714 ON THE GENUS PETi'LAIiA, 



sublateral stripe, parallel to the former and of the same colour, 

 but not so large or distinct. Underside covered with grey hairs. 

 Ze^5 strong and thick, with very small stiff hairs or spines; black, 

 except coxae, which are pale brownish. Abdomen: fairly 

 thick at base, then tapering slightly to 4, 4 to end cylindrical. 

 Colour: 1, blackish, grey hairs on sides, a touch of yellow on 

 each side near 2; 2, spurs distinct, but not very large and 

 projecting very little; dark brown, a dorsal stripe of dull orange 

 yellow and on each side a broad patch of yellow; a touch of 

 yellow on spurs : 3-4, basal half dark brown, anal half almost 

 black, dorsal stripe as in 2, but narrowing ; on either side 

 an irregular stripe of orange-yellow, broken by the transverse 

 central carina which is pale brown, and by the sutures, which 

 are black and rather broad; these stripes broaden out anally, 

 forming narrow transverse bands of orange-yellow, the two 

 portions just meeting on the dorsum: 5-7, nearly black above, 

 the dorsal stripe still present, but very narrow, the lateral stripes 

 very irregular, the anal band exceedingly narrow, the two 

 portions not meeting on the dorsum, transverse central carina 

 black; 8, black above, an irregular patch of orange-yellow on 

 each side, broadening anally into a tine transverse line, the two 

 portions just meeting on ihe dorsum in a small orange-yellow 

 spot; 9, orange-yellow, an irregular transverse narrow basal 

 black band, projecting slightly on each side into a small round 

 black spot; 10, same size as 9, black, bordered anally by a trans- 

 verse orange-yellow band. Underside black, strongly powdered 

 with grey. Viewed broadly, the abdomen ma}^ be said to possess 

 a narrow dorsal stripe, tapering, from 2 to 7, and a very irregular 

 lateral stripe on each side, broken by the carinae and sutures. 

 Appendages most remarkable. Superior large and broad, 

 laminate, curved, somewhat rudder-shaped, length about 6 mm., 

 bases strong and thick, separated; aljout midway on the inner 

 margin is a projecting portion forming a right angle; colour, 

 inner basal half pale orange-brown, semi-transparent, outer and 

 upper half very dark brown; edges and bases black. Inferior 

 about 2-5 mm. long by 4*3 mm. wide at tips; acutely pointed on 



