COLEOPHORA. 223 
much larger than it appears to have any occasion for, which is to 
allow for the growth of the larva; a new-made case is extremely 
transparent, but the larva soon sets to work to line it with silk, 
being aware that it would stand small chance of escaping the 
nomen and ubiquitous Jchnewmons if it lived in a glass 
1ouse. 
37. viminetella (v. Heyden), Zell. L. E. iv. 398. Anm, i. (1849) ; 
Sta.—lusciniepennella, Treit.? Dup.? Alis anticis angustulis ochreo- 
griseis, apicem versus paullulum saturatioribus; antennis albis, fusco- 
annulatis, articulo basali griseo-ochreo, non penicillato. Exp. al. 6 lin, 
Head, face, and palpi greyish-ochreous. Antenne white, annulated 
with fuscous; the basal joint greyish-ochreous, not tufted. Anterior 
wines rather narrow (very variable in colour), generally greyish-ochre- 
ous, slightly darker towards the apex. Posterior wings grey, with 
paler cilia. 
Not uncommon among sallows and osiers in June and July. 
The larva feeds in autumn and spring on the leaves of those 
plants; its case is very peculiar, being made of pieces of leaf 
added at different times; it is not uniform in colour or size, 
being generally darkest towards the top, and of course broadest 
towards the bottom. The perfect insect can sometimes hardly be 
distinguished from the allied species; a fact which ought to make 
us extremely cautious in concluding that because we can see no 
distinction between species, they are therefore identical ; not till 
the entire habits and history of the different specimens are known 
can we pronounce decidedly that they are not distinct. 
38. olivaceella, n. sp. lis anticis olivaceo-griseis, dorsum ver- 
sus saturatioribus; antennis albis fusco-annulatis, articulo basali gra- 
ciliore olivaceo-griseo, non penicillato, Exp. al. 6 lin. 
Head, face, and palpi olive-grey. Antenne white, annulated with 
fuscous ; the annulations hardly perceptible before the apex; the basal 
joint rather slender, olive-grey, not tufted. Anterior wings olive-grey, 
inclining to dark grey along the inner margin; cilia pale olive-grey. 
Posterior wings dark grey, with paler cilia. 
Two specimens taken by Mr. Allis, of which one is in my own 
collection. 
39. solitariella, Zell. L. B. iv. 397 (1849); Sta.; Dougl. Ent. 
Trans. ii. n. s. 81. pl. xi. f. 8. Alis anticis axgustulis, ochreo-flavis, ni- 
tidis ; ciliis apicis ochreo-flavis, anguli analis saturate griseis ; antennis 
niveis, nigro-annulatis, articulo basali ochreo-flavo non penicillato. 
Exp. al. 54 lin. 
Head, face, and palpi ochreous-yellow. Antenne snowy-white, 
annulated with black; the basal joint ochreous-yellow, not tufted. 
Anterior wings rather narrow, shining, ochreous-yellow ; the cilia at the 
