Mr. Distant' s Collection of African Locustidx. 237 



scattered whitish spots elsewhere ; wings subhyaline, pale blue, with 

 the apical third brown, the colour diminishing towards the anal 

 angle. 



Hah. Delagoa Bay (Jimocl). 



45g. Acrotyhts gillctta^, sp. n. 



Long. Corp. 18 millim. ; exp. al. 33 millim, 



Tegmina narrow, longer than the wings, rosy grey towards the 

 base, subhyaline on the costa beyond the convexity, and over the outer 

 half of the tegmina, except along" the anal area. A row of seven black 

 costal spots, the first five large, the 3rd and 4th not quite touching 

 the costa, the 6th and 7th much smaller, and annular ; there is also 

 a series of smaller brown spots on the inner margin, but receding 

 from it towards the base, and there are also numerous blackish and 

 brown dots towards the base and middle of the tegmina. Wings 

 clear hyaline, the nervures blackish, with some of the intermediate 

 longitudinal nervures palo ; the pale nervure marking the uppermost 

 fold is ornamented towards its extremity with a few brown spots on 

 each side. Pronotum, antennaj, and thorax rosy grey, cheeks whitish, 

 the principal suture on the pronotum is marked with four yellow 

 callosities, two on the back, and two on the sides, a black spot at the 

 base of the wings ; otherwise the intercalary space is rosy grey in the 

 middle, and .bluish-grey on the sides ; abdomen testaceous, with two 

 large and transverse bluish sjDots at the base, bordered above with 

 black. Two front legs rosy grey, indistinctly spotted with brown • 

 hind femora whitish on the outside, and yellowish-white on the 

 inside, irregularly streaked and spotted with brown ; hind tibite pale 

 blue in the middle, yellowish towards the base, and reddish towards 

 the extremity ; tibial spines black, seven in the outer row ; terminal 

 spines very long, reddish, tipped with black. 



Hob. Nyasaland : Fort Johnston {Rcndall) ; SOMALI- 

 LAND {Miss F. Gillett). 



Closely allied to A. quadrimacnlatus, De Haan, which 

 Stcll and Saussure place as a synonym of A. deustus, Thun- 

 berg. Apart from the identification of Tlmnberg's insect 

 being very doubtful, A. qiiadrimaculatus and gilkttie have 

 no intercalated nervures on the forewings, and therefore 

 belong to a different section to that in which Stiil and 

 Saussure have placed i\\Q\x A. deustus. A. quadriviaculattis 

 and A.gillettm seem to form a transition between Acrotylus 

 and Sphingonotus. 



