ARCTIID.E. FUMKA. 81 



" Again in June last I procured another considerable supply of both larva? and 

 pupae, some only half the size of the others, from the largest of which I 

 obtained four males and two females, in the beginning of July ; the larvae on 

 the smaller cases being still alive (Nov. 24.) ; from which I conceive that 

 they remain at least two seasons, if not more, before they attain perfection * : 

 which opinion is strengthened by the fact of my taking the young larvaet on 

 17th July, 1827, under three-fourths of a line in lenglh, including the case, 

 which are now but four lines long, and which I fed at first on the leaves of 

 the sallow, the cuticle of which they devoured, and with the downy portion 

 they fonned their cases ; during the winter they remained fixed to the upper 

 part of the inverted glass in which they were placed (having made the sides 

 easy of ascent, by covering them with a fine silken web) ; and in March they 

 began to stir, when I supplied them with the buds of white-thorn and after- 

 wards with sallow ; they gradually increased the size of their cases, and added 

 to them fine saw-dust and pieces of leaves ; and after a few weeks they again 

 became immovably fixed, and from each of them the Chalcideous insects 

 alluded to in the note were produced ; and their extremely slow growth not 

 only indicates their anomalous longevity, but satisfactorily shows why they 

 are so obnoxious to tiie attacks of parasites. The females never leave their 

 cases ; and from previous ignorance of that fact, I am not confident whether 

 any of the larvae taken in June 1827 produced any of that sex." — Mr. Ingpen. 



How the union of the sexes takes place it is difncult to imagine, as the female 

 does not leave her birthplace, and the extraordinary smallness of the latter 

 sex is very remarkable. 



For the above interesting facts I am indebted to my friend Mr. 

 Ingpen, who has also taken the insects at Highgate : specimens 

 were also taken, many years previously, by Messrs. Hatchett and 

 Bydder, I believe in or near the same locality. 



Genus LXXVI. — Fumea, Hawortlt. 



Palpi and maxillce wanting, their place occupied by a tuft of elongate hairs. 

 Antennw of the male elongate, bipectinated, the pectinations subclavate, 

 ciUated, and straight; of the female very short, simple, the two basal joints 

 largest ; head pilose anteriorly : thorax slightly hairy, and generally glossy : 

 abdomen of the male pilose, with a tuft at the apex, of the female more robust, 

 with a woolly mass at the tip : wings incumbent, of the male diaphanous, 

 deeply ciliated, pilose, of the female wanting : legs rather stout, the posterior 



* Thereby approaching in the duration of their lives to some of the Hepialids. 

 —J. F. S. 



t " Which larvie, although taken so young, produced a great abundance of 

 Chalcideous parasites in June last ; the eggs of which must either have been 

 deposited in the young larvse upon leaving the egg, or in the latter, if not in- 

 troduced upon the leaves upon which they were nourished.' — Mr. Ingpen. 

 Havstfaa.ata. Vol. il. 1st Fkbriary, ]329. g 



