1899.J ritOM BRITISH EAST AFRICA. 421 



15. AcRJEA ASTRiGEEA, sp. 11. (Plate XXV. fig. 5.) 



(S . Allied to A. acara var. barberi, but having the size and 

 general aspect of the largest and brightest examples ol: typical 

 A. acara ; on the primaries the spots ot the postmedian series are 

 small and arranged in a regular line (as in A. acrita) ; the bar 

 crossing the end of the cell has a small spot below it, and exactly 

 resembles that in A. anemosa; the looped submarginal line of 

 A. acara is only represented by two dusky dots beyond the lowest 

 spot of the postmedian series ; the secondaries have no white 

 patch and no black spot on the discocellulars ; the black outer 

 border is as wide as in A. acara, but is more sharply defined and 

 traversed by a series of pure white dots ; the fringe also is pure 

 white between the veins : on the under surface the differences 

 between this species and A. acara are of the same kind. 



(S . On the road from Machako's to Naugia, 4800 feet, ISth 

 September. 1898. 



Although this is a beautiful insect in its fresh rosy colouring, I 

 could wish to have seen more specimens before describing it; 

 because, while it is perfectly distinct and well-marked, yet the 

 possession of a female example would have shown whether it 

 should be placed nearer to A. acura or A. anemosa. It appears to 

 come nearer to the former. 



16. AcR.EA CERASA Hewits. 

 Kikuyu, 6400 feet, 17th July, 1898. 



JjYCJE'SJDJE. 



17. POLVOMMATTJS BATICUS Linu. 



2 , Machako's, 10th July, 1898. 

 " Emerald-green ova." (E. 0.) 



18. CaTOCHRYSOPS PERPULCHRAHolland( = PKCULIARIsRogenh.). 



$ , Machako's, 3rd July, 1898. 



19. Tarucus plinius Fabr. 



$ , Machako's, 26th June, 1898. 

 " Bright grass-green ova." (K. C) 



20. ZizEEA GAiKA Trimen. 



cJ 6 , Machako's, 28th May and 19th June, 1898. 

 "Very plentiful : has to be almost driven off the ground — flies 

 so low." i-R. C.) 



21. Castalius geegorii Butler. 



cJ d , ? $ , Machako's, 13th and 24th June, 1898. 

 " By no means common ; three seen in a day's walk." (B. 0.) 

 It is satisfactory to find that this species, of which we previously 

 possessed only the type, is quite constant. 

 Pboc. Zool. Soc— 1899, No. XXVIII. 28 



