminate, somewhat rudder-shaped, 8'5mm. long by 7 mm, 

 wide; wide apart at bases, and carrying on the inner margin a 

 portion forming an obtuse-angled projection. Colour very dark 



