294 THE entomologist's record. 



belonging to the genus to which he has assigned the name fjiffia, and of 

 which there are at least two species, lapiitcUa and fhrliatiltdla (ponionac). 

 Of these I obtained living cases of the former at Cannes and at 

 Brione near Locarno, and of the latter at Bignasco, in the Val Maggia, 

 as well as empty cases at Cannes and elsewhere, though empty cases 

 must always be somewhat doubtful material. I was also indebted to 

 Mr. Tutt for L. laiiiddla, sent me from Guernsey by j\Ir. Luff, and L. 

 fcrchaultdla, from Broxbourne, by Mr. Bacot. Unfortunately, leaving 

 liome for holiday, I had to hand over this material to Mr. Bacot, and 

 so missed seeing the creatures on emergence ; I say unfortunately from 

 my own personal point of view, for j\Ir. Bacot certainly made more of 

 the material than I could have done. He has now handed me cases 

 and emerged moths, and there arises from their examination one or 

 two points for consideration. Besides the examples had under ex- 

 amination as larvie, Mr. Bacot also sends me specimens of ferchaid- 

 tdla from cases collected bv Mr. Fletcher, by Mr. ^Yhittle, and by Mr. 

 Dadd. 



The differences between laiiiddla iind ferchaultdla, up to the imago 

 stage, are very trifling, except the notable one of size, lapidella being- 

 much larger. 



In the imago fcrchaultdla has only females (parthenogenetic), and 

 here we find a notable circumstance, that fcrchaidtdla from different 

 localities presents structural differences. A more careful examination 

 of a larger series may diminish the absoluteness of these differences, as 

 I found to be the case in differences in the sizes and forms of scales, 

 which I had at first thought to be distinctive of some of these races, 

 but it may also accentuate them. All the forms agree fairly well in the 

 forms and sizes of the chitinous plates of the segments, and in having 

 twelve antennal joints. The great difference is in the number of the 

 tarsal joints. 



Those collected by Mr. Fletcher and Mr. Bacot have three tarsal 

 joints to the 1st legs, but four to the other two pairs. These joints 

 are all well-developed and functional, the 1st and 4th long, and two 

 intermediate ones short. 



In my specimens from Bignasco the third tarsal joint of the two 

 hinder legs is smaller, very small or evanescent ventrally, and I do 

 not think it is functional in any specimen examined, but is ankylosed 

 to and forms part of the fourth, now become third joint. Sometimes 

 it is difficult to detect it. 



In Mr. Whittle's specimens there is no sign of the third joint, 

 there being but three joints to all tarsi, the first and third long, and one 

 short intermediate. 



In one specimen from ]\Ir. Dadd, very shrivelled and diflicult to 

 examine, there were apparently only three joints to all tarsi, and even 

 the antenna^ appeared to have fcAver joints, but it would be difficult 

 to assert positively in one such specimen that they had not been 

 broken. 



In the specimens collected by Fletcher, Bacot, and Badd, the scales 

 are broad (as in all Luffiads), but not very broad, Avhilst in those col- 

 lected by Whittle they are very broad. I at first classed my Bignasco 

 specimens in this matter with Bacot's, but 1 afterwards found a speci- 

 men among them with very broad scales. The scales are always 

 broadest dorsally and on the anterior abdoniinal segments. In those 



