554 Mr. Guy A. K. Marshall's 



greater extent, the fuscous suffusion in the hindwings 

 almost entirely veiling the ground-colour. The colour of 

 the forewings also shows a strong tendency, as in A. 

 induna, to become of a pale creamy tint. Such speci- 

 mens often exhibit more or less white clouding in the 

 hindwings. Caldarena is essentially a tropical species, 

 only just entering the extra-tropical area, whereas stenobea 

 is not found in the tropics at all, but occurs as far south 

 as the Eastern districts of the Cape Colony. The only 

 point at which its range overlaps that of caldarena 

 appears to be in the region of the Marico and Upper 

 Limpopo Rivers. 



I have never met with this insect in life, but from the 

 description I have not the slightest doubt that A. lygus, 

 Druce (= stenohea, var. A of Trimen) is merely the dry 

 season form of stenohea. The absurdity of amalgamating 

 stenohea with caldarena is therefore manifest. With re- 

 gard to douhledayi there is no question that it is quite 

 distinct from caldarena (= diraea), for apart from the 

 fact that they both occur at all seasons, their geo- 

 graphical ranges do not coincide at all — at least so far as 

 ray experience goes. Douhledayi does not occur in 

 Mashunaland proper, being there represented by A. axina, 

 Westw., and throughout South-East Africa it seems to 

 be confined more or less to the coast belt. While travell- 

 ing from Salisbury to Beira I observed that after leaving 

 Umtali caldarena became gradually scarcer, and after 

 crossing the KevDii River it disappeared altogether. A. 

 douhledayi I first met with in the Manini Valley (some- 

 what west of the Revne River), and it was plentiful from 

 there right down to the coast. 



(5.) ^4. 'pudorina, Staud. A. cheerihula, Oberth. 

 I am unacquainted with either of these species ; but 1 

 notice that Mr. Butler considers A. acrita, Dew., to be 

 merely an intermediate form between the two. The 

 latter butterfly I have onl}' met with on a few occasions 

 in Mashunaland throughout the dry season. Had Mr. 

 Butler's theory been correct, I ought to have taken not 

 acrita, but jj-udorina. Again, Mr. F. C. Selous, collecting 

 in Manica from January to June, through the height of 

 the rains, took a long series of acrita ; how is it he never 

 came across the so-called wet season form chperihula ? 

 These specimens have been referred to by Trimen 

 (P. Z. S., Jan. 16, 1894), and he has pointed out that they 



