64 LOCUST. 



tubercles red. The head is sparsely punctured, and has 

 four raised longitudinal lines in front ; the two central 

 lines are close together and very prominent between the 

 antennae, but diverge and curve outwardly towards the 

 eyes on the front of the forehead ; the vertex is convex, 

 and has a slight raised longitudinal line in the centre ; 

 the antennae aie composed of about twenty joints and 

 taper slightly towards the apex, the basal joint is thick 

 and pale yellow, the second is very short and reddish 

 yellow or pitchy, the other joints are deep black and 

 finely punctured. The thorax has large tubercles on 

 the upper part in front, and some smaller ones behind 

 and at the sides ; there is a raised longitudinal line in 

 the centre, interrupted by four transverse impressed 

 lines ; the basal part is punctured or rugose, and is 

 considerably raised and produced behind. The base of 

 the wings and the intervening part of the body is dark 

 brown or black. The abdomen is yellow, with the base 

 of each segment broadly margined with black at the 

 sides and above. The fore wings vary in different 

 individuals from indigo-blue or purple to pale greenish 

 yellow ; the short transverse nervules are spotted with 

 yellow. The hind wings are of a similar colour to the 

 fore wings in front, and have numerous small dark 

 purple or blackish spots ; the hinder part varies in 

 different individuals from pale pinkish yellow to bright 

 vermilion, and the spots are smaller and less numerous 

 than in front. The legs vary from yellow to vermilion, 

 with the knees, the tips of the spines on the tibiae, and 

 the tarsi, more or less purple or pitchy black. The 

 underside of the body is yellow. The expanse of the 

 wings varies from 90 to 140 millim. (85- 5| in.). 



This fine locust is very variable both as regards colour 

 and size ; the highly coloured individuals in which the 

 vermilion predominates are exceedingly gorgeous insects. 

 It occurs as far as the Eiver Congo in West Africa, and 

 is said to be also found in Madagascar. 0. E. J. 



Unfortunately the few lines of observation sent from 



