6 THE ENTOMOLOGIST. 



Coloration : Malva darker ; and the white markings, therefore, shown 

 up in stronger reHef on the ground colour; in malvoidcs, the 

 general tint rather brownish than actually black ; the white 

 spots contrasting less vigorously. (Examples must be quite 

 fresh to demonstrate this difference.) This is due to the hairs 

 which cover the wings being somewhat lighter and whiter in 

 malvoidcs, which is also more abundantly provided with them 

 than vialvce. 



Fore wdngs, upper side : No palpable difference in the distribution 

 scheme of the white spots forming the irregular Y in the middle 

 of the wing ; but the row of small ante-marginal spots, very 

 clearly defined as a rule in malvcB, absent in malvoidcs, or reduced 

 to a few atoms ; instead of the spots traces of feeble brownish, 

 lighter than the ground colour. 



Hind wings, upper side : Differences even less constant. Usually 

 the median band of white spots with denticulations turned out- 

 wards is more extended in malvcB. 



Fore wings, under side : In malvoides the costa, and a thin "piping" 

 the length of the outer margin immediately inside the fringe, 

 ochreous yale yellow ; in malva more or less dirty white. 



Hind wings, under side : Normal colour in malva greyish, in onal- 

 voides rather yellowish ; median band of spots more often carried 

 through unbroken from one margin to the other in malvoides ; in 

 malvcd almost invariably broken at the back of the large spot. 

 In very fresh examples pearly reflections of the white spots more 

 pronounced in malvoides. Inner margin in malvce usually 

 greyish, or blackish normally ; in malvoides whitish or yellowish. 

 Not constant. Black spot in line with the anal angle more 

 obvious in malvoides. Tiny black spot in white spot just beyond 

 anal angle fails or almost disappears less frequently in malvoides 

 than in malvcB. 



Nervures : Usual colouring hind wings, either yellow or reddish 

 yellow in malvoides ; whitish, or of a less pronounced yellow, in 

 malvcB. 



Antennae : The club in malvoides yellow or tawny, and almost con- 

 stant ■■'- ; in malvcz brown or black almost without exception. 



Palpi : In malvoides, seen from below, sometimes white, more often 

 pale grey ; in malva sometimes pure black, and more often grey 

 of a deeper shade than in malvoides. Seen from above the bunch 

 of black hairs in the middle in malvoides usually contains several 

 white or grey hairs ; in malvce they are black or blackish. Less 

 constant than the differences of the antennae. 



Joints of antennas : Less on the average in malvoides than in malvce, 

 on the whole ; but not constant, some examples even showing a 

 different number on one antenna to the other ! 



Examination of ordinary and androconeal scales inconclusive. 



Dr. Reverdin concludes with a number of observations from 

 entomologists in the various countries where it occurs tending 



* E. Audre, ' Lepid. de Saone-et-Loire ' (Macon, 1902), under alveus 

 var'. fritillum, Hb., writes, quoting Frey, "Under side of the clubs of the 

 antennEe rusty-red." 



